ITU-T Q.9-1989
Vocabulary of Switching and Signalling Terms - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 82 pp

Standard No.

ITU-T Q.9-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.9-1989

Scope

General terms and definitions as shown in 0 O have in many cases not been elaborated by Study Group XI. However, they need to be used in certain definitions for which the Study Group is responsible. A cross-reference to the source is given wherever possib

ITU-T Q.9-1989 history

• 1989 ITU-T Q.9-1989 Vocabulary of Switching and Signalling Terms - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 82 pp