Patent ID: 7602701
Filing Date: 2009-10-13
Classification: H04J,H04L

Abstract:
1. A WideBand cross-connect system comprising: at least one SONET add/drop multiplexer being outfitted to support SONET unidirectional, path-switched rings protection with Payload Defect Indicator-Path codes; a working WideBand switch fabric coupled to said at least one SONET add/drop multiplexer, said working switch fabric receiving a working signal from a first interface on said at least one SONET add/drop multiplexer, said working switch fabric switching said working signal to generate a working switched signal, monitoring for equipment failures that affect the working signal and to generate a working Payload Defect Indicator-Path code in response to monitoring for equipment failures and working switched payload, and providing said working switched signal to a second port on said at least one SONET add/drop multiplexer; a protect WideBand switch fabric coupled to said at least one SONET add/drop multiplexer, said protect switch fabric receiving a protect signal from a third interface on said at least one SONET add/drop multiplexer, said protect switch fabric monitoring for equipment failures that affect the protect signal and switching said protect signal to generate a protect switched signal and to generate a protect Payload Defect Indicator-Path code in response to monitoring for equipment failures and protect switched payload, and providing said protect switched signal to a fourth port on said at least one SONET add/drop multiplexer; wherein said at least one SONET add/drop multiplexer operates as an input/output interface to the working and protect WideBand switch fabrics and selects between said working switched payload and said protect switched payload to send to a client based upon said working Payload Defect Indicator-Path code And said protect Payload Defect Indicator-Path code.