Mechanism for providing emergency POTS service in event of loss

Details Mechanism for providing emergency POTS service in event of loss Mechanism for providing emergency POTS service in event of loss

1995-07-10

1999-08-24

Woo, Stella

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379 9305, 379399, 379 9309, H04M 1100

Patent

active

059434040

ABSTRACT:
In order to ensure continuous telephone service to a customer premises served by an ISDN line, without requiring that the customer maintain an additional POTS line as an emergency back-up to the normally used ISDN service, ISDN signalling circuits and network termination interface components are modified, so that, in the event of a loss of power to customer premises digital communications equipment, a communication link between an auxiliary POTS telephone and the normal ISDN communication path to the central office may be established. There need not be any modification of the central office switch, per se, so that the integrity of the ISDN communication path with the central office line card remains unaffected. As a result, the central office equipment can continue to conduct standard ISDN communications with the customer premises equipment, even though the customer is employing a POTS back-up analog phone.

REFERENCES:
patent: 4853949 (1989-08-01), Schorr et al.
patent: 5142571 (1992-08-01), Suzuki et al.
patent: 5216704 (1993-06-01), Williams et al.
patent: 5610922 (1997-03-01), Balatoni
patent: 5619252 (1997-04-01), Nakano
patent: 5627827 (1997-05-01), Dale et al.

Affiliated with

Also associated with

Rating

Mechanism for providing emergency POTS service in event of loss does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanism for providing emergency POTS service in event of loss , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism for providing emergency POTS service in event of loss will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-474163