Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent
1995-01-25
1997-01-07
Chin, Wellington
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
379 10, 379 15, 370250, 370252, H04M 124, H04J 116, H04J 100
Patent
active
055925308
ABSTRACT:
A system is provided for monitoring the operations of a mated pair of switching nodes in a telephone network. A first monitor is provided which is operable to capture data on all of the connection links of a first switching node of the mated pair. A second monitor is provided which is operable to capture data on all of the connection links of a second switching node of the mated pair. The first and second monitors capture selected telephone switching messages on the links of the mated pair. Each monitor compiles either a primary or secondary record of switching messages pertaining to a particular call or transaction being routed by the mated pair of switching nodes. The primary record is maintained by the monitor which detects the first message which initiates a particular call or transaction. Subsequent messages pertaining to that call or transaction that are captured by the other monitor are compiled in a secondary record. At the completion of the call or transaction, selected messages stored in the secondary call record are transferred to the monitor containing the primary record by means of a communications bus connecting the two monitors. The composite record is then analyzed by the monitor containing the primary record to evaluate the performance of the telephone switch and to perform other tasks, such as calling card fraud detection and service assurance applications.
REFERENCES:
patent: 5426688 (1995-06-01), Anand
patent: 5457729 (1995-10-01), Hamann et al.
patent: 5473596 (1995-12-01), Garafola et al.
patent: 5475732 (1995-12-01), Pester, III
patent: 5521902 (1996-05-01), Ferguson
patent: 5539804 (1996-07-01), Hong et al.
Ayers John I.
Brockman Pierce E.
Ruwaldt Gary S.
Chin Wellington
Inet, Inc.
Loomis Paul
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