Conversion of a fax modulation to a data modulation

Details Conversion of a fax modulation to a data modulation Conversion of a fax modulation to a data modulation

H - Electricity

04

M

H04M 11/06 (2006.01) H04N 1/32 (2006.01)

Patent

CA 2132650

- 13- Conversion of a Fax Modulation to a Data Modulation Abstract A simultaneous voice and data (SVD) modem is coupled to both a fax machine, which includes a fax modem, and a telephone set. When the fax machine initiates a fax-call, the SVD modem emulates signaling of the local loop. This allows the fax machine to operate without requiring modifications to the fax machine. After establishing a data connection with a far-end SVD modem, the near-end SVD modem demodulates the fax modulation signal from the fax machine to recover the fax data. The fax data is then re-modulated using a data modulation technique for transmission to the far-end SVD modem. The latter, demodulates thedata portion of the signal to recover the fax data, which is then re-modulated using a fax modulation technique for transmission to a far-end fax machine.

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