Method and system for connecting a digital phone limited to anal

Details Method and system for connecting a digital phone limited to anal Method and system for connecting a digital phone limited to anal

1996-07-18

1998-06-02

Hong, Harry S.

Telephonic communications

Plural exchange network or interconnection

Interexchange signalling

370271, 370466, 370493, 370524, 379 9001, 379399, H04M 700, H04M 1100, H04M 100, H04J 312

Patent

active

057612943

ABSTRACT:
A method and system of enabling incoming and outgoing call capability for a digital telephone that is limited to analog transmissions include providing a converter that locally supports the protocol of the digital telephone, but that converts digitized signals of voice information, party-specific call messages and call-handling call messages into outgoing analog signals. In one embodiment, one analog signal carries the voice information and a second analog signal carries the party-specific and call-handling call messages, with the first analog signal being transmitted via a public switching telephone network and the second analog signal being transmitted via a data network. Received analog signals are reconverted to digital signals having the appropriate protocol. In another embodiment, the voice information, the party-specific call messages and the call-handling call messages are transmitted along a single digital link between two converters, typically by means of a data network.

REFERENCES:
patent: 4998274 (1991-03-01), Ephraim
patent: 5305377 (1994-04-01), D'Arcy et al.
patent: 5412709 (1995-05-01), Jarvis et al.
patent: 5440613 (1995-08-01), Fuentes
patent: 5459780 (1995-10-01), Sand
patent: 5502727 (1996-03-01), Catanzaro et al.

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