Telephonic communications – Subscriber line or transmission line interface
Patent
1988-11-22
1990-03-20
Ng, Jin F.
Telephonic communications
Subscriber line or transmission line interface
361356, 379412, H04M 900, H04M 100
Patent
active
049107704
ABSTRACT:
A network interface device and enclosure adapted to interconnect incoming telephone wiring to subscriber premises wiring. The device, according to one embodiment, comprises first electrical terminals adapted to be connected to the subscriber premises wiring, second electrical terminals adapted to be connected to the incoming telephone wiring, a removable module disposed between the first and second electrical terminals, the module having space for a telephone circuit and the module having electrical connections for connecting the module with the second terminal; a cable coupled to the first terminals, the cable including a plug at an end of the cable distant from the first terminals, and a jack located on the module adapted to receive the plug, the jack being electrically coupled to the electrical connections for connecting the module with the second terminal. The network interface device may be disposed within an enclosure and the enclosure may have individual access panels so that an individual subscriber can access its terminals and not the terminals of other subscribers.
REFERENCES:
patent: 4560839 (1985-12-01), Dillard
patent: 4588238 (1986-05-01), Mickelson et al.
patent: 4613732 (1986-09-01), Cwirzen et al.
patent: 4651340 (1987-03-01), Marson
patent: 4729059 (1988-03-01), Wang
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patent: 4800588 (1989-01-01), Poster, Jr.
"SNI-2200 Features", 6-1984, Keptel [379-399].
Collins Thomas J.
Graham Thomas G.
Stier Donald C.
Keptel, Inc.
Ng Jin F.
Rhodes, Jr. R. Gale
Vaas Randall S.
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