ITU-T Q.25 FRENCH-1988
"SPLITTING ARRANGEMENTS AND SIGNAL RECOGNITION TIMES IN""IN-BAND"" SIGNALLING SYSTEMS"

Standard No.

ITU-T Q.25 FRENCH-1988

Release Date

1988

Published By

International Telecommunication Union (ITU)

Latest

ITU-T Q.25 FRENCH-1988

Scope

In each "in-band" signalling system precautions should be taken so that, when the signalling in that system is taking place: no interference in the voice-frequency range from outside the system can pass into the system (i.e. into the transmission path between the sending end and the receiving end of the voice-frequency signals), and as far as possible, no signalling current used in the system can pass into other systems, connected in tandem.

ITU-T Q.25 FRENCH-1988 history

• 1988 ITU-T Q.25 FRENCH-1988 "SPLITTING ARRANGEMENTS AND SIGNAL RECOGNITION TIMES IN""IN-BAND"" SIGNALLING SYSTEMS"