Enhanced call-waiting service

Details Enhanced call-waiting service Enhanced call-waiting service

1985-03-13

1987-04-28

Dwyer, James L.

Telephonic communications

Special services

Call waiting

379361, H04M 342

Patent

active

046619755

ABSTRACT:
A process for controlling a telephone switching system is disclosed which gives a telephone customer alternative ways of handling an incoming call while that customer is engaged with an existing call. The conventional call-waiting process is modified by permitting the dual tone multifrequency buttons to be operated for a predetermined short interval after the call-waiting signal is given to the called customer responsive to the particular tone signals keyed. The switching system is enabled to send busy tone or a predetermined announcement to the calling party or to reroute the calling party to an alternate destination.

REFERENCES:
patent: 3854014 (1974-12-01), Akin et al.
patent: 4022983 (1977-05-01), Braun et al.
patent: 4232199 (1980-11-01), Boatwright et al.
patent: 4277649 (1981-07-01), Sheinbein
patent: 4278844 (1981-07-01), Jones
patent: 4320258 (1982-03-01), McDonald

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