ITU-T Q.28-1989
Determination of the Moment of the Called Subscriber's Answer in the Automatic Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp

Standard No.

ITU-T Q.28-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.28-1989

Scope

Determination of the Moment of the Called Subscriber's Answer in the Automatic Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp

ITU-T Q.28-1989 history

• 1989 ITU-T Q.28-1989 Determination of the Moment of the Called Subscriber's Answer in the Automatic Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp