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.
Số hiệu tiêu chuẩn
ITU-T G.704
Tên tiêu chuẩn
Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44736 kbit/s hierarchical levels
Ngày phát hành
1998-10-00
Từ khóa
Data transfer * Digital signals * Frame structures * Network interconnection * Synchronous transmission * Telecommunication * Telecommunications * Transmission systems