<PAGE>
As filed with the Securities and Exchange Commission on September 17,1997
Registration No. 333-20659
================================================================================
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
POST-EFFECTIVE AMENDMENT NO. 1
TO
FORM S-8
REGISTRATION STATEMENT UNDER
THE SECURITIES ACT OF 1933
CASCADE COMMUNICATIONS CORP.
(Exact name of registrant as specified in its charter)
DELAWARE 04-3099677
(State or other jurisdiction of (I.R.S. Employer
incorporation or organization) Identification No.)
5 CARLISLE ROAD, WESTFORD, MASSACHUSETTS 01886-3600 (508) 692-2600
(Address, including zip code, and telephone number, including area code,
of Registrant's principal executive offices)
________________________
DANIEL E. SMITH
PRESIDENT AND CHIEF EXECUTIVE OFFICER
5 CARLISLE ROAD
WESTFORD, MASSACHUSETTS 01866-3601
(Name and address of agent for service of process)
(508) 692-2600
(Telephone number, including area code, of agent for service)
________________________
Copy to:
THOMAS W. FURLONG, ESQ.
GRAY CARY WARE & FREIDENRICH
A PROFESSIONAL CORPORATION
400 HAMILTON AVENUE
PALO ALTO, CALIFORNIA 94301
(650) 328-6561
<PAGE>
DEREGISTRATION OF SHARES
Pursuant to Registration Statement No. 333-20659 on Form S-8 (the
"Registration Statement"), Cascade Communications Corp., a Delaware corporation
(the "Company"), registered 390,766 shares of its Common Stock, $0.001 par value
per share ("Common Stock"), issuable under the Sahara Networks, Inc. 1995 Stock
Plan (the "Plan"). The Company hereby removes from registration under the
Registration Statement all of the shares of Common Stock which remain unissued
in connection with the Plan.
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the
Company certifies that it has reasonable grounds to believe that it meets all
the requirements for filing on Form S-8 and has duly caused this Post-
Effective Amendment No. 1 to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in Alameda, California
on September 16, 1997.
CASCADE COMMUNICATIONS CORP.
By: /s/ Robert K. Dahl
-----------------------------
Robert K. Dahl
Vice President and Chief
Financial Officer
Pursuant to the requirements of the Securities Act of 1933, as amended,
this Post-Effective Amendment No. 1 to the Registration Statement has been
signed below by the following persons in the capacities indicated on
September 16, 1997.
<TABLE>
<CAPTION>
Signature Title
<S> <C>
Daniel E. Smith* President, Chief Executive Officer and
- ------------------------------------------- Director (Principal Executive Officer)
Daniel E. Smith
/s/ Robert K. Dahl Vice President, Chief Financial
- ------------------------------------------- Officer (Principal Financial and
Robert K. Dahl Accounting Officer) and Director
/s/ Michael J. Johnson Vice President, Assistant Secretary
- ------------------------------------------- and Director
Michael J. Johnson
Victoria A. Brown* Director
- -------------------------------------------
Victoria A. Brown
Richard M. Burnes, Jr.* Director
- -------------------------------------------
Richard M. Burnes, Jr.
</TABLE>
2
<PAGE>
<TABLE>
<CAPTION>
Signature Title
<S> <C>
/s/ Mory Ejabat Director
- -------------------------------------------
Mory Ejabat
Paul J. Ferri* Director
- -------------------------------------------
Paul J. Ferri
/s/ Anthony Stagno Director
- -------------------------------------------
Anthony Stagno
/s/ Jeanette Symons Director
- -------------------------------------------
Jeanette Symons
Steven C. Walske* Director
- -------------------------------------------
Steven C. Walske
*By: /s/ Frances M. Jewels
--------------------------------------
Frances M. Jewels
Attorney-in-Fact
</TABLE>
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