Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1994-01-21
1996-05-14
Rogers, Scott A.
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 60, 379 63, 379 94, H04N 1100
Patent
active
055175503
ABSTRACT:
An ISDN switching apparatus for performing an ISDN local connection includes a digital switch, a first terminal and a second terminal connected by a juncture external to the digital switch. A network control device performs interface control for the public network. The network control device is located between the digital switch and the public network. A terminal device controls a fixed terminal device such as an ISDN terminal. A first connection device performs a connection control of the digital switch for the terminal control device. A mobile terminal control device controls a mobile terminal, and a second connection device controls the digital switch for the mobile terminal control device such that when transmitting from the mobile terminal to the public network, the mobile terminal control device and the second terminal are connected by the digital switch via the second connection device, and the first terminal and the network control device are connected by the digital switch via the first connection device.
REFERENCES:
patent: 4680786 (1987-07-01), Baker et al.
patent: 5297193 (1994-03-01), Bouix et al.
patent: 5325419 (1994-06-01), Connolly et al.
Lee Fan
NEC Corporation
Rogers Scott A.
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