Patent ID: 7630397
Filing Date: 2009-12-08
Classification: H04J

Abstract:
1. An apparatus for extracting data from virtually concatenated (VCAT) plesiochronous digital hierarchy (PDH) streams carried in a synchronous digital hierarchy (SDH) signal, comprising: an SDH overhead and pointer processor coupled to a SONET network; a first telecom bus coupled to said SDH overhead and pointer processor; a second telecom bus coupled to an SDH VCAT demapper; a plurality of PDH units coupled between said first telecom bus and said second telecom bus, said plurality of PDH units providing PDH demapping and PDH frame synchronization according to a gapped clock produced by said PDH demapping to generate at least one serialized bit stream as well as providing serial to parallel conversion of said at least one serialized bit stream into bytes for supply to said second telecom bus; a signal path connecting said first telecom bus and said second telecom bus, said signal path distinct from said plurality of PDH units; and a configuration block for selectively controlling operation of said SDH VCAT demapper in one of a first mode and second mode, wherein wherein said SDH VCAT demapper deskews members of a virtual concatenated group (VCG) associated with frames containing virtual concatenation link capacity adjustment scheme information (VLI) by