Multi-band modem

Details Multi-band modem Multi-band modem

2005-08-23

2005-08-23

Chan, Wing (Department: 2643)

Telephonic communications

Telephone line or system combined with diverse electrical...

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

C379S090010, C379S093280, C375S222000

Reexamination Certificate

active

06934368

ABSTRACT:
A method for communication includes modulating a stream of data in accordance with a voice-band modem specification, so as to generate a modulated signal. The modulated signal is up-shifted to generate a passband signal, which is transmitted over a telephone line simultaneously with a baseband voice signal.

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