Multiplex communications – Wide area network – Packet switching
Patent
1985-09-13
1989-07-18
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
379114, H04J 312
Patent
active
048499714
ABSTRACT:
A call completion analysis system may be coupled to monitor any of many different kinds of telephone transmission equipment which may use any of a great variety of different kinds of signaling methods. At least one of the monitored equipments being a T-type carrier having a plurality of channels. The system receives and analyzes the variety of signals, including signals on any selected ones or all of the T-type carrier channels. At least some of the analyzed signals relate to call initiation, dial digits, duration, call completion and call abandonment conditions. The system gives both machine and human supervision and read out of the analyzed signals. Calls automatically forwarded to common carriers are monitored to insure correct billing by the office furnishing service to the call.
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Bell System Transmission Engineering; "Digital Channel Bank Requirements and Objectives"; Nov. 1982, pp. 1-40.
Chiodras Peter J.
Harrison John M.
Karras Ernest
Olms Douglas W.
Scutch III Frank M.
Tekno Industries, Inc.
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