Telephone toll integrity checking system

Details Telephone toll integrity checking system Telephone toll integrity checking system

1987-09-25

1989-06-13

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Of centralized switching system

379139, H04M 326

Patent

active

048399167

ABSTRACT:
Apparatus for automatically obtaining data useful to determine accuracy of telephone toll message accounting equipment and procedures is disclosed. The apparatus is connected to plural telephone network lines of the telephone system at a central office location and simultaneously dials a plurality of predetermined long distance telephone numbers, each of which returns detectable information when successfully dialed up. The presence of the detectable information, such as test tone, is noted and the time is logged. This information is then automatically compared by a central control computer with the billing information collected by the billing computer to ascertain operational accuracy of the latter. The apparatus is automatically remotely operated by the central control computer under a predetermined protocol.

REFERENCES:
patent: 4311882 (1982-01-01), Johner et al.

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