ITU-T Q.542-1989
Digital Exchange Design Objectives - Operations and Maintenance - Digital Local Transit Combined and International Exchanges in Integrated Digital Networks and Mixed Analogue-Digital Networks - Supplements (Study Group XI) 21 pp

Standard No.

ITU-T Q.542-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Latest

ITU-T Q.542-1989

Scope

This Recommendation applies to digital local, combined, transit and international exchanges for telephony in Integrated Digital Networks (IDN) and mixed (analogue/digital) networks, and also to local, combined, transit and international exchanges in an In

ITU-T Q.542-1989 history

• 1989 ITU-T Q.542-1989 Digital Exchange Design Objectives - Operations and Maintenance - Digital Local Transit Combined and International Exchanges in Integrated Digital Networks and Mixed Analogue-Digital Networks - Supplements (Study Group XI) 21 pp