Hello. Sign In
Standards Store

ITU-T Q.25

1988 Edition, November 1, 1988

Complete Document

SPLITTING ARRANGEMENTS AND SIGNAL RECOGNITION TIMES IN "IN-BAND" SIGNALLING SYSTEMS



Detail Summary

Active, Most Current

EN
Format
Details
Price (USD)
PDF
Single User
$25.00
Print
In Stock
$25.00
PDF + Print
In Stock
$35.00 You save 30%
Add to Cart

Product Details:


Description / Abstract:

General

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.