US Patent No: 5,444,773
Number of patents in Portfolio can not be more than 2000
Method for releasing unnecessary trucks from a telephone call
Stats
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Aug 22, 1995
Issued date -
Jun 30, 1993
filing date -
08/083,525
serial no -
In Force
status
Importance
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Abstract
A method for recognizing and releasing unnecessary trunk lines in a private branch exchange telephone system including a plurality of switching nodes, each having a unique node identification number where each pair of nodes is connected by a plurality of trunk lines, includes steps for (a) compiling a telephone call identifier list containing node identification numbers and an associated trunk call identification number used in defining and connecting a call path between a calling party and a called party, (b) examining a call identifier list at each of the switching nodes for information indicative of redundant node identification numbers, and (c) releasing the unnecessary trunk lines between the redundant node identification numbers.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,398,063 Mobile telephone interoffice handoff limiting method and apparatus | 54 | 1980 | |
| 4,345,116 Dynamic, non-hierarchical arrangement for routing traffic | 75 | 1980 | |
| 4,896,350 Arrangement for providing a call-connection service | 14 | 1989 | |
| 5,014,262 Apparatus and method for detecting and eliminating call looping in a node-by-node routing network | 106 | 1990 | |
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| 5,101,451 Real-time network routing | 60 | 1990 | |
| 5,058,105 Network alternate routing arrangement | 67 | 1990 | |
| 5,018,187 Mobile telephone intrasystem and intersystem enhanced handoff method and apparatus for limiting trunk switching connections | 24 | 1990 | |
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| 5,319,640 Transmitting/receiving system having digital switching network | 13 | 1993 | |
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| 5,018,194 Electronic switching system having call-forwarding function | 23 | 1989 | |
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| 4,873,517 Method for selecting least weight end node to end node route in a data communications network | 72 | 1988 | |
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| 5,212,691 Private network with means for establishing virtual tie trunks between PBXS through ISDN public network | 49 | 1991 | |
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| 4,991,204 Adaptive routing control method | 161 | 1989 | |
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| 4,788,721 Routing of network traffic | 79 | 1987 | |
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| 5,142,570 Routing of network traffic using discrete traffic measurement data | 62 | 1990 | |
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| 4,293,735 Nodal structure switching network | 9 | 1979 | |
| 4,756,019 Traffic routing and automatic network management system for telecommunication networks | 67 | 1986 | |