ITU-T Q.156-1989
Release of International Registers - Specifications of Signalling Systems Nos. 4 and 5 (Study Group XI) 2 pp

Standard No.

ITU-T Q.156-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.156-1989

Scope

furthermore, at the input of the signal receiver, the minimum duration of an interval necessary to ensure the correct functioning of the registration device shall not exceed 30 ms; this includes the release time of the signal receiver and the restoration

ITU-T Q.156-1989 history

• 1989 ITU-T Q.156-1989 Release of International Registers - Specifications of Signalling Systems Nos. 4 and 5 (Study Group XI) 2 pp