SummaryThis Recommendation provides the requirements for the STM-N signals at the network node interface of a synchronous digital network, including B-ISDN in terms of: – bit rates; – frames structures; – formats for mapping and multiplexing of client signals (e.g., PDH, ATM and Ethernet) elements; – functionalities of the overheads. Revision 7.0 of ITU-T Recommendation G.707/Y.1322 is based on: • revision 6.0 approved 2003-12-14; • Corrigendum 1 approved 2004-06-13; • Amendment 1 approved 2004-08-22; • Corrigendum 2 approved 2005-08-22; and • editorial (non-technical) corrections. Amendment 1 provides a reciprocal linkage from the SDH Recommendation to the G-PON Recommendation G.984.3, and explains how the G-PON encapsulation method (GEM) transport of SDH signals fits into the multiplexing hierarchy.
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