System for multiple voice lines with data over a single...

Details System for multiple voice lines with data over a single... System for multiple voice lines with data over a single...

H - Electricity

04

L

H04L 12/16 (2006.01) H04M 3/42 (2006.01) H04M 11/06 (2006.01)

Patent

CA 2302127

A system that provides additional voice lines with data over a single two-wire subscriber loop. At the subscriber premise, one or more telephone instruments and data devices are connected to a digital modem into either a voice or a data interface. Analog voice signals are PCM sampled then packetized, and voice and data packets are transmitted to a CO modem over the subscriber loop. The CO modem depacketizes the voice packets into PCM format and transmits PCM voice information to a CO switch over a standard digital trunk interface. Data packets are routed to a data network. Voice packets are given transmission priority over data packets to ensures that voice is transported in the presence of data with low latency.

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