This supplement expands the range of sub STS-1 interfaces to include payloads that are multiples of the VT Group. Specifically, sub STS-1 payloads of N x VT Group shall be allowed with N = 1-5, inclusive. The same single column of Line overhead is used r
ANSI T1.105.07a-1997 history
1997ANSI T1.105.07a-1997 Synchronous Optical Network (SONET) - Sub STS-1 Interface Rates and Formats Specification (inclusion of N x VT Group Interfaces)