Integrated POTS/DSL line driver with floating supply voltage

Details Integrated POTS/DSL line driver with floating supply voltage Integrated POTS/DSL line driver with floating supply voltage

2005-08-16

2005-08-16

Woo, Stella (Department: 2643)

Telephonic communications

Telephone line or system combined with diverse electrical...

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

C379S413000

Reexamination Certificate

active

06931108

ABSTRACT:
A telecommunication interface integrates DSL and POTS components in a manner which effectively separates their bandwidth requirements from their power requirements. This is accomplished by powering the tip path and ring path amplifiers with a pair of transformer-coupled floating power supply-sourced voltages, and referencing respective like polarity inputs of the amplifiers to a differential voltage pair that is used to operate the subscriber loop, including providing loop current and controllably applying a ringing voltage to the POTS line.

REFERENCES:
patent: 6597768 (2003-07-01), Yamano et al.
patent: 6674845 (2004-01-01), Ayoub et al.

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