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Product: |
V.22bis/ V.22 Modem Software (V22 / V22bis Soft Modem) |
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Company: |
GAO Research Inc. |
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Type: |
Software |
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Description: |
GAO's V.22 & V.22bis software modules implement the ITU-T standards for 1200 bps and 2400 bps full-duplex data communication on the GSTN and on point-to-point 2 wire leased line circuits. In these modems, channels are separated by frequency division and each channel is phase shift modulated. A symbol rate of 600 carries 2-bits per symbol for a rate of 1200 bps for V.22. For V.22bis, each channel is quadrature amplitude modulated (QAM) to carry 4-bits per symbol at 600 symbols per second for a rate of 2400 bps. Carrier frequencies are 1200 Hz and 2400 Hz for the low and high channels respectively.
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Related Products: |
Communications Software |
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