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ITU-T Q.50

Signalling between Circuit Multiplication Equipment (CME) and International Switching Centres (ISC)

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Organization: ITU-T
Publication Date: 1 July 2001
Status: active
Page Count: 28
scope:

Introduction

This Recommendation contains principles and examples of signalling between the International Switching Centre (ISC) (exchanges) (see Note) and their associated circuit multiplication equipments.

Circuit multiplication equipments may have integral echo control and A/μ law converter functions. The information in this Recommendation is compatible with the control procedures for such devices.

NOTE - As Circuit Multiplication Equipment may also be used in national networks, the signalling described here could not only be used in International Switching Centres but also in national exchanges.

Document History

ITU-T Q.50
August 24, 2006
Signalling between Circuit Multiplication Equipment (CME) and International Switching Centres (ISC)
A description is not available for this item.
ITU-T Q.50
July 1, 2001
Signalling between Circuit Multiplication Equipment (CME) and International Switching Centres (ISC)
Introduction This Recommendation contains principles and examples of signalling between the International Switching Centre (ISC) (exchanges) (see Note) and their associated circuit multiplication...
Q.50
June 1, 1997
Signalling between Circuit Multiplication Equipments (CME) and International Switching Centres (ISC) - Series Q: Switching and Signalling International Automatic and Semi-Automatic Working - Signalling for Circuit Multiplication Equipment
A description is not available for this item.
Q.50
January 1, 1993
Signalling between Circuit Multiplication Equipments (CME) and International Switching Centres (ISC) - General Recommendations on Telephone Switching and Signalling - International Semi- Automatic and Automatic Working
A description is not available for this item.
Q.50
January 1, 1989
Signalling between Circuit Multiplication Equipments (CME) and International Switching Centres (ISC) - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements
A description is not available for this item.

References

This document references:
ITU-T Q.33 - PROTECTION AGAINST THE EFFECTS OF FAULTY TRANSMISSION ON GROUPS OF CIRCUITS
Published by ITU-T on November 1, 1988
General Although certain signalling systems may have the capability to provide an indication when an individual circuit is faulty, in order to maintain the required availability of the public...
This document references:
ITU-T G.704 - Synchronous Frame Structures Used at 1544, 6312, 2048, 8448 and 44 736 kbit/s Hierarchical Levels - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - General
Published by ITU-T on October 1, 1998
A description is not available for this item.
This document references:
ITU-T G.703 - Physical/electrical characteristics of hierarchical digital interfaces
Published by ITU-T on April 1, 2016
This Recommendation provides the recommended physical and electrical characteristics of the interfaces at hierarchical bit rates as described in [ITU-T G.702] (PDH) and [ITU-T G.707] (SDH), to enable...
This document references:
ITU-T G.763 - Digital Circuit Multiplication Equipment Using G.726 ADPCM and Digital Speech Interpolation - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - Principal Characteristics of Transcoder and Digital Multiplication Equipment
Published by ITU-T on October 1, 1998
A description is not available for this item.
This document references:
ITU-T G.767 - Digital Circuit Multiplication Equipment Using 16 kbit/s LD-CELP, Digital Speech Interpolation and Facsimile Demodulation/Remodulation - Series G: Transmission Systems and Media, Digital Systems and Networks - Digital Transmission Systems - Terminal Equipments - Principle Characteristics of Transcoder and Digital Multiplication Equipment
Published by ITU-T on October 1, 1998
A description is not available for this item.
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