Telephone call routing and charging system

Details Telephone call routing and charging system Telephone call routing and charging system

1981-06-04

1983-10-18

Schreyer, Stafford D.

179 63R, 179 18EA, H04M 1518, H04M 1700

Patent

active

044107650

ABSTRACT:
A telephone call routing and charging system using processor circuitry can automatically select the most economical route for individual telephone calls. The system includes a signal direction detector for automatically determining the time span of a call for charge purposes from the time the call is answered to the time the call is terminated.

REFERENCES:
patent: 4122308 (1978-10-01), Weinberger et al.

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