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Using the Mwave DSP Telephony Features

Modem 14400

Mwave Data Modem

The Mwave telephony features support direct attachment to the

public switched telephone network. The Mwave data modem

supports the standard COM port interface and can be used with the

communication application programs that use the Hayes** AT

command set.

The Mwave data modem provides the following features:

Standard asynchronous COM port interface (NS16550A UART

compatible) operation

Bell**–103/212A, CCITT–V.21/V.22, V.22bis protocols with data

from 50 to 2400 bps

CCITT–V.32 protocols with data rates of 4800, 9600 uncoded,

and 9600 bps Trellis coded (optional)

CCITT–V.32bis protocols with data rates of 4800, 7200, 9600,

12000, and 14 400 bps (optional)

Hayes AT command set compatibility

Call progress monitor

Automatic dialing

Dual-tone modulation frequency (DTMF) and Pulse dialing

Asynchronous error-recovery protocol

Error correction via MicroCom** Network Protocol (MNP**)

classes 1–4

MNP class 5 for up to 2x data compression

Functional upgrades via software

CCITT V.42bis for up to 4x data compression

Chapter 3. Operating Your Computer 87

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Sharp VL-C8000S Informations techniques Page 103