Network terminal apparatus

Details Network terminal apparatus Network terminal apparatus

1994-05-19

1996-10-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, H04J 1500

Patent

active

055661661

ABSTRACT:
This invention relates to a network terminal apparatus in ISDN for connecting a two-wire U-interface on the switchboard side and a four-wire S-interface on the terminal side to each other. A network terminal apparatus disclosed for causing signals from the switchboard or the terminal to enable or disable the circuitries in the periphery of transmission/reception means of S- and U-interfaces, thus dispensing with use of a microprocessor and notifying the user of the status by LED display means. It comprise U-interface means connected to a switchboard for transmitting/receiving channel data 2B+D as a reference transmission rate, S-interface means connected to a terminal for transmitting/receiving channel data 2B+D, a status display for displaying activation status of the system, and electric supply means for supplying a regular and backup source, and reset means for performing a system resetting action.

REFERENCES:
patent: 4262283 (1981-04-01), Chamberlain et al.
patent: 4592045 (1986-05-01), Fundneider
patent: 4866703 (1989-09-01), Black et al.
patent: 5157665 (1992-10-01), Fakhraie-Fard et al.
patent: 5353305 (1994-10-01), Fukuda et al.

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