Telephonic communications – Special services – Anonymous party
Patent
1991-04-05
1993-11-30
Dwyer, James L.
Telephonic communications
Special services
Anonymous party
379213, 379255, 379142, 379 84, H04M 342, H04M 300, H04M 156
Patent
active
052673049
ABSTRACT:
In an automated directory assistance system, the telephone number of the calling party is used to determine whether or not the outgoing "spoken" message will include the area code of the sought-after number.
REFERENCES:
patent: 4817129 (1989-03-01), Riskin
patent: 4979206 (1990-12-01), Padden et al.
Beyond ISDN Theory by Andrew Waite, Inbound/Outbound Magazine Dec. 1989.
AT&T Bell Laboratories
De Blasi Gerard A.
Dwyer James L.
Slusky Ronald D.
Tsang Fan
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