1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Series GTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 28(10/1984) SERIES G: DIGITAL NETWORKS Transmission systems and multiplexing equipment Application of transmultiplexers, FDM codecs, data-in-voice (DIV) systems and data-over-voice (DOV) s
2、ystems during the transition from an analogue to a digital network ITU-T G-series Recommendations Supplement 28 Originally published in Red Book (1984) - Fascicle III.3 NOTES 1 Supplement 28 to the G-series Recommendations was approved in Mlaga-Torremolinos (1984) and published in Fascicle III.3 of
3、the Red Book. This file is an extract from the Red Book. While the presentation and layout of the text might be slightly different from the Red Book version, the contents of the file are identical to the Red Book version and copyright conditions remain unchanged (see below). 2 In this Supplement, th
4、e expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. ITU 2004 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Geneva, 2004
