Telephonic communications – Plural exchange network or interconnection – Connection call model
Patent
1988-07-15
1989-12-05
Dwyer, James L.
Telephonic communications
Plural exchange network or interconnection
Connection call model
379209, H04M 700
Patent
active
048857807
ABSTRACT:
A method for setting up calls in a telecommunications network is disclosed. A call arrives at originating switch A for destination switch B. An attempt is made at switch A to allocate a trunk from the direct trunk group between A and B. If a trunk is available the call is set up. If a trunk is not available (i.e. the trunk group is completely busy) the call is queued for up to Tq seconds to wait for a trunk in the direct trunk group to be released. If a trunk is released, the queue is served in first-come, first-served order, i.e. the call at the head of the queue is set up. When a call has waited in the queue for Tq seconds without obtaining a direct trunk, an attempt is made at switch A to set up the call on an alternate route. The inventive call set-up method provides for operation of a network in which delay is traded off for reduced blocking probability or to carry a relatively small number of customer-specified high priority calls with almost zero blocking probability.
REFERENCES:
patent: 4163124 (1979-07-01), Jolissaint
"Design and Optimization of Networks with Dynamic Routing", G. R. Ash et al., The Bell System Technical Journal, vol. 60, No. 8. pp. 1788-1820, Oct. 1981.
"Use of a Trunk Status Map for Real Time DNHR", G. R. Ash, Proc. Eleventh Int. Teletraffic Congress, Kyoto, pp. 795-801, Sep. 1985.
"Stablization of Alternate Routing Networks", R. S. Krupp, IEEE International Communications Conference, Philadelphia, pp. 31.2.1-31.2.5. 1982.
"On a Delay-Loss System for Overload Protection", R. G. Scehrer, Tenth International Teletraffic Congress Montreal, Session 5.2, paper #8, 1983.
"Performance Evaluation of Private Networks with Automatic Route Selection and Call Queuing," A. Girard et al., Proc. Eleventh International Teletraffic Congress, Kyoto, Session 2.1, paper #4, 1985.
Gopal Gita
Weinrib Abel
Bell Communications Research Inc.
Dwyer James L.
Falk James W.
LandOfFree
Method for call routing in a network 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 for call routing in a network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for call routing in a network will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2039280