System and method of transmitting voice over digital subscriber line
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United States of America Patent
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-
Jul 10, 2001
Grant Date -
N/A
app pub date -
Feb 4, 1999
filing date -
Feb 4, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system for digitizing voiceband signals at the remote terminal (20) of a Digital Subscriber Line (DSL) connection and embedding the digitized voiceband component into an active DSL data stream using a DSL modem (24). Voiceband transmissions between the remote terminal (20) and the central office call switching equipment (1) occur in the analog domain when the DSL modem (28) is OFF and in the digital domain when the DSL modem (28) is ON with the digital voiceband signals transmitted over a DSL link. Preferably, the remote terminal (20) can drive a real analog telephone (30) by providing battery feed, ring-trip detection, off-hook detection and ringing generation (60) In-house 4-wire lines pairs (21, 23) are configured between the modem, telephones and computer or home network to permit all digital transmission from the subscriber to the central office.
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