V.32 Modem Software

VOCAL's embedded software libraries include a complete range of ETSI / ITU / IEEE compliant algorithms, in addition to many other standard and proprietary algorithms. Our software is optimized for execution on ANSI C and leading DSP architectures (TI, ADI, AMD, ARM, MIPS, CEVA, LSI Logic ZSP, etc.). These libraries are modular and can be executed as a single task under a variety of operating systems or standalone with its own microkernel.

The line interface 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.

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

Features

Fully compliant with ITU recommendations
Trellis coded modulations support data rates of 7200, 9600, 12000 and 14400 bps.
Non-trellis coded modulations support data rates of 4800 and 9600 bps
All carriers are 2400 symbols per second
Modem MIB support (RFC 1696)
Local and remote loopback diagnostics (V.54)
Modular software suite available with controller code
Optimized for high performance on leading edge DSP architectures
Multi-tasking environment compatible

Configurations

DAA interface using linear codec at 7.2 kHz, 8.0 kHz or 16.0 kHz sample rate
Direct interface to 8.0 kHz PCM data stream (A-law or m-law)
PPP (RFC 1662), HDLC, V.14 and direct binary framing layers
North American and International Dialing/Telephony dialing functions available
Data protocol layer (V.42/MNP 2-4/V.44/V.42bis/MNP 5) available
VOCAL's Overall Model Controller (OMC) Layer provides coordinated data modulation/data protocol operation relative to startup, shutdown, modulation retrains and modulation renegotiations
System can be combined with V.110 rate adaptation software
System can be combined with other modulations (V.92, V.90, V.34, et al.) and automode procedures (PN-2330, V.8 and V.8bis)
Data/Facsimile/Voice Distinction upon startup is available. Complete facsimile systems, modulations (V.34fax, V.17, et al.) and protocols (T.30), and speech coders available.
Multiple modulation ports can be executed on a single DSP

Datasheet

ITU Recommendation V.32

ITU Recommendation V.32bis