SIS SS 63 63 47-1991
Telecommunications equipment — Private Branch Exchanges (PBXs) — Signalling requirements in analogue interface for ex- change line with direct dialling-in service

Standard No.

SIS SS 63 63 47-1991

Release Date

1991

Published By

SE-SIS

Latest

SIS SS 63 63 47-1991

SIS SS 63 63 47-1991 history

• 1991 SIS SS 63 63 47-1991 Telecommunications equipment — Private Branch Exchanges (PBXs) — Signalling requirements in analogue interface for ex- change line with direct dialling-in service