T1 line format for robbed signaling for use with ccitt 32k...

Details T1 line format for robbed signaling for use with ccitt 32k... T1 line format for robbed signaling for use with ccitt 32k...

H - Electricity

04

J

344/25

H04J 3/12 (2006.01) H04Q 3/00 (2006.01)

Patent

CA 1285053

T1 LINE FORMAT FOR ROBBED SIGNALING FOR USE WITH CCITT 32K BIT PER SECOND ADPCM CLEAR CHANNEL TRANSMISSION ABSTRACT OF THE INVENTION This invention provides for uniformly distributing signaling data in a T1 line format for unrestricted 32 kb/s and 64 kb/s transmission channels. This scheme provides for placing a portion signaling information within each frame of a T1 transmission. Digital switching systems may process this signaling information more uniformly, instead of receiving 24 channels of signaling information during one T1 frame. The signaling information provides the digital switching system with indications of such supervisory functions as on-hook, off-hook and switching digits.

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