Method for a program-controlled telephone switching system in wh

Details Method for a program-controlled telephone switching system in wh Method for a program-controlled telephone switching system in wh

1988-08-23

1990-02-06

Dwyer, James L.

Telephonic communications

Special services

Call waiting

379208, 379209, H04M 348

Patent

active

048993743

ABSTRACT:
A method for automatically connecting an indicating telephone conditions in which when a subscriber calls another subscriber and when the called subscriber's phone is busy, a central controller which includes a memory automatically is subsequently connected after waiting tones and signal tones and cut-in tones have been generated. The method allows automatic connections and cut-ins without redialing by the calling station.

REFERENCES:
patent: 3609245 (1971-09-01), Richter
patent: 4166929 (1979-09-01), Sheinbein

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