Arrangement for serving a telephone office code from two switchi

Details Arrangement for serving a telephone office code from two switchi Arrangement for serving a telephone office code from two switchi

1991-06-28

1993-08-17

Dwyer, James L.

Telephonic communications

Plural exchange network or interconnection

With interexchange network routing

379201, 379207, 379210, 379211, 379219, 379230, H04M 700, H04M 342

Patent

active

052376044

ABSTRACT:
This invention relates to a method and apparatus for establishing connections over a public switched telephone network to a customer whose telephone number is in a block associated, for routing purposes, with a first telephone switching system, but who is actually served by a second telephone switching system. The facility for carrying out this method is desirable in order to serve customers who need the advanced functions of a digital switching system, who are currently served by an analog switching system, and do not wish to have their telephone number changed when they switch to being served by the digital switching system. In accordance with the invention, a centralized database is queried to find the identity of the switch serving the called customer. The database returns a routing index for routing the call to that switch.

REFERENCES:
patent: 4191860 (1980-03-01), Weber
patent: 4310727 (1982-01-01), Lawser
patent: 4313035 (1982-01-01), Jordan et al.
patent: 4348554 (1982-09-01), Asmuth
patent: 4611096 (1986-09-01), Asmuth et al.
patent: 4737983 (1988-04-01), Frauenthal et al.
L. J. Gawron et al., "No. 1/1A ESS-SPC Network Capabilities and SignalingArchitecture" The Bell System Technical Journal, vol. 61, No. 7 Sep. 1982, pp. 1611-1636.
Technical Reference TR-TSY-000402, Bellcore, Issue 2, Jul. 1989, Revision 1, May 1991.

Affiliated with

Also associated with

Rating

Arrangement for serving a telephone office code from two switchi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement for serving a telephone office code from two switchi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for serving a telephone office code from two switchi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2250455