Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – With blocking of normal usage
Patent
1993-05-12
1995-06-20
Chin, Stephen
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
With blocking of normal usage
379 10, 370 13, 370 14, 370 15, H04M 124, H04J 116, H04J 314
Patent
active
054266882
ABSTRACT:
A Public Switched Telecommunications Network (PSTN) including trunks connecting SPC switches and having a common channel signalling network with SPs, STPs, and SCPs, with each of the SPs connected to an MCC which is connected to an MMOC forming part of an SCC which includes a critical indicator panel which mirrors system alarm signals at the MCC. Connected to the PSTN is a monitoring center associated with monitored premises having sensing devices connected to an interface at the premises. The interfaces and SPs are connected by two full duplex channel data links which are continuously subjected to loop back testing which is connected to provide at the MCC an alarm signal to identify any interruption in the communication through the SP and trunks connected thereto and also to provide at the MCC a signal of interruption of a data link connected to the first SP. An adjunct processor is provided at an SCC connected to a plurality of MCCs. The adjunct processor receives from the signalling device at the MCC a signal indicating a break in a link and this through the adjunct processor initiates a connection between the SCC and monitoring center to send to the monitoring center an indication of the identity of a monitored premise wherein a break in the data link has occurred.
REFERENCES:
patent: 4435704 (1984-03-01), Hashimoto et al.
patent: 4446551 (1984-05-01), Seo
patent: 4491838 (1985-01-01), West
patent: 4551718 (1985-11-01), Cookson
patent: 4688208 (1987-08-01), Kawaguchi
patent: 4774510 (1988-09-01), Steinke
patent: 4841520 (1989-06-01), Steely
patent: 5036318 (1991-07-01), Bachhuber
patent: 5111497 (1992-05-01), Bliven
patent: 5301050 (1994-04-01), Czerwiec et al.
W. Stallings "ISDN, An Introduction" Macmillan Publishing Company, 1989, pp. 397-405.
Chin Stephen
Loomis Paul
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