Digital telephone station line controller

Details Digital telephone station line controller Digital telephone station line controller

1992-06-24

1995-05-02

Chin, Stephen

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 29, 379210, 370 13, H04M 322, H04M 342, H04J 116

Patent

active

054127092

ABSTRACT:
A digital station line controller is connected via a digital link, such as a T1 span, to the line side of a central office and via digital station line loops to digital terminal devices, such as telephones. The station line controller interprets certain signals used by a conventional protocol, such as TR8, between a central office and a remote terminal, as status requests. In response to the status requests, the station line controller provides status information obtained by monitoring the terminal devices connected thereto and the station line controller itself. The status information may be obtained by generating codes which perform tests of the terminal devices and the station line controller. In addition, non-voice information transmitted over a subscriber channel in the on-hook, no-ring state of the subscriber channel is decoded and used or output by the station line controller to a corresponding terminal device or auxiliary equipment.

REFERENCES:
patent: Re31789 (1985-01-01), Hashimoto
patent: 3840706 (1974-10-01), Krasin et al.
patent: 3946158 (1976-03-01), Leclercq et al.
patent: 4046964 (1977-09-01), Daugherty et al.
patent: 4068104 (1978-01-01), Werth et al.
patent: 4071699 (1978-01-01), Jovic et al.
patent: 4320258 (1982-03-01), McDonald
patent: 4381427 (1983-04-01), Cheal et al.
patent: 4408325 (1983-10-01), Grover
patent: 4439639 (1984-03-01), Munter
patent: 4582956 (1986-04-01), Doughty
patent: 4672660 (1987-06-01), Curtin
patent: 4821256 (1989-04-01), Schmidt et al.
patent: 4853955 (1989-08-01), Thorn et al.
patent: 4873719 (1989-10-01), Reese
patent: 4885769 (1989-12-01), Beierle
patent: 4901344 (1990-02-01), Monette et al.
patent: 4924492 (1990-05-01), Gitlin et al.
patent: 4937850 (1990-06-01), Borbas et al.
patent: 4964112 (1990-10-01), Appelmann
patent: 4995075 (1991-02-01), Angiolillo-Bent et al.
patent: 4998240 (1991-03-01), Williams
patent: 5027341 (1991-06-01), Jarvis et al.
patent: 5027343 (1991-06-01), Chan et al.
patent: 5029333 (1991-07-01), Graves et al.
patent: 5034948 (1991-07-01), Mizutani et al.
patent: 5099480 (1992-03-01), Murata
patent: 5111497 (1992-05-01), Bliven et al.
patent: 5200996 (1993-04-01), Beierle

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