Method of routing calls for a network of digital time-switched exchanges
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United States of America Patent
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-
May 16, 1989
Grant Date -
N/A
app pub date -
Jan 25, 1988
filing date -
Jan 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of routing calls for a network of digital time-switched exchanges (A, B, C, D, E, F, D) interconnected by groups (18 to 28) of PCM time multiplex trunks, with each group ingterconnecting two exchanges. Each exchange establishes a utilization cost for each of the groups connected thereto. This cost is based on the busy fraction of the least busy trunk in the group of trunks under consideration and it is transmitted to all of the exchanges in the network in order to enable them to determine least cost paths for the calls that they are requested to set up.
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