VIATEL INC
S-3, 1999-02-12
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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                           As filed with the Securities and Exchange Commission
                                                           on February 12, 1999
                                                          Registration No. 333-

================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ---------------------

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                         ------------------------------
                                  VIATEL, INC.
             (Exact Name of Registrant as Specified in its Charter)
          DELAWARE                                                 13-3787366
(State or Other Jurisdiction                                    (I.R.S. Employer
             of                 685 THIRD AVENUE                 Identification
      Incorporation or       NEW YORK, NEW YORK 10017                Number)
        Organization)            (212) 350-9200
                   (Address, Including Zip Code, and Telephone
                  Number, Including Area Code, of Registrant's
                          Principal Executive Offices)
                         ------------------------------
                            SHELDON M. GOLDMAN, ESQ.
                             SENIOR VICE PRESIDENT,
                      BUSINESS AFFAIRS AND GENERAL COUNSEL
                                  VIATEL, INC.
                                685 THIRD AVENUE
                            NEW YORK, NEW YORK 10017
                                (212) 350-9200
                     (Name, Address, Including Zip Code, and
                    Telephone Number, Including Area Code, of
                               Agent For Service)

                        COPIES OF ALL COMMUNICATIONS TO:
                             JAMES P. PRENETTA, ESQ.
                            KELLEY DRYE & WARREN LLP
                                 101 PARK AVENUE
                            NEW YORK, NEW YORK 10178
                                (212) 808-7800


     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  From time
     to time following the effectiveness of this registration statement.

     If the only  securities  being  registered  on this Form are being  offered
     pursuant  to  dividend or interest  reinvestment  plans,  please  check the
     following box. |_|


     If any of the securities being registered on this Form are to be offered on
     a delayed or continuous basis pursuant to Rule 415 under the Securities Act
     of 1933, other than securities  offered only in connection with dividend or
     interest reinvestment plans, check the following box. |X|

     If this Form is filed to  register  additional  securities  for an offering
     pursuant  to Rule  462(b)  under  the  Securities  Act,  please  check  the
     following box and list the Securities Act registration  statement number of
     the earlier effective registration statement for the same offering. |_|

     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(c)
     under the  Securities  Act, check the following box and list the Securities
     Act  registration  statement number of the earlier  effective  registration
     statement for the same offering. |_|

     If delivery of the prospectus is expected to be made pursuant to Rule 434,
     please check the following box.    |_|
                         ------------------------------
<PAGE>
                         CALCULATION OF REGISTRATION FEE

<TABLE>
<S>                         <C>                       <C>                       <C>                        <C>                


- --------------------------- ------------------------- ------------------------- -------------------------- -------------------------
  Title of Shares to be     Amount to be Registered       Proposed Maximum          Proposed Maximum        Amount of Registration
        Registered                                      Aggregate Price Per        Aggregate Offering                Fee
                                                               Share                    Price(1)
- --------------------------- ------------------------- ------------------------- -------------------------- -------------------------
- --------------------------- ------------------------- ------------------------- -------------------------- -------------------------
Common Stock, par value         6,824,249 Shares              $17.8125               $121,556,935.30              $35,859.30
$.01 per share
- --------------------------- ------------------------- ------------------------- -------------------------- -------------------------

</TABLE>

(1)  Estimated  solely for the purpose of calculating  the  registration  fee in
     accordance  with Rule 457(c) under the  Securities Act of 1933, as amended.
     The Proposed Maximum Aggregate Price Per Share is estimated on the basis of
     the average of the high and low trading  prices for Viatel,  Inc.'s  Common
     Stock on February 8, 1999, as reported by the Nasdaq National Market.
                         ------------------------------

     THE REGISTRANT  HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER  AMENDMENT  WHICH  SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE  SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE  ON SUCH  DATE  AS THE  SECURITIES  AND  EXCHANGE  COMMISSION,  ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.
================================================================================


<PAGE>


The  information  in this  Preliminary  Prospectus  is not  complete  and may be
changed. We may not sell these securities until the registration statement filed
with the  Securities  and Exchange  Commission  is effective.  This  Preliminary
Prospectus  is not an offer  to sell  nor  does it seek an  offer  to buy  these
securities in any jurisdiction where the offer or sale is not permitted.


SUBJECT TO COMPLETION, DATED FEBRUARY 12, 1999




                               6,824,249 SHARES

                                 VIATEL, INC.


                         COMMON STOCK, $.01 PAR VALUE

         This Prospectus may be used by us for the issuance,  from time to time,
of up to  6,824,249  shares of our  common  stock,  upon the  conversion  of our
outstanding  Subordinated  Debentures or shares of Series A Preferred  Stock. We
will not receive any  proceeds  from the  issuance of these shares of our common
stock.  The expenses  incurred in registering the shares of common stock covered
by this  Prospectus,  including  legal and accounting  fees, will be paid by us.
None of the shares of common stock covered hereby have been registered  prior to
the filing of the registration statement of which this Prospectus is a part.

          Our corporate  offices are located at 685 Third Avenue,  New York, New
York 10017 and our telephone number is (212) 350-9200.

         Our common  stock is traded on the  Nasdaq  National  Market  under the
symbol  "VYTL." On February  10,  1999,  our common  stock  closed at $17.00 per
share.
                         ------------------------------

         SEE "RISK  FACTORS"  BEGINNING ON PAGE 2 TO READ ABOUT CERTAIN  FACTORS
YOU SHOULD CONSIDER BEFORE CONVERTING YOUR SUBORDINATED  DEBENTURES OR SHARES OF
SERIES A PREFERRED STOCK INTO SHARES OF OUR COMMON STOCK.

                         ------------------------------

         NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS  IS TRUTHFUL OR  COMPLETE.  ANY  REPRESENTATION  TO THE CONTRARY IS A
CRIMINAL OFFENSE.










                 The date of this Prospectus is February   , 1999.





<PAGE>


                                  RISK FACTORS

         THIS PROSPECTUS INCLUDES AND INCORPORATES  "FORWARD LOOKING STATEMENTS"
WITHIN THE MEANING OF SECTION 27A OF THE  SECURITIES ACT OF 1933 AND SECTION 21E
OF THE  SECURITIES  EXCHANGE  ACT OF 1934.  ALTHOUGH WE BELIEVE  THAT OUR PLANS,
INTENTIONS AND  EXPECTATIONS  REFLECTED IN OR SUGGESTED BY SUCH  FORWARD-LOOKING
STATEMENTS ARE REASONABLE,  WE CAN GIVE NO ASSURANCE THAT SUCH PLANS, INTENTIONS
OR  EXPECTATIONS  WILL BE  ACHIEVED.  IMPORTANT  FACTORS THAT COULD CAUSE ACTUAL
RESULTS TO DIFFER MATERIALLY FROM THE FORWARD-LOOKING STATEMENTS WE MAKE IN THIS
PROSPECTUS ARE SET FORTH BELOW. ALL FORWARD-LOOKING  STATEMENTS  ATTRIBUTABLE TO
THE COMPANY OR PERSONS  ACTING ON OUR BEHALF ARE  EXPRESSLY  QUALIFIED  IN THEIR
ENTIRETY BY THE FOLLOWING CAUTIONARY STATEMENTS.

SUBSTANTIAL LEVERAGE

         We  have  now  and  will  continue  to  have a  significant  amount  of
indebtedness.  Our substantial indebtedness could have important consequences to
you. For example, it could:

               -  limit our ability to obtain additional financing in the future
                  for working capital,  capital  expenditures,  acquisitions and
                  general corporate purposes;

               -  require us to dedicate a substantial portion of  our cash flow
                  from  operations  to  payments  on our  indebtedness,  thereby
                  reducing  the  funds  available  to  us  for  other  purposes,
                  including working capital, capital expenditures,  acquisitions
                  and general corporate purposes;

               -  make us more  vulnerable to economic  downturns,  limiting our
                  ability  to  withstand  competitive  pressures  and reduce our
                  flexibility  in responding  to changing  business and economic
                  conditions;

               -  limit our flexibility in planning for, or reacting to, changes
                  in our business and the industry in which we operate;

               -  place  us  at  a  competitive  disadvantage  compared  to  our
                  competitors that have less debt; and

               -  limit,   along  with  the  financial  and  other   restrictive
                  covenants,  our  ability  to  borrow  additional  funds.  And,
                  failing to comply  with  those  covenants  could  result in an
                  event of default which,  if not cured or waived,  could have a
                  material adverse effect on us.


ABILITY TO SERVICE DEBT

         Our ability to make payments on and to refinance our indebtedness  will
depend on our ability to generate cash in the future. This, to a certain extent,
is subject to general economic, financial, competitive,  legislative, regulatory
and other factors that are beyond our control.

         We cannot assure you that our business will  generate  sufficient  cash
flow  from  operations  to meet our debt  service  requirements.  We may need to
refinance  all or a portion of our  indebtedness.  Based on our current level of
operation,  we anticipate that cash flows from operations may be insufficient to
repay  our  indebtedness  at  scheduled  maturity  and that  some or all of such
indebtedness  may need to be  refinanced.  Our  ability to do so will depend on,
among other things, our financial condition at the time, the restrictions in the
agreements  governing  our  indebtedness  and other  factors,  including  market
conditions.  If such  refinancing  were not possible or if additional  financing
were not available,  we could be forced to dispose of assets under circumstances
that might not be favorable to realizing the highest price for such assets or to
default on our obligations with respect to our indebtedness.


                                       2
<PAGE>


RESTRICTIVE COVENANTS

         The  indentures  pursuant  to  which  our  long-term  debt  was  issued
restrict, and in some cases significantly limit or prohibit, among other things,
our  ability  and  the  ability  of  our   subsidiaries   to  incur   additional
indebtedness,  make  prepayments of certain  indebtedness,  pay dividends,  make
investments,  engage in transactions  with  stockholders  and affiliates,  issue
capital   stock,   create   liens,   sell  assets  and  engage  in  mergers  and
consolidations.  However,  the  limitations  set  forth in such  indentures  are
subject to a number of important  qualifications and exceptions.  In particular,
while the indentures restrict our ability to incur additional indebtedness, they
permit us and our subsidiaries to, among other things, incur an unlimited amount
of secured indebtedness to finance  telecommunications  assets and build-out. If
new indebtedness is added to our and our subsidiaries'  current debt levels, the
related risks that we and they now face could intensify.


UNCERTAINTIES ASSOCIATED WITH LIMITED OPERATING HISTORY

         We commenced  operations in 1991, and,  therefore,  have only a limited
operating history upon which you can evaluate our business.  You should evaluate
our  chances  of  financial  and  operational  success  in light  of the  risks,
uncertainties,  expenses,  delays and  difficulties  frequently  encountered  by
companies in their early stage of development.  Furthermore,  the liberalization
of Western  European  telecommunications  regulation  since  January 1, 1998 has
dramatically changed the  telecommunications  market in a number of the European
Union member states in which we operate.


SUBSTANTIAL NET LOSSES AND NEGATIVE CASH FLOW FROM OPERATIONS

         We have  experienced net losses and negative  earnings before interest,
taxes, depreciation and amortization since we commenced operations. In addition,
we have also  experienced  significant  increases  in capital  expenditures  and
expenses associated with the development and expansion of our network. We expect
to incur operating and net losses, and negative earnings before interest, taxes,
depreciation and  amortization and negative cash flow from operating  activities
until at least the year 2000.  However,  our negative  earnings before interest,
taxes,  depreciation  and  amortization  and  negative  cash flows are likely to
continue  beyond the year 2000 if we extend  expansion  plans,  if retail prices
decline faster than anticipated, interconnection rates and wholesale prices paid
by us do not  decline as quickly as  anticipated  or because of any of the other
risks described herein.  Accordingly,  we cannot assure you that we will achieve
or sustain profitability or positive cash flows from operating activities in the
future. If we cannot achieve profitability or positive cash flows from operating
activities,  we may be unable to meet  working  capital or future  debt  service
requirements  which  would  have a  material  adverse  effect  on our  business,
financial  condition  and  results of  operations.  See "-  Substantial  Capital
Requirements" and "- Variability of Operating Results."

RISKS ASSOCIATED WITH THE VIATEL NETWORK

          Our  success is  dependent,  in part,  on our  ability to  continue to
expand our network and on our ability to provide seamless technical operation of
our network.  Furthermore,  as we continue to expand our network to increase its
capacity and reach, we will face increasing demands and challenges including (1)
effectively  managing  the  construction  of new  fiber  routes,  obtaining  any
necessary   rights-of-way  and  required  licenses  for  such  construction  and
completing any such  construction on budget and on time, (2) increasing  traffic
volume on our  network  and (3)  selling  indefeasible  rights-of-use  and other
capacity on the network.  If the costs of  construction  projects  significantly
exceed our budget for those  projects,  we may be required to obtain  additional
financing or to abandon or curtail  portions of such  projects.  If we encounter
construction  delays,  we will not be able to route our traffic over these owned
facilities  as soon as we hope,  which  will,  for some  period of time,  have a
detrimental effect on our ability to increase traffic volumes and gross margins.
In addition,  construction  delays  associated with these rings could negatively


                                       3
<PAGE>

affect our  ability to sell  indefeasible  rights-of-use  or  capacity  to other
carriers.  Our  network is subject to  several  risks  which are  outside of our
control,  such as the risk of damage to software  and  hardware  resulting  from
fire, power loss, natural disasters and general transmission  failures caused by
a number of additional  factors.  Any failure of our network or other systems or
hardware that causes  significant  interruptions  to our operations could have a
material  adverse  effect on our  business,  financial  condition and results of
operations.  Our operations  are also  dependent on our ability to  successfully
integrate new and emerging  technologies  and equipment into the network,  which
could increase the risk of system failure and result in further strains upon our
network. We attempt to minimize customer  inconvenience in the event of a system
disruption by routing  traffic to other circuits and switches which may be owned
by other  carriers.  However,  prolonged  or  significant  system  failures,  or
difficulties  for customers in accessing  and  maintaining  connection  with our
network, could seriously damage our reputation and result in customer attrition,
reduced margins and financial losses. Additionally,  any damage to our switching
centers in New York, New York, Somerset, New Jersey or London, England (of which
there are two) could have a material  adverse  effect on our  ability to monitor
and manage the network operations and generate accurate call detail reports.

         The  expansion  and   development   of  our  network  will  entail  the
significant  expenditure of resources in projecting growth in traffic volume and
routing preferences and determining the most cost effective means of growing the
network, for example, through variable or fixed lease arrangements, the purchase
of indefeasible rights-of-use or minimum investment units on digital fiber optic
cables or digital  microwave  equipment,  or the  construction  of  transmission
infrastructure.   Failure  to  project  traffic  volume  and  route  preferences
correctly  or to determine  the optimal  means of  expanding  our network  would
result in less than optimal utilization of our network and could have a material
adverse effect on our business, financial condition and results of operations.

          We are aware that certain long  distance  carriers and  consortia  are
expanding capacity in Europe and believe that other long distance  carriers,  as
well as potential new entrants,  such as alternative carriers,  global consortia
of  telecommunications  operators,  international  carriers,  Internet  backbone
networks,  resellers,  value-added  networks and other  service  providers,  are
considering  the  construction  of new  fiber  optic  and  other  long  distance
transmission  networks.  For  example,  the Ulysses  cable  system  owned by MCI
WorldCom and the Hermes Europe Railtel B.V cable system connect cities that will
be linked by our network. In addition, Level 3 Communications,  British Telecom,
Global  Crossing and KPN/Qwest  have  announced  their plans to construct  fiber
optic  networks in Europe.  As a result,  there has been pricing  pressure  with
respect to sales of indefeasible  rights-of-use  and capacity on our network and
transmission  of calls  between  connected  cities.  Such price  competition  is
expected to continue and further price competition could have a material adverse
effect on our business, financial condition and results of operations. Since the
cost  of the  actual  fiber  is a  relatively  small  portion  of  building  new
transmission lines, persons building such lines are likely to install fiber that
provides  substantially more transmission  capacity than will be needed over the
short or  medium-term.  Further,  recent  technological  advances have shown the
potential to greatly  expand the capacity of existing and new fiber optic cable,
which  will add to  available  supply  and  thereby  create  additional  pricing
pressure.  Demand for  transmission  capacity in the United  States has recently
been  fueled  by  businesses  seeking  data  transmission   capacity.   European
businesses are not currently using data  transmission to the same extent as U.S.
businesses  due to higher costs.  If European  businesses  do not  substantially
increase their demand for data services, our ability to utilize our network will
be adversely affected. In addition, we intend to sell indefeasible rights-of-use
and capacity in our network to other carriers,  which will result in competitors
having  capacity on various routes along our network,  which in turn will result
in pricing  pressures  with respect to traffic  carried along these  routes.  If
industry  capacity  expansion results in capacity that exceeds overall demand in
general or along any of our routes,  severe  additional  pricing  pressure could
develop.


                                       4
<PAGE>

SUBSTANTIAL CAPITAL REQUIREMENTS

          We  currently  have  budgeted  approximately  $530.0  million  for the
construction of transmission infrastructure.  However, we cannot assure you that
actual costs of these  costruction  projects will not  substantially  exceed our
budget for such  projects.  Future  sources of financing may include  additional
public and  private  debt and equity  offerings,  project  financing,  equipment
financings  and the  sale  of  indefeasible  rights-of-use  or  capacity  in our
network.  We cannot assure you that additional  financing  arrangements  will be
available to us on acceptable  terms.  Moreover,  the amount of our  substantial
total  outstanding  indebtedness  may  adversely  affect  our  ability  to raise
additional funds.

         We believe that available cash, project financing,  equipment financing
and the sale of  indefeasible  rights-of-use  and  capacity on our network  will
provide  sufficient  funds for us to expand our  business as planned and to fund
our operating losses for at least the next 12 to 18 months.  However, the actual
amount of our future  capital  requirements  will depend on a number of factors,
including:

                  -   the success of our business;
                  -   the start-up dates for new tranmission infrastructure;
                  -   the rate at which we further expand our network;
                  -   the types of services that we offer;
                  -   staffing levels;
                  -   acquisitions and customer growth; and 
                  -   other factors that are not within our control,
                      including competitive conditions, government 
                      regulatory developments and capital costs.
 
         In the  event  that our  plans  or  assumptions  change  or prove to be
inaccurate  or  available  cash,  project  financing,  equipment  financing  and
proceeds from the sale of indefeasible rights-of-use and capacity on our network
prove  to be  insufficient  to fund our  growth  in the  manner  and at the rate
currently anticipated, we may be required to delay or abandon some or all of our
development and expansion plans or we may be required to seek additional sources
of financing earlier than currently anticipated.

COMPETITION

         Competitive pricing policies have created  substantial  pressure on our
gross  margins.  Our  success  depends  upon our  ability to compete  with other
telecommunications providers in each of our markets. These providers include the
incumbent  telecommunications  operator  in each  country  in which we  operate,
global alliances among some of the world's largest telecommunications  carriers,
such as "Global  One"  (Sprint,  France  Telecom and  Deutsche  Telekom)  and an
alliance between MCI Worldcom and Telefonica de Espania, and new entrants,  such
as alternative carriers, Internet backbone networks and other service providers.
Other potential  competitors include cable  communications  companies,  wireless
telephone companies, electric and other utilities with rights-of-way,  railways,
microwave  carriers  and  large  end-users  which  have  private  networks.  The
intensity of competition and price declines have increased over the past several
years and we believe that such  competition  and price declines will continue to
intensify,  particularly in Western Europe,  as other providers obtain operative
connectivity.  Many of our current and potential  competitors have substantially
greater  financial,  marketing and other  resources than us. If our  competitors
devote  significant  additional  resources to the provision of  international or
national long distance  telecommunications  services to our target customer base
of small and medium-sized businesses,  such action could have a material adverse
effect on our business,  financial  condition  and results of operations  and we
cannot assure you that we will be able to compete successfully.

         Customers in most of our current and targeted  European markets are not
accustomed    to   obtaining    services   from    competitors    to   incumbent
telecommunications   operators   and   may  be   reluctant   to   use   emerging
telecommunications providers, such as Viatel. In particular, our target customer
base of small and medium-sized businesses with significant international calling


                                       5
<PAGE>

needs,  may be  reluctant  to  entrust  their  telecommunications  needs  to new
operators that are believed to be unproven.  In addition, in continental Europe,
certain  of  our   competitors   (including  the  incumbent   telecommunications
operators) provide potential  customers with a broader range of services than we
currently offer.

         Competition  for  customers  in  the  telecommunications   industry  is
primarily  based on price and quality of  services  offered.  We price  services
primarily   by  offering   discounts   to  the  prices   charged  by   incumbent
telecommunications  operators and other major competitors.  However,  prices for
international long distance calls have decreased substantially over the past few
years in the markets in which we currently  maintain  operations  or in which we
expect to establish  operations.  Some of our larger  competitors may be able to
use their greater  financial  resources to cause severe price competition in the
countries in which we operate or expect to operate.  It appears  that  incumbent
telecommunications  operators in Western Europe are  responding to  deregulation
more rapidly and  aggressively  than occurred after  deregulation  in the United
States and the United  Kingdom.  We expect  that  prices for our  services  will
continue   to  decrease   for  the   foreseeable   future  and  that   incumbent
telecommunications  operators and other  dominant  telecommunications  providers
will continue to improve their product  offerings.  The  improvement  in product
offerings and service provisions by the incumbent  telecommunications  operators
could  similarly have a material  adverse effect on our  competitiveness  to the
extent  that the we are  unable  to  provide  similar  levels of  offerings  and
services. If the incumbent  telecommunications operator in any jurisdiction uses
its  competitive  advantages to their  fullest  extent,  our  operations in such
jurisdiction  would be adversely  affected.  Furthermore,  the marginal  cost of
carrying  calls over fiber optic cable is  extremely  low. As a result,  certain
industry  observers  have  predicted  that,  within a few  years,  there  may be
dramatic and substantial  price reductions and that long distance calls will not
be significantly more expensive than local calls. In addition,  certain carriers
are implementing plans to offer telecommunications services over the Internet at
substantially  reduced  prices.  Any price  competition  could  have a  material
adverse effect on our business, financial condition and results of operations.

         We believe that incumbent  telecommunications  operators generally have
certain competitive  advantages that we and other competitors do not have due to
their  control  over local  connectivity.  We  currently  rely on the  incumbent
telecommunications operators for access to the public switched telephone network
and  the  provision  of  leased   lines,   and  the  failure  of  the  incumbent
telecommunications   operators  to  provide  such  access  or  leased  lines  at
reasonable  pricing  or within a  reasonable  time  frame  could have a material
adverse effect on our business,  financial  condition and results of operations.
The reluctance of some national regulators to provide operative  interconnection
as a result of their failure to grant regulatory  approvals,  provide  necessary
provisioning  and  enforce  access to such  operators'  networks  and  essential
facilities could have a material adverse effect on our competitive  position. We
cannot  assure you that we will be able to compete  effectively  in any of these
markets.

SUBSTANTIAL GOVERNMENT REGULATION

         OVERVIEW.  National  and  local  laws  and  regulations  governing  the
provision  of   telecommunications   services  differ  significantly  among  the
countries   in  which  we   currently   operate  and  intend  to  operate.   The
interpretation  and  enforcement of such laws and  regulations  varies and could
limit our  ability to provide  certain  telecommunications  services  in certain
markets.  We cannot assure you that future regulatory,  judicial and legislative
changes will not have a material adverse effect on the Company, that domestic or
international  regulators or third parties will not raise  material  issues with
regard to our compliance or noncompliance  with applicable laws and regulations,
or that other  regulatory  activities will not have a material adverse effect on
our business, financial condition and results of operations.

         INTERNATIONAL TRAFFIC. Under the World Trade Organization Basic Telecom
Agreement  (the "WTO  Agreement"),  concluded on February 15, 1997, 69 countries


                                       6
<PAGE>

comprising 95% of the global market for basic telecommunications services agreed
to permit competition from foreign carriers.  In addition, 59 of these countries
have  subscribed  to  specific  procompetitive  regulatory  principles.  The WTO
Agreement  became  effective  on February 5, 1998 and has been  implemented,  to
varying degrees, by the signatory  countries.  We believe that the WTO Agreement
will  increase  opportunities  for us and our  competitors.  However,  we cannot
assure  you  that  the  WTO  Agreement  will  result  in  beneficial  regulatory
liberalization in all signatory countries.

         On November 26, 1997, the Federal Communications Commission adopted the
Foreign  Participation  Order to implement  the U.S.  obligations  under the WTO
Agreement. In this order, the Federal Communications  Commission adopted an open
entry  standard for carriers  from World Trade  Organization  member  countries,
generally  facilitating  market entry for such applicants by eliminating certain
existing  tests.  These  tests  remain in effect,  however,  for  carriers  from
non-World Trade Organization member countries.  Petitions for reconsideration of
the  Foreign  Participation  Order are  pending  at the  Federal  Communications
Commission.

         International  carriers  serving  the  United  States,   including  the
Company, remain subject to the Federal Communications Commission's international
settlement  policies,  including  rules  adopted by the  Federal  Communications
Commission  regarding  international  settlement rates which became effective on
January  1,  1998.  The  international  accounting  rate  system  allows  a U.S.
facilities-based  carrier  to  negotiate  an  "accounting  rate"  with a foreign
carrier  for  handling  each minute of  international  telephone  service.  Each
carrier's portion of the accounting rate,  usually  one-half,  is referred to as
the settlement rate. The international settlement rates order generally requires
U.S.  facilities-based carriers to negotiate settlement rates with their foreign
correspondent at no greater than Federal  Communications  Commission-established
"benchmark"  prices.  Historically,  international  settlement rates have vastly
exceeded the cost of terminating  telecommunications  traffic. In addition,  the
international  settlement  rates  order  imposed  new  conditions  upon  certain
carriers,  including the Company.  First, the Federal Communications  Commission
conditioned  facilities-based  authorizations  for service on a route on which a
carrier has a foreign  affiliate upon the foreign  affiliate  offering all other
U.S. carriers a settlement rate at or below the relevant benchmark.  Our foreign
affiliates in the United Kingdom,  Germany,  France and The Netherlands  satisfy
this condition.  Second, the Federal  Communications  Commission conditioned any
authorization  to provide  switched  services  over either  facilities-based  or
resold international  private lines upon the condition that at least half of the
facilities based international  message telephone service traffic on the subject
route is settled at or below the relevant benchmark rate. This condition applies
whether or not the licensee has a foreign affiliate on the route in question. In
the foreign  participation order described above,  however, if the subject route
does not comply with the benchmark  requirement,  a carrier can demonstrate that
the foreign country provides  "equivalent"  resale  opportunities.  Accordingly,
since the February 9, 1998 effective date of the Foreign Participation Order, we
have been  permitted  to resell  private  lines for the  provision  of  switched
services to any country that either has been found by the Federal Communications
Commission  to  comply  with  the  benchmarks  or  has  been  determined  to  be
equivalent.   We,  however,  remain  subject  to  prior  Federal  Communications
Commission  approval in order to provide  resold private lines to any country in
which we have an  affiliated  carrier  that has not  been  found by the  Federal
Communications  Commission to lack market power.  Many parties have appealed the
international  settlement  rates order to the U.S. Court of Appeals for the D.C.
Circuit  or  have  filed   petitions  for   reconsideration   with  the  Federal
Communications  Commission.  On January 12, 1999,  the U.S. Court of Appeals for
the  D.C.  Circuit  issued  an  order  resolving  this  appeal,   upholding  the
international  settlement  rates order in all respects.  The appellants now have
the option of requesting that the case be heard by the U.S.  Supreme Court.  The
petition  for  reconsideration  is still  pending at the Federal  Communications
Commission.  We  cannot  predict  the  outcome  of these  proceedings  and their
possible impact on the Company.


                                       7
<PAGE>

          Increasing    regulatory    liberalization    in    many    countries'
telecommunications  markets now permits more flexibility in the way we can route
calls. Although certain Federal Communications Commission rules limit the way in
which some international calls can be routed, we do not believe that our network
configuration,  specifically  the way in which  traffic  is routed  through  our
facilities in the UK, is  specifically  prohibited  by, or undermines in any way
the  intent  of,  these  rules.  It  is  possible,  however,  that  the  Federal
Communications  Commission  could find that our network  configuration  violates
these rules. If we were found to be in violation of these routing  restrictions,
and if the violation was  sufficiently  severe,  it is possible that the Federal
Communications Commission could impose sanctions and penalties upon the Company.

          CALL REORIGINATION. In addition, outside the European Union we provide
a small  number of  customers  with access to  services  through the use of call
reorigination.  A substantial  number of countries have prohibited certain forms
of call  reorigination.  We cannot  assure you that  certain of our services and
transmission   methods  will  not  be  or  not  become   prohibited  in  certain
jurisdictions  and,  depending on the  jurisdictions,  services and transmission
methods  affected,  there could be a material  adverse  effect on our  business,
financial condition and results of operations.

         UNSETTLED NATURE OF REGULATORY ENVIRONMENT.  We have pursued and expect
to continue to pursue a strategy of providing our services to the maximum extent
we believe  permissible under applicable laws and regulations.  Our provision of
services in Western  Europe may also be affected if any  European  Union  member
state imposes greater  restrictions on non-European Union international  service
than on such service  within the European  Union.  We cannot assure you that the
United  States  or  foreign  jurisdictions  will not  adopt  laws or  regulatory
requirements that will adversely affect us.  Additionally,  we cannot assure you
that future United States or foreign regulatory, judicial or legislative changes
will  not have a  material  adverse  effect  on us or that  regulators  or third
parties  will not raise  material  issues  with  regard to our  compliance  with
applicable laws or regulations.  If we are unable to provide the services we are
presently  providing or intend to provide or to use our existing or contemplated
transmission  methods,  due to our  inability  to  receive  or retain  formal or
informal approvals for such services or transmission  methods,  or for any other
reason related to regulatory  compliance or the lack thereof,  such events could
have a material adverse effect on our business,  financial condition and results
of operations.

         Since January 1, 1998, we, as well as our U.S.  competitors,  have been
required by the Federal  Communications  Commission to make  contributions  to a
universal service fund to subsidize  telecommunications  services for low-income
persons,  schools  and  libraries,  and  rural  health  care  providers.   These
contributions are based upon our gross revenues.  There can be no assurance that
we  will be able  fully  to pass  the  cost  of  these  contributions  on to our
customers or that doing so will not result in a loss of customers.

          EUROPEAN  IMPLEMENTATION.  The  national  governments  of the European
Union  member  states  were  required  to pass  legislation  to  liberalize  the
telecommunications  markets  within  their  countries to give effect to European
Commission  directives.  Although most of the member states have now implemented
the required  legislation,  they have done so on an inconsistent,  and sometimes
unclear,  basis. In addition,  the legislation and/or its implementation has, in
certain circumstances,  imposed significant obstacles on the ability of carriers
to  proceed  with  the  necessary  licensing  process.   Such  barriers  include
requirements  that carriers post significant  bonds,  make  significant  capital
commitments   to   build   infrastructure,    complete   extensive   application
documentation  and pay significant  license fees.  Implementation  has also been
slow in certain  member  states as a result of such  member  state's  failure to
dedicate the resources necessary to have a functioning regulatory body in place.
The above factors and other  potential  obstacles  associated with the effective
implementation  of  liberalization  could have a material  adverse effect on our
operations by preventing us from expanding our  operations  either as quickly or
as currently  intended,  as well as a material  adverse  effect on our business,
financial condition and results of operations.


                                       8
<PAGE>

RISKS ASSOCIATED WITH MANAGEMENT AND IMPLEMENTATION OF GROWTH STRATEGY

         Our rapid and continued growth has placed,  and is expected to continue
to place, a significant strain on our administrative,  operational and financial
resources and has increased demands on our systems and controls. In addition, we
cannot  assure you that we will be able to  successfully  add services or expand
our geographic  markets or that existing  regulatory  barriers to our current or
future operations will be reduced or eliminated. As we increase our services and
expand our geographic markets,  there will be additional demands on our customer
support,   sales  and  marketing  and   administrative   resources  and  network
infrastructure.  We cannot  assure you that our  administrative,  operating  and
financial  control systems and  infrastructure  will be adequate to maintain and
effectively  monitor  future  growth  or that  we  will be able to  successfully
attract,  train and manage  additional  employees.  The  failure to  continue to
upgrade  our  administrative,   operating  and  financial  control  systems  and
infrastructure or the occurrence of unexpected expansion difficulties could have
a material  adverse effect on our business,  financial  condition and results of
operations.  See "-  Dependence  on  Effective  Information  Systems;  Year 2000
Technology Risks."

RISK  ASSOCIATED  WITH  CONVERSION  TO THE "EURO";  RISKS  ASSOCIATED  WITH
INTERNATIONAL  OPERATIONS  AND FOREIGN EXCHANGE RATE RISKS

         In January  1999, a new currency  called the "euro" was  introduced  in
eleven of the  fifteen  European  Union  member  states.  There is a  three-year
phase-in  period for the euro,  and by January 2002 the  participating  European
Union  member  states  are  expected  to operate  with the euro as their  single
currency.  Some of the rules and regulations with regard to the euro have yet to
be promulgated and completed by the European Commission. Although our management
does not believe that the conversion to the euro will have a material or adverse
impact on our business,  they have not completed their  assessment of the effect
that  the  introduction  of  the  euro  will  have  on our  business,  financial
conditions and results of operations.

         There  are  certain  risks  inherent  in  conducting  an  international
business. Such risks include, among others:

          -    regulatory  limitations  restricting or prohibiting the provision
               of our services;
          -    unexpected changes in regulatory requirements,  tariffs, customs,
               duties and other trade barriers;
          -    difficulties in staffing and managing foreign operations;
          -    longer payment cycles;
          -    problems in collecting accounts receivable;
          -    political risks;
          -    fluctuations in currency exchange rates and the
               conversion  to the  "euro" by  several  members  of the  European
               Union;
          -    foreign exchange controls which restrict or prohibit repatriation
               of funds;
          -    technology export and import restrictions or prohibitions;
          -    delays from custom's brokers or government agencies;
          -    seasonal reductions in business activity during the summer months
               in Europe and certain other parts of the world; and
          -    potentially adverse tax consequences  resulting from operating in
               multiple jurisdictions with different tax laws.

         If any of these risks materialize,  our business,  financial  condition
and results of operations could be materially and adversely affected.

         Since our inception in 1991, we have invested heavily in developing our
ability to provide  international  telecommunications  services  within  Western
Europe and other deregulating markets and in developing and expanding our market
presence,  including entering into the national long distance telecommunications
markets in Belgium,  France,  Germany,  Italy, The  Netherlands,  and Spain. Our
payment obligations with respect to our outstanding indebtedness are denominated


                                       9
<PAGE>

in U.S.  Dollars and the euro,  but certain of our revenues are  denominated  in
Sterling.  Any appreciation in the value of the U.S. Dollar or the euro relative
to the  Sterling  could have a material  adverse  effect on our  ability to make
payments  on  such  obligations.  We do  not  currently  use  financial  hedging
transactions,  although in the future we may elect to manage the  exchange  rate
exposure  presented by our euro denominated  obligations.  We cannot provide any
assurance  that  exchange  rate  fluctuations  will not have a material  adverse
effect on our  ability to make  payments  on our  outstanding  indebtedness.  In
addition,  we  cannot  assure  you  that the  laws or  administrative  practices
relating to taxation,  foreign  exchange or other  matters in  countries  within
which we operate will not change.  Any such change could have a material adverse
effect on our business, financial condition and results of operations.


RISKS ASSOCIATED WITH ACQUISITIONS, INVESTMENTS AND STRATEGIC ALLIANCES

         We may  seek to  acquire  customer  bases  and  businesses  from,  make
investments in, or enter into strategic  alliances with,  other  companies.  Any
future acquisitions, investments, strategic alliances or related efforts will be
accompanied by the risks commonly  encountered in such transactions.  Such risks
include, among others:

          -    the difficulty of identifying appropriate acquisition candidates;
          -    the  difficulty of  assimilating  the operations and personnel of
               the acquired entities;
          -    the potential disruption of our ongoing business;
          -    the inability of  management  to capitalize on the  opportunities
               presented by acquisitions, investments or strategic alliances;
          -    the  failure to  successfully  incorporate  licensed  or acquired
               technology and rights into our services;
          -    the failure to maintain uniform standards,  controls,  procedures
               and policies; and
          -    the  impairment of  relationships  with  employees as a result of
               changes in management and ownership.

          Additionally,  in connection  with an  acquisition,  we may experience
rates of  customer  attrition  that are  significantly  higher  than the rate of
customer attrition which we generally  experience.  Further,  to the extent that
any such transaction  involves customer bases or businesses  located outside the
United  States,   the  transaction  would  involve  the  risks  associated  with
international  operations.  We cannot  assure you that we would be successful in
overcoming these risks or any other problems encountered with such acquisitions,
investments  or strategic  alliances.  See "- Risks  Associated  with the Viatel
Network"  and "- Risks  Associated  with  International  Operations  and Foreign
Exchange Rate Risks".

RAPIDLY CHANGING INDUSTRY, TECHNOLOGY AND CUSTOMER REQUIREMENTS;
SIGNIFICANT PRICE DECLINES

         The telecommunications industry is changing rapidly due to, among other
factors, (1) liberalization,  (2) privatization of incumbent  telecommunications
operators,  (3)  technology and customer  requirements,  (4)  significant  price
declines,  (5) technological  improvements,  (6) expansion of telecommunications
infrastructure and (7) the continued  globalization of the world's economies and
free trade. Such changes may happen at any time and can significantly affect our
operations from period-to-period. We cannot assure you that one or more of these
factors will not have  unforeseen  effects  which could have a material  adverse
effect on the Company.  Also,  we cannot  assure you, even if these factors turn
out as  anticipated,  that we will be able to implement our strategy or that our
strategy will be accepted in this rapidly evolving market.

         The   telecommunications   industry  is   characterized  by  rapid  and
significant  technological  advancements,  introductions  of  new  products  and
services  utilizing  new  technologies  and  broadband  applications,  increased
availability of transmission  capacity and increased utilization of the Internet
for voice and data transmission.  As new technologies  develop, we may be placed


                                       10
<PAGE>

at a  competitive  disadvantage  and  competitive  pressures  may  force  us  to
implement such new  technologies at substantial  cost. In addition,  competitors
may  implement  new   technologies   before  we  are  able  to  implement   such
technologies,  allowing  such  competitors  to  provide  enhanced  services  and
superior  quality compared to those provided by us. We cannot assure you that we
will  be able to  respond  to such  competitive  pressures  and  implement  such
technologies  on a timely  basis or at an  acceptable  cost.  One or more of the
technologies  currently utilized by us, or which we may implement in the future,
may not be preferred by our customers or may become  obsolete.  If we are unable
to respond to  competitive  pressures,  implement new  technologies  on a timely
basis,  penetrate new markets in a timely manner in response to changing  market
conditions or customer  requirements,  or if new or enhanced services offered by
us do not  achieve a  significant  degree of market  acceptance,  any such event
could have a material  adverse effect on our business,  financial  condition and
results of operations.

          Prices for  international  long distance calls were  historically kept
artificially  high in part by above-cost  international  settlement  rates which
allowed  carriers to enjoy high gross margins on international  calls.  However,
many  observers   believe  that,  given  the  negligible   marginal  cost  to  a
facilities-based  carrier  of  carrying  an  international  call and  given  the
emergence of competition in many countries,  the  international  settlement rate
system is in the process of collapsing and that the price of international calls
will not be  sufficiently  more expensive than domestic long distance  calls. In
addition, the European Union Interconnection  Directive,  which became effective
in January 1998, requires European Union operators with significant market power
to  charge  cost-based  and   non-discriminatory   prices  for  transmission  of
cross-border  traffic. This has had an effect on settlement rates with countries
and territories outside the European Union and may contribute to the collapse of
the international settlement rate system. For the foregoing reasons, during 1998
and the first six weeks of 1999  substantial  price reductions were reflected in
international rates,  particularly the rates charged for calls between countries
where competition exists. This represents a steep decline from rates charged for
such calls as recently as several years ago and we expect rates on international
calls, particularly between the United States and Western Europe, to continue to
decline significantly.  Furthermore,  the Federal Communications  Commission has
adopted the  international  settlement  rate  order,  which is designed to bring
downward pressure on international telephone rates by requiring U.S. carriers to
pay lower settlement rates to their correspondent foreign carriers.

         Industry observers predict that telephone charges will be less affected
by the distance a call is carried,  particularly with the possible increased use
of voice  services  over the  internet.  As a  consequence,  if we are unable to
effectively implement our strategy of owning,  rather than leasing,  facilities,
we could  experience a  substantial  reduction in gross margin on  international
calls  which,  absent a  substantial  increase  in  billable  minutes of traffic
carried or charges for additional services, would have a material adverse effect
on our business,  financial  condition and results of  operations.  In addition,
during 1998 a number of  incumbent  telecommunications  operators  took steps to
substantially reduce retail prices, in excess of reductions in wholesale prices,
in an effort to protect their market and deter  competitors,  such as us. See "-
Competition."

DEPENDENCE ON EFFECTIVE INFORMATION SYSTEMS; YEAR 2000 TECHNOLOGY RISKS

         To  efficiently  produce  customer  bills in a timely  manner,  we must
record and process millions of call detail records quickly and accurately. While
we believe that our billing and information systems are currently sufficient for
our operations,  such systems will require enhancements and ongoing investments,
particularly  as  volume  increases.  We  cannot  assure  you  that we will  not
encounter  difficulties  in enhancing our systems or integrating  new technology
into our systems.  Our failure to implement any required system enhancement,  to
acquire  new  systems  or to  integrate  new  technology  in a  timely  and cost
effective manner could have a material adverse effect on our business, financial
condition and results of operations.


                                       11
<PAGE>

         The year 2000 issue is the result of computer programs, microprocessors
and embedded  date reliant  systems  using two digits rather than four to define
the  applicable  year. If such programs are not  corrected,  such date sensitive
computer  programs,  microprocessors  and embedded  systems may recognize a date
using "00" as the year 1900  rather than the year 2000.  This could  result in a
system failure or miscalculation causing disruptions in operations. In an effort
to assess our year 2000 state of  readiness,  during 1997 we began  performing a
complete  inventory  assessment  of  all  of  our  information   technology  and
non-information  technology systems, the vast majority of which have either been
developed or purchased by us within the past four years.  Based on our review to
date,  we believe that the vast  majority of our existing  systems are year 2000
compliant.  However,  we cannot provide any assurance until the year 2000 occurs
that such is the case.  With regard to systems which are not currently year 2000
compliant,  we are  actively  replacing  such  systems to ensure our  ability to
continue to meet our internal needs and the  requirements  of our customers.  We
currently  anticipate  that the upgrade or  modification  of such  non-compliant
systems will be completed  during the first half of 1999. We have also initiated
formal  communications  with the key  carriers  and other  vendors  on which our
operations and  infrastructure are dependent to determine the extent to which we
are  susceptible to a failure  resulting  from such third parties'  inability to
remediate their own year 2000 issues. We cannot assure you that the carriers and
other vendors on which our  operations  and  infrastructure  rely are or will be
year 2000 compliant in a timely manner.  Interruptions in the services  provided
to us by these  third  parties  could  result in  disruptions  in our  services.
Depending upon the extent and duration of any such  disruptions and the specific
services affected,  such disruptions could have a material adverse affect on our
business,   financial   condition  and  results  of  operations.   In  addition,
disruptions in the economy generally  resulting from year 2000 issues could also
have a  material  adverse  affect  on us.  We could  be  subject  to  litigation
resulting  from  any  disruption  in our  services.  The  amount  and  potential
liability or lost revenue cannot be reasonably estimated at this time.


RELIANCE ON THIRD PARTIES FOR LEASED CAPACITY AND INTERCONNECTION ARRANGEMENTS

         Other than our fiber  ring  which  connects  London,  Paris,  Brussels,
Antwerp and  Rotterdam and  indefeasible  rights-of-use  and minimum  investment
units which we own in certain  digital fiber optic  cables,  we do not currently
own  any  other  telecommunications  transmission  lines.  As a  result,  we are
generally  not able to  terminate  calls over our own network and are  currently
dependent upon other facilities-based  carriers,  virtually all of which are our
competitors. We currently lease transmission lines from the respective incumbent
telecommunications  operator in each  country in which we operate.  In addition,
our ability to access customers and effectively utilize our network is dependent
upon our  ability  to secure  operative  interconnection  agreements,  providing
access and egress into and from the public switched telephone network,  with the
respective  incumbent  telecommunications  operator  in each  market in which we
operate. We currently have interconnection  agreements with Cable & Wireless and
British  Telecom in the United  Kingdom,  France  Telecom in France,  KPN in The
Netherlands,  Infostrada in Italy and Deutsche Telekom in Germany, and expect to
secure  additional  interconnection  agreements in certain other  European Union
member states in which we operate. Difficulties or delays in obtaining necessary
operative  interconnections in a satisfactory or timely manner may significantly
delay or prevent  the  maximum  utilization  of our  network  which could have a
material adverse effect on Viatel.

          Notwithstanding  our fiber ring connecting  London,  Paris,  Brussels,
Antwerp and Rotterdam,  we currently lease capacity for point-to-point  circuits
with fixed monthly  payments and buy minutes of use pursuant to agreements  with
maximum   twelve-month  terms  and  are  vulnerable  to  changes  in  our  lease
arrangements,  capacity  limitations  and  service  cancellations.  These  lease
arrangements  present us with high fixed costs,  while revenues generated by the
utilization  of these  leases  will vary  based on traffic  volume and  pricing.
Accordingly,  if we are  unable  to  generate  sufficient  traffic  volume  over
particular  routes or are unable to charge  appropriate  rates, we could fail to
generate  revenue  sufficient to meet the fixed costs  associated with the lease
and may incur  negative  gross margins with respect to such routes.  Although we
believe that our arrangements and  relationships  with other carriers  generally


                                       12
<PAGE>

are  satisfactory,  the  deterioration  or termination of our  arrangements  and
relationships  with one or more carriers could have a material adverse effect on
our cost structure,  service quality, network coverage,  financial condition and
results of operations.

DEPENDENCE ON CARRIER CUSTOMERS

         Viatel derives a significant  portion of its revenues from a relatively
small number of carrier customers.  Accordingly, the loss of revenue from one or
more carrier  customers could have a material  adverse effect upon our business,
financial condition and results of operations.

         Carrier  customers are extremely price sensitive,  generate  relatively
low margin  business  and often  choose to move their  business  based solely on
small price  changes.  In addition,  smaller  carrier  customers  generally  are
perceived  in the  telecommunications  industry as  presenting  a higher risk of
payment  delinquency or non-payment than other customers.  While we believe that
our credit  criteria  enables us to reduce our  exposure  to the higher  payment
risks  generally  associated with carrier  customers,  we cannot assure you that
such criteria will afford adequate protection against such risks.


DEPENDENCE ON KEY PERSONNEL

         The success of our business will depend, to a significant  extent, upon
the abilities and continued efforts of our senior  management,  and particularly
upon the  abilities  and  efforts of Michael J.  Mahoney,  our  Chairman,  Chief
Executive Officer and President.  We do not currently have employment agreements
with any executive  officer other than Mr.  Mahoney,  Allan L. Shaw,  our Senior
Vice President of Finance and Chief Financial  Officer,  and Sheldon M. Goldman,
our Senior Vice President,  Business Development and General Counsel. Except for
a $3.0 million  "key-man" life insurance policy which we obtained on the life of
Mr.  Mahoney,  we do not maintain  and do not  contemplate  obtaining  such life
insurance policies on any of our employees.  Our success also will depend on our
ability  to  attract,  retain  and  motivate  qualified  management,  marketing,
technical and sales  executives  and other  personnel who are in high demand and
are often subject to competing employment opportunities.  In addition, the labor
market for software  engineers and central office technicians has been extremely
competitive  recently  and we may lose key  employees  or be forced to  increase
their compensation.  The loss of the services of key personnel, or the inability
to attract additional qualified personnel,  could have a material adverse effect
on our business, financial condition and results of operations. We cannot assure
you that we will be successful in  attracting,  retaining  and  motivating  such
personnel.

CONTROL BY PRINCIPAL STOCKHOLDERS

         To our knowledge,  as of December 31, 1998, COMSAT  Investments,  Inc.,
S-C  V-Tel  Investments  and  Martin  Varsavsky  controlled,  in the  aggregate,
approximately 32% of our outstanding common stock and Mr. Varsavsky individually
beneficially  owned 15% of such  shares.  To the extent that these  stockholders
exercise  their voting rights in concert,  they will have the power to influence
the election of Directors and the outcome of most matters requiring  stockholder
approval.  In addition,  without the consent of these stockholders,  we could be
prevented  from entering into certain  transactions  that could be beneficial to
us. Also,  third parties could be discouraged  from making a tender offer or bid
to acquire our company at a price per share that is above the price at which the
stock is trading on Nasdaq.

POSSIBLE LIMITATIONS ON NET OPERATING LOSS CARRY FORWARDS

         As of  December  31,  1997,  we had unused  United  States  federal and
foreign  income tax net operating  loss  carryforwards  of  approximately  $94.7
million. Such net operating loss carryforwards begin to expire in the year 2007.


                                       13
<PAGE>

         As a result of an "ownership  change," as defined in Section 382 of the
Internal Revenue Code of 1986, as amended,  in October 1996,  certain of our net
operating loss carryforwards from periods before such time are subject to annual
limitations.  Section 382 of the Internal Revenue Code imposes  limitations with
respect  to the  carryforward  of net  operating  losses by a  corporation  that
experiences a more-than-50 percent ownership change over a three-year period (or
over a shorter  period if there has been a prior  ownership  change  within  the
immediately  preceding  three-year  period).  In general,  if such an  ownership
change occurs, Section 382 of the Internal Revenue Code limits the amount of the
net operating  losses carried over from  pre-ownership  change years that can be
used  in any  post-ownership  change  year to an  amount  equal  to the  product
obtained by multiplying (1) the value of the  corporation's  capital stock (with
certain  adjustments)  at the time of the  ownership  change and (2) an interest
rate  determined by the Internal  Revenue Service for the month of the ownership
change.

         It is possible  that the  issuance of the shares  contemplated  by this
Prospectus,  when combined with  subsequent  direct and indirect  changes in the
ownership of the  Company's  capital stock within the relevant  testing  period,
could  result in a  more-than-50  percent  ownership  change  and  substantially
restrict the  Company's  subsequent  use of its then unused net  operating  loss
carryforwards.

         We will be required to pay U.S. federal income tax in any year in which
our  taxable  income  exceeds  the  amount  of each of the  net  operating  loss
carryforwards  limited by Section 382 of the  Internal  Revenue  Code,  plus the
aggregate net operating loss carryforwards from years after an ownership change.
To the extent that we do not use the full  amount of our  limited net  operating
loss  carryforwards in any year, such unused portion can be used to increase the
net operating loss  carryforward  limitation  for subsequent  years prior to the
expiration of the net operating loss carryforwards subject to the limitation.

VARIABILITY OF OPERATING RESULTS

         Our quarterly operating results have fluctuated in the past,  primarily
as a result of the evolution of our business, and may fluctuate significantly in
the future as a result of a variety of factors, including:

          -    pricing changes in the industry;
          -    changes in the mix of  services  sold or channels  through  which
               those services are sold;
          -    changes in user demand, customer terminations of service, capital
               expenditures  and other costs  relating to the  expansion  of our
               network;
          -    the start-up of three phases of the Circe Network;
          -    the timing and costs of any  acquisitions  of customer  bases and
               businesses, services or technologies;
          -    the timing and costs of marketing and advertising efforts;
          -    the effects of government  regulation and regulatory changes; and
          -    specific economic conditions in the telecommunications industry.

Such variability could have a material adverse effect on our business, financial
condition and results of operations. Any significant shortfall in demand for our
services in relation to our expectations,  or the occurrence of any other factor
which causes revenue to fall significantly short of our expectations, would also
have a material adverse effect on our business,  financial condition and results
of  operations.  In addition,  the  uncertainty  of revenue  growth coupled with
substantial  planned increases in operating expenses and the continued evolution
in our transmission methodology from switchless resale to use of our network may
result in substantial  quarterly  fluctuations in our operating results. See "--
Limited  Operating  History;  Substantial Net Losses and Negative Cash Flow from
Operations."

ANTI-TAKEOVER CONSIDERATIONS

         Viatel's  Certificate  of  Incorporation  and By-laws  include  certain
provisions  which are  intended  to enhance the  likelihood  of  continuity  and


                                       14
<PAGE>

stability in the  composition  of our Board of Directors  and which may have the
effect of  delaying,  deterring  or  preventing  a future  takeover or change in
control,  unless such  takeover or change in control is approved by our Board of
Directors,  even though such a  transaction  may offer the holders of our common
stock the  opportunity  to sell such shares of our common stock at a price above
the  prevailing  market price.  Such  provisions  may also render the removal of
directors and  management  more  difficult.  Specifically,  the  Certificate  of
Incorporation  and By-laws provide for a classified  Board of Directors  serving
staggered,   three-year  terms  and  certain  advance  notice  requirements  for
stockholder nominations of candidates for election to our Board of Directors and
certain other stockholder proposals.  Such provisions could limit the price that
certain  persons  might be willing to pay in the future for shares of our common
stock.  In addition,  the Board of  Directors  could  authorize  the issuance of
additional  shares of our  Preferred  Stock,  which shares,  depending  upon the
rights, designations, preferences, qualifications, limitations, and restrictions
thereof,  may have the effect of delaying,  deterring or  preventing a change in
control or may otherwise adversely affect the interests of holders of our common
stock. In addition,  certain provisions of the Delaware General  Corporation Law
prevent certain  stockholders  from engaging in business  combinations  with the
Company, subject to certain exceptions.

         The indentures  pursuant to which the vast majority of our  outstanding
indebtedness  was issued provide that, upon the occurrence of certain  specified
events, we will be required to make an offer to purchase all of the indebtedness
outstanding under such indentures at the purchase price stated therein. However,
our ability to repurchase such  indebtedness  upon the occurrence of such events
may be  limited  by the  terms of other  existing  contractual  obligations.  In
addition, we cannot assure you that, in the event of a triggering event, we will
have, or will have access to, sufficient funds to repurchase such  indebtedness.
If we fail to  repurchase  all of  indebtedness  tendered for purchase  upon the
occurrence  of a triggering  event,  such failure  will  constitute  an Event of
Default under the indentures.  Further,  pursuant to the terms of our Salary and
Benefits  Continuation  Program  salaried  employees  with at least  one year of
consecutive  service  with us may be  entitled  to receive a payment of a salary
continuation  benefit if their  employment  is  involuntarily  terminated  under
conditions  specified  in the program  within one year after  certain  specified
events.  Maximum benefits  currently payable under the Program in the event of a
triggering  event are limited to three months' base salary,  plus two additional
weeks of salary for each completed year of service. In addition,  the employment
agreements  between the Company  and each of Messrs.  Mahoney,  Shaw and Goldman
contain provisions which require us to make certain payments to such officers in
certain  instances if  employment  is  terminated  following  certain  specified
events.  Finally,  our Amended Stock  Incentive  Plan provides that  outstanding
options,  restricted stock or stock appreciation  rights held by certain members
of management vest in their entirety and become exercisable, and as with respect
to restricted  stock, are released from  restrictions on transfer and repurchase
rights in event of certain corporate transactions.

VOLATILITY OF MARKET PRICE OF COMMON STOCK

         Since our common stock has been  publicly  traded,  the market price of
our common stock has  fluctuated  over a wide range and may continue to do so in
the future. The market price of our common stock could be subject to significant
fluctuations in response to various factors and events,  including,  among other
things,  the depth and  liquidity  of the  trading  market of our common  stock,
variations in our operating  results and the  difference  between actual results
and the results expected by investors and securities analysts. In addition,  the
stock market in recent years has experienced broad price and volume fluctuations
that have often been unrelated to the operating performance of companies.  These
broad  market  fluctuations  also may  adversely  affect the market price of our
common stock.

SHARES ELIGIBLE FOR FUTURE SALE

         Sales of  substantial  amounts  of  shares of our  common  stock in the
public market, or even the potential for such sales,  could adversely affect the
prevailing  market  price of our common  stock and  impair our  ability to raise
additional capital through the sale of equity securities.


                                       15
<PAGE>

                                   THE COMPANY


         GENERAL. Viatel is a rapidly growing, facilities-based, global provider
of telecommunications  services, primarily to small and medium-sized businesses,
carriers  and  resellers.  The  Company  currently  operates  one of the largest
alternative  Pan-European networks, with international gateway switching centers
in New York,  New York and  London,  England,  network  points of presence in 30
cities,  direct sales forces in nine Western  European cities and indirect sales
offices in more than 100  additional  locations in Western  Europe.  The Company
offers a broad array of  competitively  priced,  value-added  services and voice
telephony to more than 230 countries and territories worldwide.

         SERIES A PREFERRED STOCK AND SUBORDINATED  CONVERTIBLE  DEBENTURES.  On
April 8, 1998,  the  Company  issued and sold in a  transaction  exempt from the
registration requirements of the Securities Act of 1933, (i) 500,000 units, each
of which  consisted of one 12.50%  Senior  Discount  Note Due 2008 and .490 of a
share  of 10%  Redeemable  Convertible  Series  A  Preferred  Stock  ("Series  A
Preferred  Stock");  (ii) 400,000 units,  each of which  consisted of one 11.25%
Senior  Note Due 2008 and .483 of a share of  Series A  Preferred  Stock;  (iii)
226,000  units,  each of which  consisted of one DM  denominated  12.40%  Senior
Discount Note Due 2008 and 2.77 10% Subordinated Convertible Debentures due 2011
(the "Subordinated Debentures"); and (iv) 178,000 units, each of which consisted
of one DM  denominated  11.15%  Senior  Note  Due  2008  and  2.69  Subordinated
Debentures.

         As required by the terms of the April 8, 1998 offering,  in August 1998
the Company  commenced a registered  exchange offer pursuant to which it offered
to exchange  each series of  unregistered  notes  issued in the  offering for an
issue of  notes  with  terms  identical  to each  such  series  of  notes.  Upon
effectiveness of such registration statement,  the units automatically separated
into their constituent parts.

         The Registration Statement of which this Prospectus is a part was filed
pursuant to the terms of the Conversion  Shares  Registration  Rights Agreement,
dated April 3, 1998,  between the  Company  and the  initial  purchasers  of the
units,  which  requires  that on or prior to April 8, 1999 the Company  file and
cause to be effective a shelf  registration  statement with respect to issuances
of our  common  stock  upon  conversion  of the  Series A  Preferred  Stock  and
Subordinated  Debentures.  Subject to certain "blackout periods," the Company is
required  to keep the  Registration  Statement  effective  for two  years or, if
earlier,  when all the Series A Preferred Stock and Convertible  Debentures have
been convertible into shares of our common stock.

         The  Series A  Preferred  Stock  and the  Subordinated  Debentures  are
mandatorily convertible into shares of our common stock if the per share closing
price of the common stock for any 20 consecutive  trading days during the twelve
months ended April 15, 1999,  April 15, 2000,  April 15, 2001, April 15, 2002 or
April 15, 2003, exceeds $26.40, $32.30, $38.20, $44.10 or $50.00,  respectively;
provided that no such conversion may occur (i) until April 8, 1999 and until the
Registration Statement becomes effective and (ii) unless the price of our common
stock on the conversion date exceeds the relevant price listed above.

         In  addition,  the  Series  A  Preferred  Stock  and  the  Subordinated
Debentures may be converted at the option of the holder, at any time after April
8, 1999 at a conversion  price of $13.20 per share of common stock,  in the case
of the Series A Preferred Stock, and DM 24.473 per share of common stock, in the
case  of  the  Subordinated   Debentures,   in  each  case  subject  to  certain
adjustments.


                                 USE OF PROCEEDS

         We  will  not  receive  any  proceeds   from  the   conversion  of  the
Subordinated Debentures or the Series A Preferred Stock by the holders thereof.


                                       16
<PAGE>

                              PLAN OF DISTRIBUTION

         This Prospectus registers 6,824,249 shares of common stock to be issued
upon the  conversion of the  Subordinated  Debentures and the Series A Preferred
Stock by the holders thereof.

         Upon  conversion  of the  Subordinated  Debentures  and  the  Series  A
Preferred  Stock,  the holders  shall receive  registered  common stock from the
Company,  which may be sold in any one or more  transactions on the Nasdaq Stock
Market,  or any  exchange on which the common  stock may then be listed,  in the
over-the-counter market or otherwise in negotiated transactions or a combination
of such methods of sale,  at market  prices  prevailing  at the time of sale, at
prices related to such prevailing market prices or at negotiated prices.


                                  LEGAL MATTERS

         Certain  legal  matters  relating  to the  validity  of the  securities
covered  hereby will be passed upon for the Company by Kelley Drye & Warren LLP,
New York, New York.


                                     EXPERTS

         The consolidated  financial statements and schedule of Viatel, Inc. and
subsidiaries  as of December 31, 1996 and 1997, and for each of the years in the
three-year  period ended December 31, 1997, have been  incorporated by reference
in the  Registration  Statement  in  reliance  upon  the  report  of  KPMG  LLP,
independent certified public accountants,  incorporated by reference herein, and
upon the authority of said firm as experts in accounting and auditing.


                              AVAILABLE INFORMATION

         Viatel is subject to the  informational  requirements of the Securities
Exchange  Act of 1934,  and,  in  accordance  therewith,  files  reports,  proxy
statements and other  information  with the  Securities and Exchange  Commission
(the  "Commission").  Such reports,  proxy and information  statements and other
information  may be read and copied at the Public  Reference Room  maintained by
the Commission at 450 Fifth Street,  N.W.,  Washington,  D.C. 20549,  and at the
following Regional Offices of the Commission:  7 World Trade Center, Suite 1300,
New York,  New York 10048,  and 500 West Madison  Street,  Suite 1300,  Chicago,
Illinois  60661-2511.  Copies of such  material  also may be  obtained  from the
Public  Reference  Section  of  the  Commission,  at  450  Fifth  Street,  N.W.,
Washington,  D.C. 20549 at prescribed rates. Information regarding the operation
of the  Commission's  Public  Reference  Room may be  obtained  by  calling  the
Commission at  1-800-SEC-0330.  The  Commission  also  maintains a Web site that
contains  reports,  proxy  and  information  statements  and  other  information
regarding registrants that file electronically with the Commission.  The address
of the Commission's Web site is  http://www.sec.gov.  Our common stock is traded
on Nasdaq, and its periodic reports,  proxy and information statements and other
information can be inspected at the offices of Nasdaq Operations, 1735 K Street,
N.W.,  Washington,  D.C.  20006.  Information  regarding the Company may also be
obtained from its Web site at http://www.viatel.com.

         This Prospectus  constitutes a part of a Registration Statement on Form
S-3 (herein,  together  with all  amendments  and  exhibits,  referred to as the
"Registration  Statement")  filed by the Company with the  Commission  under the
Securities Act of 1933.  This Prospectus does not contain all of the information
set forth in the Registration  Statement,  certain parts of which are omitted in
accordance with the rules and  regulations of the Commission.  Reference is made
to the  Registration  Statement  and exhibits  thereto for further  information.
Exhibits to the Registration Statement that are omitted from this Prospectus may
also be  obtained  at the  Commission's  Web site  described  above.  Statements
contained or incorporated by reference  herein  concerning the provisions of any
agreement or other document filed as an exhibit to the Registration Statement or


                                       17
<PAGE>

otherwise  filed with the Commission are not necessarily  complete,  and readers
are  referred  to the copy so filed  for more  detailed  information,  each such
statement being qualified in its entirety by such reference.


                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The  following  documents  heretofore  filed  by the  Company  with the
Commission  pursuant to the  Securities  Exchange  Act of 1934 are  incorporated
herein by reference in this Prospectus:

              (i)    Annual  Report  on Form  10-K  for the  fiscal  year  ended
                     December 31, 1997,  as filed with the  Commission  on March
                     31,  1998  and  amended  by Form  10-K/A-1  filed  with the
                     Commission on April 29, 1998;

              (ii)   Quarterly  Report on Form 10-Q for the quarter  ended March
                     31, 1998, as filed with the Commission on May 15, 1998;

              (iii)  Quarterly  Report on Form 10-Q for the  quarter  ended June
                     30, 1998, as filed with the Commission on August 14, 1998;
              (iv)   Quarterly  Report  on  Form  10-Q  for  the  quarter  ended

                     September  30,  1998,  as  filed  with  the  Commission  on
                     November 16, 1998;

              (v)    Current Report on Form 8-K, as filed with the Commission on
                     March 3, 1998;

              (vi)   Current Report on Form 8-K, as filed with the Commission on
                     June 8, 1998; and

              (vii)  The description of Viatel's common stock,  $0.01 par value,
                     contained in the Company's  Registration  Statement on Form
                     8-A  (Registration No. 000-21261) filed with the Commission
                     on August  27,  1996  under  Section  12 of the  Securities
                     Exchange Act of 1934.

         All  reports  and other  documents  filed by the  Company  pursuant  to
Section 13(a),  13(c), 14 or 15(d) of the Securities  Exchange Act of 1934 after
the date of this  Prospectus and prior to the termination of this offering shall
be deemed to be  incorporated  by reference  herein and to be a part hereof from
the date of filing of such reports and documents.  Any statement  contained in a
document  incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or  superseded  for  purposes  of this  Prospectus  to the
extent that a statement  contained  therein or in any other  subsequently  filed
document  which  also is or is deemed to be  incorporated  by  reference  herein
modifies  or  supersedes  such  statement.  Any such  statement  so  modified or
superseded  shall  not be  deemed,  except  as so  modified  or  superseded,  to
constitute a part of this Prospectus.

         The Company will provide  without charge to each person,  including any
beneficial  owner, to whom a copy of this Prospectus is delivered,  upon written
or  oral  request  of  such  person,  a copy  of  any  or  all of the  documents
incorporated  by  reference  in this  Prospectus  (other  than  exhibits to such
documents,  unless such exhibits are specifically incorporated by reference into
such  documents).  Written requests for such documents should be directed to the
Director of Investor  Relations at the  Company's  principal  executive  offices
located at 685 Third Avenue,  New York,  New York 10017 or by telephone at (212)
350-9200.






                                       18
<PAGE>

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS


ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

         The following table sets forth the various expenses,  all of which will
be paid by the Registrant in connection  with the sale and  distribution  of the
securities being  registered.  All of the amounts shown are estimates except the
SEC registration fee.



SEC Registration Fee ...........................            $   35,859.30

Legal Fees and Expenses ........................            $   15,000.00

Accounting Fees and Expenses ...................            $    2,500.00

Miscellaneous expenses .........................            $      913.97
                                                               ----------

   Total .......................................            $   54,273.27
                                                               ==========


ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

         Section  145 of the General  Corporations  Law of the State of Delaware
(the "DGCL")  provides that a Delaware  corporation may indemnify any person who
was or is a party or is threatened to be made a party to any threatened, pending
or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative  (a  "proceeding")  (other than an action by or in the right of
the  corporation)  by reason of the fact that he is or was a director,  officer,
employee or agent of the corporation, or is or was serving at the request of the
corporation as a director,  officer,  employee or agent of another  corporation,
partnership,   joint  venture,  trust  or  other  enterprise,  against  expenses
(including  attorneys'  fees),  judgments,  fines and amounts paid in settlement
actually and reasonably  incurred by him in connection with such action, suit or
proceeding if he acted in good faith and in a manner he  reasonably  believed to
be in or not opposed to the best interests of the corporation, and, with respect
to any criminal  action or  proceeding,  had no reasonable  cause to believe his
conduct was unlawful. A Delaware corporation may indemnify any person under such
Section in connection with a proceeding by or in the right of the corporation to
procure  judgment in its favor, as provided in the preceding  sentence,  against
expenses (including  attorneys' fees) actually and reasonably incurred by him in
connection  with the  defense  or  settlement  of such  action,  except  that no
indemnification  shall be made with respect thereto unless, and then only to the
extent that, a court of competent  jurisdiction shall determine upon application
that  such  person is fairly  and  reasonably  entitled  to  indemnity  for such
expenses as the court shall deem proper.  A Delaware  corporation must indemnify
present or former  directors  and officers who are  successful  on the merits or
otherwise  in defense of any  action,  suit or  proceeding  or in defense of any
claim,  issue or matter in any  proceeding,  by reason of the fact that he is or
was a  director,  officer,  employee  or agent of the  corporation  or is or was
serving  at  the  request  of  the  corporation,   against  expenses  (including
attorneys'  fees)  actually  and  reasonably   incurred  by  him  in  connection
therewith. A Delaware corporation may pay for the expenses (including attorneys'
fees) incurred by an officer or director in defending a proceeding in advance of
the final  disposition  upon receipt of an  undertaking  by or on behalf of such
officer or director to repay such amount if it shall  ultimately  be  determined
that he is not entitled to be indemnified by the  corporation.  Article Tenth of
the Registrant's Amended and Restated Certificate of Incorporation and Article X
of the Registrant's  Amended and Restated Bylaws provide for  indemnification of
directors  and  officers to the fullest  extent  permitted by Section 145 of the
DGCL.


                                      II-1
<PAGE>



         Section  102(b)(7) of the DGCL permits a corporation  to provide in its
certificate of incorporation  that a director shall not be personally  liable to
the  corporation  or its  stockholders  for  monetary  damages  for a breach  of
fiduciary  duty as a director,  except for  liability  (i) for any breach of the
director's duty of loyalty to the corporation or its stockholders,  (ii) for any
acts or omissions not in good faith or which involve intentional misconduct or a
knowing  violation  of law,  (iii) with  respect to  certain  unlawful  dividend
payments or stock  redemptions or repurchases or (iv) for any  transaction  from
which the director derived an improper  personal  benefit.  Article Ninth of the
Registrant's  Amended and Restated  Certificate of Incorporation  eliminates the
liability of directors to the fullest extent  permitted by Section  102(b)(7) of
the DGCL.

         Section 145 of the DGCL permits a corporation  to purchase and maintain
insurance on behalf of any person who is or was a director, officer, employee or
agent of the corporation, or is or was serving at the request of the corporation
as a director,  officer, employee or agent of another corporation,  partnership,
joint venture,  trust or other employee  against any liability  asserted against
such  person and  incurred by such  person in such  capacity,  or arising out of
their  status as such,  whether or not the  corporation  would have the power to
indemnify  directors and officers  against such  liability.  The  Registrant has
obtained officers' and directors' liability insurance of $15 million for members
of its Board of Directors and executive  officers.  In addition,  the Registrant
has entered into  agreements  to indemnify  its  directors and officers from and
against any Expenses (as defined in the  indemnity  agreement)  incurred by such
person in connection  with  investigating,  defending,  serving as a witness in,
participating  in (including on appeal) or preparing for any of the foregoing in
any threatened, pending or contemplated action, suit or proceeding (including an
action  by or in the  right  of the  Registrant),  or any  inquiry,  hearing  or
investigation,  to the  fullest  extent  permitted  by law,  as such  law may be
amended  or  interpreted  (but  only  to  the  extent  that  such  amendment  or
interpretation  provides  for broader  indemnification  rights).  The  indemnity
agreement contains certain provisions to ensure that the indemnitee receives the
benefits contemplated by the agreement in the event of a "change in control" (as
defined in the indemnity  agreement) such as the  establishment and funding of a
trust  in an  amount  sufficient  to  satisfy  any and all  expenses  reasonably
anticipated to be incurred by the indemnitee in connection  with  investigating,
preparing for, participating in and/or defending a proceeding.

         At  present,  there  is  no  pending  litigation  or  other  proceeding
involving a director or officer of the Registrant as to which indemnification is
being sought, nor is the Registrant aware of any threatened  litigation that may
result in claims for indemnification by any officer or director.



ITEM 16. EXHIBITS


EXHIBIT
NUMBER        DESCRIPTION OF DOCUMENT

    4.1*      Indenture, dated as of April 8, 1998, between Viatel, Inc. and The
              Bank of New York,  as Trustee,  relating to Viatel,  Inc.'s 12.50%
              Senior  Discount Notes Due 2008  (including  form of 12.50% Senior
              Discount Note) (incorporated herein by reference to Exhibit 4.1 to
              Viatel,  Inc.'s Registration  Statement on Form S-4, filed on July
              10, 1998, Registration No. 333-58921 ("Viatel's 1998 Form S-4")).

    4.2*      Indenture, dated as of April 8, 1998, between Viatel, Inc. and The
              Bank of New York,  as Trustee,  relating to Viatel,  Inc.'s 11.25%
              Senior  Notes  Due 2008  (including  form of 11.25%  Senior  Note)
              (incorporated  herein by reference to Exhibit 4.2 to Viatel's 1998
              Form S-4).

                                      II-2
<PAGE>

   4.3*      Indenture,  dated as of April 8, 1998, among Viatel, Inc., The Bank
             of New York, as Trustee, and Deutsche Bank, Aktiengesellschaft,  as
             German Paying Agent and  Co-Registrar,  relating to Viatel,  Inc.'s
             12.40% Senior  Discount  Notes Due 2008  (including  form of 12.40%
             Senior Discount Note) (incorporated  herein by reference to Exhibit
             4.3 to Viatel's 1998 Form S-4).

   4.4*      Indenture,  dated as of April 8, 1998, among Viatel, Inc., The Bank
             of New York, as Trustee, and Deutsche Bank, Aktiengesellschaft,  as
             German Paying Agent and  Co-Registrar,  relating to Viatel,  Inc.'s
             11.15% Senior Notes Due 2008 (including form of 11.15% Senior Note)
             (incorporated  herein by reference to Exhibit 4.4 to Viatel's  1998
             Form S-4).

   4.5*      Indenture,  dated as of April 8, 1998, among Viatel, Inc., The Bank
             of New York, as Trustee, and Deutsche Bank, Aktiengesellschaft,  as
             German Paying Agent and  Co-Registrar,  relating to Viatel,  Inc.'s
             10% Subordinated Convertible Debentures Due 2011 (including form of
             10% Subordinated  Convertible  Debenture)  (incorporated  herein by
             reference to Exhibit 4.5 to Viatel's 1998 Form S-4).

   4.6*      Conversion Shares  Registration  Rights  Agreement,  dated April 3,
             1998, among Viatel, Inc., Morgan Stanley & Co. Incorporated, Morgan
             Stanley  Bank  AG,   Salomon   Brothers   Inc,  ING  Baring  (U.S.)
             Securities,   Inc.  and  NationsBanc   Montgomery   Securities  LLC
             (incorporated  herein by reference to Exhibit 4.7 to Viatel's  1998
             Form S-4).

   4.7*      Amended and Restated  Certificate of Incorporation of Viatel,  Inc.
             (incorporated  herein by reference to Exhibit  3.1(i)(a) to Viatel,
             Inc.'s  Registration   Statement  on  Form  S-1,  Registration  No.
             333-09699,  filed on August 7, 1996;  Certificate of  Designations,
             Preferences  and  Rights  of 10%  Series A  Redeemable  Convertible
             Preferred Stock, $.01 par value  (incorporated  herein by reference
             to Exhibit  3(i)(b) to  Viatel's  1998 Form  S-4);  Certificate  of
             Amendment to Viatel,  Inc.'s  Amended and Restated  Certificate  of
             Incorporation  (incorporated  herein by reference to Exhibit 4.9 to
             Viatel,  Inc.'s Quarterly Report on Form 10-Q for the quarter ended
             September 30, 1998, File No. 000-21261).

   4.8*      Second Amended and Restated  Bylaws of Viatel,  Inc.  (incorporated
             herein by reference to Exhibit  3(ii) of Viatel,  Inc.'s  Quarterly
             Report on Form 10-Q for the quarter ended  September 30, 1997, File
             No. 000-21261).

   5.1       Opinion  of  Kelley  Drye & Warren  LLP as to the  validity  of the
             securities being registered.


  23.1       Consent of Kelley  Drye & Warren  LLP  (included  in their  opinion
             filed as Exhibit 5.1).

  23.2       Consent of KPMG LLP.

  24         Powers of Attorney (See Signature Page).

- ---------------------------------------

*            Incorporated herein by reference.



ITEM 17. UNDERTAKINGS

(a)          The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement:

                  (i)    To include any prospectus required by Section 10(a)(3)
of the Securities Act of 1933;



                                      II-3
<PAGE>


                  (ii) To reflect in the  prospectus any facts or events arising
after the  effective  date of this  Registration  Statement  (or the most recent
post-effective  amendment  thereof)  which,  individually  or in the  aggregate,
represent a fundamental change in the information set forth in this Registration
Statement.  Notwithstanding the foregoing, any increase or decrease in volume of
securities  offered (if the total dollar value of  securities  offered would not
exceed that which was  registered) and any deviation from the low or high end of
the estimated  maximum offering range may be reflected in the form of prospectus
filed with the  Commission  pursuant  to Rule 424(b) if, in the  aggregate,  the
changes  in volume and price,  represent  no more than 20 percent  change in the
maximum  aggregate  offering price set forth in the "Calculation of Registration
Fee" table in the effective Registration Statement; and

                  (iii) To include any material  information with respect to the
plan of distribution not previously disclosed in this Registration  Statement or
any material change to such information in this Registration Statement.

PROVIDED,  HOWEVER,  that paragraphs (a)(1)(i) and (a)(1)(ii) above do not apply
if the  information  required to be included in a  post-effective  amendment  by
those paragraphs is contained in periodic reports filed with or furnished to the
Commission  by the  Registrant  pursuant  to Section 13 or Section  15(d) of the
Securities  Exchange  Act of 1934,  that are  incorporated  by reference in this
Registration Statement.

         (2) That,  for the  purpose  of  determining  any  liability  under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities at that time shall be deemed to be the initial BONA
FIDE offering thereof.

         (3) To remove from registration by means of a post-effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

(b)       The undersigned registrant hereby undertakes  that, for  purposes  of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable,  each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in this Registration  Statement shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial BONA FIDE offering thereof.

(c)        Insofar  as   indemnification  for  liabilities  arising  under   the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the Registrant  pursuant to the foregoing  provisions,  or otherwise,
the  Registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the Securities  Act of 1933 and is,  therefore,  unenforceable.  In the event
that a claim  for  indemnification  against  such  liabilities  (other  than the
payment by the Registrant of expenses incurred or paid by a director, officer or
controlling  person of the Registrant in the  successful  defense of any action,
suit or proceeding) is asserted by such director,  officer or controlling person
in connection with the securities being registered,  the Registrant will, unless
in the  opinion  of its  counsel  the matter  has been  settled  by  controlling
precedent,  submit to a court of appropriate  jurisdiction  the question whether
such  indemnification  by it is  against  public  policy  as  expressed  in  the
Securities  Act of 1933 and will be governed by the final  adjudication  of such
issue.



                                      II-4
<PAGE>




                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Act, the  Registrant,
Viatel,  Inc.  certifies that it has reasonable grounds to believe that it meets
all of the  requirements  for  filing  on  Form  S-3 and has  duly  caused  this
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly authorized,  in the City of New York, State of New York on this 10th day of
February, 1999.

                                  VIATEL, INC.


                                  By: /S/ MICHAEL J.
                                      MAHONEY
                                      Chairman of the Board, President and Chief
                                      Executive Officer


                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS,  that the persons whose  signatures
appear  below,  constitute  and appoint  Michael J.  Mahoney,  Allan L. Shaw and
Sheldon M. Goldman, and each of them, as their true and lawful attorneys-in-fact
and agents, with full power of substitution and resubstitution,  for them and in
their  names,  places,  steads,  in  any  and  all  capacities,   to  sign  this
Registration  Statement to be filed with the Securities and Exchange  Commission
and  any  and  all  amendments  (including  post-effective  amendments)  to this
Registration Statement, and any subsequent registration statement filed pursuant
to Rule 462 (b) under the  Securities  Act of 1933, as amended,  and to file the
same, with all exhibits  thereto,  and other documents in connection  therewith,
with   the   Securities   and   Exchange   Commission,    granting   unto   said
attorneys-in-fact  and agents,  and each of them, full power and authority to do
and perform each and every act and thing  requisite  and necessary to be done in
connection  therewith,  as fully to all  intents  and  purposes as they might or
could  do  in  person,   thereby   ratifying  and   confirming   all  that  said
attorneys-in-fact  and agents, or any of them, or their or his or her substitute
or substitutes, may lawfully do or cause to be done by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this  Registration  Statement has been signed below by the following  persons in
the capacities indicated on February 10, 1999.

     Signature                                  Title


/S/ MICHAEL J. MAHONEY         Chairman of the Board, President and Chief 
- ----------------------         Executive Officer (Principal Executive Officer)
Michael J. Mahoney

/S/ ALLAN L. SHAW              Senior Vice President, Finance, Chief Financial
- ----------------------         Officer and Director (Principal Financial and
Allan L. Shaw                  Accounting Officer) 

/S/  PAUL G. PIZZANI             Director
- ----------------------
Paul G. Pizzani

/S/  FRANCIS J. MOUNT            Director
- ----------------------
Francis J. Mount

/S/  JOHN G. GRAHAM              Director
- ----------------------
John G. Graham


<PAGE>


                                INDEX TO EXHIBITS


EXHIBIT
NUMBER              DESCRIPTION OF DOCUMENT

   4.1*      Indenture,  dated as of April 8, 1998, between Viatel, Inc. and The
             Bank of New York,  as Trustee,  relating to Viatel,  Inc.'s  12.50%
             Senior  Discount  Notes Due 2008  (including  form of 12.50% Senior
             Discount Note) (incorporated  herein by reference to Exhibit 4.1 to
             Viatel,  Inc.'s  Registration  Statement on Form S-4, filed on July
             10, 1998, Registration No. 333-58921 ("Viatel's 1998 Form S-4")).

   4.2*      Indenture,  dated as of April 8, 1998, between Viatel, Inc. and The
             Bank of New York,  as Trustee,  relating to Viatel,  Inc.'s  11.25%
             Senior  Notes  Due 2008  (including  form of  11.25%  Senior  Note)
             (incorporated  herein by reference to Exhibit 4.2 to Viatel's  1998
             Form S-4).

   4.3*      Indenture,  dated as of April 8, 1998, among Viatel, Inc., The Bank
             of New York, as Trustee, and Deutsche Bank, Aktiengesellschaft,  as
             German Paying Agent and  Co-Registrar,  relating to Viatel,  Inc.'s
             12.40% Senior  Discount  Notes Due 2008  (including  form of 12.40%
             Senior Discount Note) (incorporated  herein by reference to Exhibit
             4.3 to Viatel's 1998 Form S-4).

   4.4*      Indenture,  dated as of April 8, 1998, among Viatel, Inc., The Bank
             of New York, as Trustee, and Deutsche Bank, Aktiengesellschaft,  as
             German Paying Agent and  Co-Registrar,  relating to Viatel,  Inc.'s
             11.15% Senior Notes Due 2008 (including form of 11.15% Senior Note)
             (incorporated  herein by reference to Exhibit 4.4 to Viatel's  1998
             Form S-4).

   4.5*      Indenture, dated as of April 8, 1998, among Viatel, The Bank of New
             York, as Trustee, and Deutsche Bank, Aktiengesellschaft,  as German
             Paying  Agent and  Co-Registrar,  relating  to  Viatel,  Inc.'s 10%
             Subordinated Convertible Debentures Due 2011 (including form of 10%
             Subordinated   Convertible   Debenture)   (incorporated  herein  by
             reference to Exhibit 4.5 to Viatel's 1998 Form S-4).

   4.6*      Conversion Shares  Registration  Rights  Agreement,  dated April 3,
             1998, among Viatel, Inc., Morgan Stanley & Co. Incorporated, Morgan
             Stanley  Bank  AG,   Salomon   Brothers   Inc,  ING  Baring  (U.S.)
             Securities,   Inc.  and  NationsBanc   Montgomery   Securities  LLC
             (incorporated  herein by reference to Exhibit 4.7 to Viatel's  1998
             Form S-4).

   4.7*      Amended and Restated  Certificate of Incorporation of Viatel,  Inc.
             (incorporated  herein by reference to Exhibit  3.1(i)(a) to Viatel,
             Inc.'s  Registration   Statement  on  Form  S-1,  Registration  No.
             333-09699,  filed on August 7, 1996;  Certificate of  Designations,
             Preferences  and  Rights  of 10%  Series A  Redeemable  Convertible
             Preferred Stock, $.01 par value  (incorporated  herein by reference
             to Exhibit  3(i)(b) to  Viatel's  1998 Form  S-4);  Certificate  of
             Amendment to Viatel,  Inc.'s  Amended and Restated  Certificate  of
             Incorporation  (incorporated  herein by reference to Exhibit 4.9 to
             Viatel,  Inc.'s Quarterly Report on Form 10-Q for the quarter ended
             September 30, 1998, File No. 000-21261).

   4.8*      Second Amended and Restated  Bylaws of Viatel,  Inc.  (incorporated
             herein by  reference to Exhibit  3(ii) of Viatel,  Inc.'s Form 10-Q
             for the quarter ended September 30, 1997, File No. 000-21261).

   5.1       Opinion  of  Kelley  Drye & Warren  LLP as to the  validity  of the
             securities being registered.

  23.1       Consent of Kelley  Drye & Warren  LLP  (included  in their  opinion
             filed as Exhibit 5.1).

  23.2       Consent of KPMG LLP.

  24         Powers of Attorney (See Signature Page).



                                                                     EXHIBIT 5.1


                            Kelley Drye & Warren LLP
                                 101 Park Avenue
                            New York, New York 10178


                                                February 11, 1999



Viatel, Inc.
685 Third Avenue
New York, New York 10017


Ladies and Gentlemen:


     We are  acting as  counsel to Viatel,  Inc.,  a Delaware  corporation  (the
"Company"),  in connection  with the  preparation and filing with the Securities
and Exchange  Commission (the "Commission") of a Registration  Statement on Form
S-3 (the "Registration  Statement") under the Securities Act of 1933, as amended
(the "Act").  The  Registration  Statement  relates to  6,824,249  shares of the
Company's Common Stock,  $0.01 par value per share (the "Shares"),  which are to
be issued upon conversion of the Company's 10% Redeemable  Convertible Preferred
Stock,  $0.01  par  value  per  share  (the  "Series  A  Preferred"),   and  10%
Subordinated Convertible Debentures Due 2011(the "Convertible  Debentures",  and
together  with the  Series A  Preferred,  the  "Convertible  Securities")  which
securities were  originally  issued pursuant to exemptions from the Act provided
by Rule 144A or Regulation S.

     In connection  with this  opinion,  we have examined and relied upon copies
certified or otherwise  identified to our  satisfaction of: (i) an executed copy
of  the  Registration  Statement;   (ii)  the  Company's  Amended  and  Restated
Certificate of Incorporation,  as amended, and Amended and Restated By-laws; and
(iii) the  minute  books and  other  records  of  corporate  proceedings  of the
Company,  as made available to us by officers of the Company;  and have reviewed
such matters of law as we have deemed  necessary or appropriate  for the purpose
of rendering this opinion.

     For  purposes  of this  opinion we have  assumed  the  authenticity  of all
documents  submitted  to us as  originals,  the  conformity  to originals of all
documents   submitted  to  us  as  certified  or  photostatic  copies,  and  the
authenticity  of the  originals of all documents  submitted to us as copies.  We
have also assumed the legal capacity of all natural persons,  the genuineness of
all  signatures on all  documents  examined by us, the authority of such persons
signing on behalf of the  parties  thereto  other than the  Company  and the due
authorization,  execution and delivery of all  documents by the parties  thereto
other than the Company.  As to certain factual  matters  material to the opinion
expressed   herein,  we  have  relied  to  the  extent  we  deemed  proper  upon
representations, warranties and statements as to factual matters of officers and
other  representatives of the Company. Our opinion expressed below is subject to
the  qualification  that we express no opinion as to any law other than the laws
of the State of New York,  the  corporate  law of the State of Delaware  and the
federal laws of the United States of America. Without limiting the foregoing, we
express  no  opinion  with  respect  to the  applicability  thereto or effect of
municipal  laws or the rules,  regulations  or orders of any municipal  agencies
within any such state.

     Based upon and subject to the  foregoing  qualifications,  assumptions  and
limitations and the further  limitations set forth below, it is our opinion that
the  Shares to be issued  by the  Company  upon  conversion  of the  Convertible
Securities  have been duly  authorized  and  reserved  for  issuance  and,  when
certificates   for  the  Shares  have  been  duly   executed  by  the   Company,
countersigned by a transfer agent, duly registered by a registrar for the Shares
and issued upon  conversion of the  Convertible  Securities  in accordance  with
their terms, the Shares will be validly issued, fully paid and non-assessable.

     This opinion is limited to the specific  issues  addressed  herein,  and no
opinion may be  inferred or implied  beyond that  expressly  stated  herein.  We
assume no  obligation to revise or  supplement  this opinion  should the present
laws of the State of New York, the corporate law of the State of Delaware or the
federal laws of the United States of America be changed by  legislative  action,
judicial decision or otherwise.
<PAGE>

     We hereby  consent  to the  filing  of this  letter  as an  exhibit  to the
Registration  Statement  and to the  reference  to our  Firm  in the  Prospectus
included therein under the caption "Legal Matters."  In giving such consent,  we
do not admit that we are in the  category of persons  whose  consent is required
under  Section  7 of the Act or the  rules  and  regulations  of the  Commission
promulgated thereunder.

     This  opinion  is  furnished  to you in  connection  with the filing of the
Registration  Statement and is not to be used,  circulated,  quoted or otherwise
relied upon for any other purpose.

                                          Very truly yours,


                                          /s/ KELLEY DRYE & WARREN LLP


                                      2


                                                                    EXHIBIT 23.2

                          INDEPENDENT AUDITORS' CONSENT


The Board of Directors and Stockholders
Viatel, Inc.:

We consent to the use of our reports incorporated herein by reference and to the
reference to our firm under the heading "Experts" in the registration statement.

                                   /s/KPMG LLP

New York, New York
February 11, 1999




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