Method and system for connecting a digital phone limited to analog transmissions
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United States of America Patent
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Jun 2, 1998
Grant Date -
N/A
app pub date -
Jul 18, 1996
filing date -
Jul 18, 1996
priority date (Note) -
In Force
status (Latency Note)
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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.
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