Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Patent
1996-10-07
1998-09-08
Hunter, Daniel S.
Telephonic communications
Plural exchange network or interconnection
With interexchange network routing
379220, 379219, 379221, 379225, 379269, 370396, H04M 700, H04M 300, H04L 1228
Patent
active
058056904
ABSTRACT:
A method of Distributed Call Control is provided in a Distributed Transit Private Branch Exchange (PBX) comprising a plurality of Nodes forming a wide area network, and a plurality of D-channel Server Modules (DSMs). The DSMs are located in predetermined ones of the Nodes with each DSM coupled to at least one associated PBX via at least one D channel. The method includes the following steps. First, a listing of all Exchange Codes (ECs) handled by a DSM and each associated PBX coupled thereto is stored in a local routing table of a memory in the DSM. Second, a listing of all ECs handled by all of the other DSMs of the Distributed Transit PBX and their associated PBXs is stored in a remote routing table of the memory in each of the DSMs. Third, upon receiving a call request and an Exchange Code (EC) for a called PBX at a DSM from an associated calling PBX, determining at the DSM if the EC is found on the local routing table, and routing call back to the associated called PBX when a the EC is found on the local routing table. Fourth, determining if the received EC is found on the remote routing table for a remote DSM when the EC is not found on the local routing table. When the EC is found in the remote routing table, the call is routed to a remote DSM which routes the call to the called PBX.
REFERENCES:
patent: 4317962 (1982-03-01), Cox et al.
patent: 4719952 (1988-01-01), Kobayashi
patent: 4720854 (1988-01-01), sand
patent: 4896350 (1990-01-01), Bicknell et al.
patent: 4924500 (1990-05-01), lewis et al.
patent: 5042064 (1991-08-01), Chung et al.
patent: 5119415 (1992-06-01), Aoyama
patent: 5212691 (1993-05-01), Hokari
patent: 5255264 (1993-10-01), Cotton et al.
patent: 5317633 (1994-05-01), Hiraiwa
patent: 5375167 (1994-12-01), Bales et al.
patent: 5422943 (1995-06-01), Cooney et al.
patent: 5446732 (1995-08-01), Miyamoto
patent: 5450482 (1995-09-01), Chen et al.
patent: 5487110 (1996-01-01), Bray
patent: 5555298 (1996-09-01), Jonsson
Balasubramanian Adoor V.
Koepper Richard
Hunter Daniel S.
Ostroff Irwin
Pfeifle Erwin W.
Tieli Benny Q.
Timeplex, Inc.
LandOfFree
Method of distributed call control in a distributed transit PBX does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of distributed call control in a distributed transit PBX , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of distributed call control in a distributed transit PBX will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1291463