Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1994-11-14
1996-12-31
Cumming, William
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 59, 379211, H04Q 738
Patent
active
055901743
ABSTRACT:
A mobile communication system provides different types of radio communications using a same mobile terminal service. One service area is provided by conventional base stations by which the mobile communication network is carried out, and another service area is provided by a fixed network terminal device, such as a cordless home phone connected in a public fixed communication network, and the mobile terminal device can be used in both service areas by switching over internal call circuit appropriately. On the other hand, a call directed to the mobile terminal device is suitably routed to the mobile terminal device in either of the service areas by a terminal device switching circuit in the mobile communication systems having a database on which location information of the mobile terminal device are registered.
REFERENCES:
patent: 4775999 (1988-10-01), Williams
patent: 4807279 (1989-02-01), McClure et al.
patent: 5222123 (1993-06-01), Brown et al.
patent: 5396540 (1995-03-01), Gooch
Tsuji Toshiya
Yahagi Masahiko
Cumming William
NEC Corporation
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