Detecting high usage telecommunications lines

Details Detecting high usage telecommunications lines Detecting high usage telecommunications lines

1997-01-23

1999-05-18

Chang, Vivian

Telephonic communications

With usage measurement

Call charge metering or monitoring

379 1, 379 34, 37910015, 379134, H04M15/00

Patent

active

059057858

ABSTRACT:
High usage lines in a telecommunications system must be detected to avoid local areas of high call blockage. Such high usage lines are frequently lines that originate or receive data calls. The presence of a data call is detected by testing for a signal, such as a tone, on the call connection after an answer signal has been detected, and testing to see if the duration of the call exceeds some predetermined quantity. Lines which originate or receive data calls exceeding the predetermined quantity are then monitored to measure their usage. Advantageously, many high usage lines can be detected by monitoring only the relatively few lines that originate or receive data calls.

REFERENCES:
patent: 4197427 (1980-04-01), Hutcheson et al.
patent: 4291200 (1981-09-01), Smith
patent: 4907256 (1990-03-01), Higuchi et al.
patent: 5490199 (1996-02-01), Fuller et al.
L. Freimanis et al.; No. 1 ESS Scanner, Signal Distributor, Central Pulse Distributor; Bell System Technical Journal (BSTJ), v. 43, No. 5, Part 2, pp. 2255-2263, Sep. 1964.

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