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G.704 - E1/T1的帧格式
This Recommendation gives functional characteristics of interfaces associated with:
– network nodes, in particular, synchronous digital multiplex equipment and digital exchanges
in IDNs for telephony and ISDNs; and
– PCM multiplexing equipment.
Clause 2 deals with basic frame structures, including details of frame length, frame alignment
signals, Cyclic Redundancy Check (CRC) procedures and other basic information.
Clauses 3 to 6 contain more specific information about how certain channels at 64 kbit/s and at other
bit rates are accommodated within the basic frame structures described in clause 2.
2011-03-06
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