ITU-T Q.25-1989
Splitting Arrangements and Signal Recognition Times in"In-Band" Signalling Systems - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 3 pp

Standard No.

ITU-T Q.25-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.25-1989

Scope

from the national signalling system into an international signalling system (protection of the international system);

ITU-T Q.25-1989 history

• 1989 ITU-T Q.25-1989 Splitting Arrangements and Signal Recognition Times in"In-Band" Signalling Systems - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 3 pp