ITU-T Q.821-1993
(WITHDRAWN) Stage 2 and Stage 3 Description for the Q3 Interface - Alarm Surveillance - Specifications of Signalling System No. 7 Q3 Interface (Study Group XI) 50 pp

Standard No.

ITU-T Q.821-1993

Release Date

1993

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Replace By

ITU-T Q.821-2000

Latest

ITU-T Q.821-2000

Scope

(WITHDRAWN) Stage 2 and Stage 3 Description for the Q3 Interface - Alarm Surveillance - Specifications of Signalling System No. 7 Q3 Interface (Study Group XI) 50 pp

ITU-T Q.821-1993 history

• 2000 ITU-T Q.821-2000 Stage 2 and Stage 3 Description for the Q3 Interface - Alarm Surveillance Series Q: Switching and Signalling Q3 Interface Study Group 4
• 1993 ITU-T Q.821-1993 (WITHDRAWN) Stage 2 and Stage 3 Description for the Q3 Interface - Alarm Surveillance - Specifications of Signalling System No. 7 Q3 Interface (Study Group XI) 50 pp