Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1993-01-04
1994-06-28
Kuntz, Curtis
Telephonic communications
Audio message storage, retrieval, or synthesis
379 59, 455 331, H04M 1100, H01J 918
Patent
active
053254198
ABSTRACT:
A wireless digital personal communications system (or PCS) having a plurality of intelligent base stations and portable handset terminals, each having a predetermined radio cell coverage area. The radio cell, radio-telephone PCS has a full ISDN interface. The personal communications system facilitates direct interconnection and switching of PCS call traffic through the ISDN interface and the public switched telephone network, or any switched network. The personal communications system has voice/data/image (or any combination thereof), and incoming and outgoing calling capability. The PCS is fully operational and compatible with any modulation approach selected The intercell protocol hand-off being provided through distributed logic which is implemented in software that is resident in the intelligent portable handset terminals, in the intelligent base stations, and in the public switched telephone network (or any switched network). Alternative embodiments of the present invention include a wireless digital personal communications system having authentication means for authenticating a remote device; a wireless digital personal communications system having a combination of authentication means for authenticating a remote device and security means for securing signal and message content between an intelligent base station and a remote device, the security means including a predetermined encryption and decryption technique; a wireless digital personal communications system having dynamic zone grouping of portable handset terminals; and a wireless digital personal communications system having call forwarding for unanswered calls.
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Bannack Gary J.
Ciannella, Jr. Frank A.
Connolly David A.
Czaplewski Ronald L.
Hallman Kenneth B.
Ameritech Corporation
Kuntz Curtis
Rana Irmindra S.
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