Telephonic communications – Plural exchange network or interconnection – Connection call model
Patent
1991-12-30
1995-02-14
Dwyer, James L.
Telephonic communications
Plural exchange network or interconnection
Connection call model
379207, 379230, 370 601, 3701101, H04M 700, H04M 342, H04Q 1104, H04J 312
Patent
active
053902424
ABSTRACT:
Routing calls using a new protocol message which is a redirect message in a telecommunication system having a number of switching nodes to avoid circular paths among the switching nodes and for rerouting calls in the event of failures or overload conditions. During the establishment of a call from an originating switching node to a destination switching node where the call path has already been setup from the originating switching node through an intermediate switching node, a switching node is responsive to a setup message from the intermediate switching node requesting extension of the call path through the switching node to determine if such an extension would create a circular path. If circular path would be created, the switching node redirects the call (by using the redirect message) back to the intermediate switching node and indicates in that message to which switching node the call path should be extended. In response to the redirect message, the intermediate switching node reroutes the call path. Further, the redirect message entirely removes the call path between the switching node and intermediate switching node.
REFERENCES:
patent: 4878216 (1989-10-01), Yunoki
patent: 4896319 (1990-01-01), Lidinsky et al.
patent: 4899333 (1990-02-01), Roediger
patent: 4988209 (1991-01-01), Davidson et al.
patent: 5001710 (1991-03-01), Gawrys et al.
patent: 5012512 (1991-04-01), Basso et al.
patent: 5014262 (1991-05-01), Harshavardhana
patent: 5014266 (1991-05-01), Bales et al.
patent: 5016243 (1991-05-01), Fite, Jr.
patent: 5023780 (1991-06-01), Brearley
patent: 5023868 (1991-06-01), Davidson et al.
patent: 5036535 (1991-07-01), Gechter et al.
patent: 5051992 (1991-09-01), Taniguchi et al.
patent: 5062103 (1991-10-01), Davidson et al.
patent: 5253288 (1993-10-01), Frey et al.
patent: 5255315 (1993-10-01), Bushnell
Bales Bruce M.
Crumpley Robert L.
North Sandra S.
Thieler Stephen M.
AT&T Corp.
Dwyer James L.
Hong Harry S.
Moran John C.
LandOfFree
Rerouting in a distributed telecommunication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rerouting in a distributed telecommunication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rerouting in a distributed telecommunication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-293719