Complete Communications Engineering

V.32 / V.32bis Soft ModemV.32bis / V.32 modem software is implemented for real-time execution with support for multichannel applications. The software libraries are modular and can be executed as a single task under a variety of operating systems or standalone with its own microkernel. Contact us to discuss your modem application requirements.

download brochure for V.32 / V.32bis Soft Modem

VOCAL’s V.32bis / V.32 modem software is optimized for performance on leading DSP architectures and processors from TI, Intel, ADI, AMD and other vendors. Our V.32 modem software  may be licensed standalone, as a library or complete design. Custom solutions are also available.

Virtual Modem over IP

VOCAL’s SIP Software modem (MoIP or V.MoIP) solution provides developers a range of solutions to connect legacy dial up modems to modem infrastructure. Unlike other virtual modem designs, the SIP software modem can communicate with a physical modem at the far end using a VoIP service over an IP network.

V.32 and V.32bis Software Features

V.32 / V.32bis Modem

ITU-T V.32 defines the modulation methods and protocol operating sequences for a modem used on Switched Telephone Network 4-wire and on 2-wire  circuits. Both full duplex and half-duplex modes are supported with bidirectional data transfer at either 9.6 kbps or 4.8 kbps and a symbol rate of 2,400 baud. ITU-T V.32bis specifies a modem allowing  bidirectional data transfer at up to 14.4 kbps.

The line interface for the V.32 / V.32bis modem software may be an analog front end (codec and DAA) or a digital interface such as T1/E1, Switched 56, and ISDN. The upper end of this software can provide a PPP, HDLC, V.14, or a direct binary framing layer. Higher data protocol layers, V.42 (including MNP 2-4), V.44, V.42bis and MNP 5, are options as well.

The V.32bis and V.32 modulation family  can be combined with other data modulations including V.92, V.90, V.34, and V.22bis / V.22 / V.23 / V.21. Automatic modulation detection (Automode) procedures include those of PN-2330, V.8 and V.8bis. V.32 and V.32bis data modulation software is fully compatible with VOCAL’s facsimile, telephony, speech coder and multimedia systems.


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supported platforms for V.32 / V.32bis Soft Modem

VOCAL’s optimized software is available for the above platforms. Please contact us for specific V.32/V.32bis supported platforms.