Telephonic communications – Plural exchange network or interconnection – Connection call model
Patent
1985-04-26
1987-05-26
Brown, Thomas W.
Telephonic communications
Plural exchange network or interconnection
Connection call model
379113, 379230, H04M 336, H04M 706
Patent
active
046691138
ABSTRACT:
A nonhierarchial switching system employing a modified unified algorithm for developing link sizes for paths that connect switches in the system and routing sequences for the switches in the system, and further employing means for updating the routing sequences to minimize potential blocking in the network. In one embodiment, the modified unified algorithm develops improved link size determinations by taking advantage of traffic sensitive dynamic routing on the alternate paths available in the nonhierarchial switching system for connecting any switch to any other switch in the system. Updating of the routing sequences is achieved in that embodiment by evaluating the least loaded path for each potential connection of two switches in the system and, when appropriate, by installing the least loaded path as the second choice path in the routing sequence for that potential connection.
REFERENCES:
patent: 4284852 (1981-08-01), Szybicki et al.
patent: 4345116 (1982-08-01), Ash et al.
"Sequential Routing Optimization for Circuit Switched Networks", A. Girard et al, IEEE Trans. on Commun., vol. COM-2, No. 12, Dec. 1984, pp. 1234-1242.
G. R. Ash et al., "Servicing and Real-Time Control of Networks with a Dynamic Routing", The Bell System Technical Journal, vol. 60, No. 8 (Oct. 1981), 1821-1846.
G. R. Ash et al., "Design and Optimization of Networks with Dynamic Routing", Bell System Technical Journal, vol. 60, No. 8 (Oct. 1981), pp. 1787-1820.
C. A. Dahlbom et al., "History and Description of a New Signaling System", The Bell System Technical Journal, vol. 57, No. 2 (Feb. 1978) pp. 225-250.
Ash Gerald R.
Oliver Billy B.
AT&T Bell Laboratories
AT&T Communications
AT&T Company
Brendzel Henry T.
Brown Thomas W.
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