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ITU-T G.954

1988 Edition, November 1, 1988

Complete Document

DIGITAL LINE SYSTEMS BASED ON THE 2048 kbit/s HIERARCHY ON COAXIAL PAIR CABLES



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Description / Abstract:

General

This Recommendation covers digital line systems for the transmission of signals based on the 2048 kbit/s hierarchy on coaxial pair cables and includes systems conveying the following bit rates:

8 448 kbit/s

34 368 kbit/s

139 264 kbit/s

4 x 139 264 kbit/s

In the case of 4 x 139264 kbit/s systems, a digital line muldex equipment combines the functions of multiplexing four digital signals at 139 264 kbit/s and of a line transmission equipment. Details of the digital multiplexing strategy are given in Annex B to this Recommendation.

The requirements for overall performance and interfaces of the corresponding digital line section are given in Recommendation G.921.