Communication device with ISDN interface

Details Communication device with ISDN interface Communication device with ISDN interface

1991-03-22

1993-10-26

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 89, 455127, 379 58, H04B 144, H04B 138

Patent

active

052574105

ABSTRACT:
Briefly, according to the invention, a multi-unit communication device having a transceiver unit 108 and a control unit 104 is provided. The transceiver unit 108 transmits and receives information signals having digital and analog portions. The control unit 104 provides for operator interface to the communication device. The communication between the transceiver unit 108 and the control unit 104 is conducted on a single pair of wires 112 using ISDN format.

REFERENCES:
patent: 4147984 (1979-04-01), Caudel et al.
patent: 4637022 (1987-01-01), Burke et al.
patent: 4684941 (1987-08-01), Smith et al.
patent: 4884287 (1989-11-01), Jones et al.
patent: 4916724 (1990-04-01), Usui
patent: 5117219 (1992-05-01), Tice et al.
Motorola Telecommunications Device Data Book, pp. 2-477 to 2-518, Advanced Information-ISDN Universal Digital Loop Transceivers II (UDLT II) Motorola, Inc. 1989.

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