Telephonic communications – With usage measurement – Call traffic recording by computer or control processor
Patent
1995-05-16
1996-09-10
Chin, Stephen
Telephonic communications
With usage measurement
Call traffic recording by computer or control processor
379 34, 379111, 379113, 379114, 379133, 379134, H04M 322, H04M 1500
Patent
active
055552951
ABSTRACT:
A system for service control and operations for a telecommunications network. In particular, an architecture and method for a service control and operations element system. The system communicates with a plurality of interconnected telecommunications network elements via a switching and signaling subsystem. The system provides and controls the functions of the telecommunications network, including a method of measuring delay between the time a customer dials a phone number of a called party and the time the customer hears a ringback tone indicating that the called party was alerted to the call, a method of synchronizing clocks located at individual network elements with a centralized time source, and a method of time-of-day clock surveillance.
REFERENCES:
patent: 4959849 (1990-09-01), Bhusri
patent: 5214688 (1993-05-01), Szlam
patent: 5260986 (1993-11-01), Pershan
patent: 5327490 (1994-07-01), Cave
patent: 5404400 (1995-04-01), Hamilton
AT&T Corp.
Chin Stephen
Shankar Vijay
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