Synchronous optical transmission system

US5185736A · kind A · utility

Assignee

• Alcatel NA Network Systems Corp. · US

Inventors

• Raymond E. Tyrrell · Raleigh, US
• O. Lamar Bishop · Raleigh, US
• William E. Powell · Hersbruck, DE
• Dale L. Krisher · Wake Forest, US
• William H. Stephenson, Jr. · Raleigh, US
• M. Rodney Briscoe · Raleigh, US
• Hal Thorne · Knightdale, US
• Claude M. Hurlocker · Raleigh, US
• V. Paul Runyon · Raleigh, US
• Timothy J. Williams · Arcola, US
• Joseph E. Sutherland · Raleigh, US
• William B. Weeber · Apex, US
• Michael J. Gingell · Raleigh, US
• Kenneth J. Stoia · Raleigh, US
• William J. Fox · Raleigh, US
• Jeffrey P. Jones · Raleigh, US
• Richard M. Czerwiec · Raleigh, US
• Ertugrul Baydar · Raleigh, US
• Heinrich T. Sonnenberg · Raleigh, US
• Richard W. Peters · Raleigh, US
• Gus Sanders · Raleigh, US
• Richard J. Sanders, Jr. · Raleigh, US
• Francis G. Noser · Raleigh, US
• Joseph L. Smith · Fuquay-Varina, US
• Jak Yaemsiri · Raleigh, US
• Camille A. Abu-Saba · Clayton, US
• Patrick M. Farrell · Raleigh, US
• Wenkwei Rou · Phoenix, US
• Victor W. Wilkerson · Durham, US
• Mohammad S. Arani · Raleigh, US

Key dates

• Filing date: May 12, 1989
• Grant date: Feb 9, 1993
• Expiry date: May 12, 2009

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04J2203/006
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A synchronous optical transmission system for interfacing SONET formatted channels to lower speed channels in either a SONET format or otherwise. The transmission system incorporates a fiber transmission system, terminal multiplexers and add/drop multiplexers that in turn incorporate a plurality of features, such as parallel scrambling circuitry, frame synchronization circuitry and the like.