Telecommunication switching systems with a central switching and

Details Telecommunication switching systems with a central switching and Telecommunication switching systems with a central switching and

1988-05-23

1989-08-01

Dwyer, James L.

Telephonic communications

Centralized switching system

Switching controlled in response to called station...

370 16, H04M 300

Patent

active

048539570

ABSTRACT:
A circuit arrangement, with a doubled central switching matrix to which two line trunk groups having a sub-switching matrix each and a group control unit each, are allocated to each other in pairs via two PCM-lines. The line facilities which are individually allocated to the one and the other of the two line trunk groups and which are connected to the sub-switching matrix of their own respective line trunk group during normal service, are switchable during emergency service of one of the two line trunk groups to the sub-switching matrix of the respective other line trunk group. In order that no interconnected calls are interrupted, each local control unit stores the call data of all interconnected calls during normal service. A prepared change-over signal blocks all call-establishing requests and implements the transmission of the call data to the respective associated line trunk group on the basis of which the appertaining calls are interconnected within the sub-switching matrix and respective associated line trunk group, and thus prepared for a change-over.

REFERENCES:
patent: 4499461 (1985-02-01), Schneider
patent: 4700381 (1987-10-01), Eher

Affiliated with

Also associated with

Rating

Telecommunication switching systems with a central switching and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Telecommunication switching systems with a central switching and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telecommunication switching systems with a central switching and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-137562