ITU-T Q.430-1988
Line Signalling, Digital Version - Conversion between Analogue and Digital Versions of System R2 Line Signalling - Specifications of Signalling Systems R1 and R2 (Study Group XI) 21 pp

Standard No.

ITU-T Q.430-1988

Release Date

1988

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.430-1988

Scope

When the signalling equipment is a part of a digital exchange, it may receive alarm indications in a form other than both signalling bits in state one. The failure may be detected by the signalling equipment or an indication be received from the PCM termi

ITU-T Q.430-1988 history

• 1988 ITU-T Q.430-1988 Line Signalling, Digital Version - Conversion between Analogue and Digital Versions of System R2 Line Signalling - Specifications of Signalling Systems R1 and R2 (Study Group XI) 21 pp