Digital telephone data and control signal transmission system

Details Digital telephone data and control signal transmission system Digital telephone data and control signal transmission system

2011-03-29

2011-03-29

Ramakrishnaiah, Melur (Department: 2614)

Telephonic communications

Telephone line or system combined with diverse electrical...

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

C379S090010, C379S093050

Reexamination Certificate

active

07916843

ABSTRACT:
Techniques are disclosed for using Ethernet Layer 1 as a means for transporting audio, control, and status signals between telephones and an aggregator device in a telephone system. Techniques are also disclosed for using the aggregator to determine whether a telephone supports only Ethernet Layer 1, and for using the aggregator to communicate with the telephone using an appropriate protocol based on the results of the determination.

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patent: WO 02/07355 (2002-01-01), None

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