Appendix C - Technical Specifications

Appendix C - Technical Specifications

The MultiModemZDX modem meets the following specifications:

Trade Name

MultiModemZDX™

Model Number

MT5656ZDX

Server-to-Client

V.90 speeds when accessing a V.90 or V.92 server (actual

Data Rates

speed depends on server capabilities and line conditions)*

Client-to-Server

Up to 50Kbps when accessing a V.92 server (actual speed depends

Data Rates

on server capabilities and line conditions); otherwise, the same as client-

 

to-client data lines.

Client-to-Client

33600,31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000,

Data Rates

9600, 7200, 4800, 2400, 1200, 0-300 bps

Fax Data Rates

14400, 12000, 9600, 7200, 4800, 2400, 1200, 0-300 bps

Data Format

Serial, binary, asynchronous

Modem Compatibility

ITU-T V.92,V.90, V.34 enhanced, V.34, V.34bis, V.32, V.22bis, V.22; Bell

 

212A and 103; ITU-T V.21; V.42, V.42bis, V.44

Fax Compatibility

ITU-T “Super” Group 3, Class 1.0, 2.0, 2.1, T.4, T30, V.21, V.27ter, V.29,

 

V.34, V.17; TIA/EIA 578 Class 1,2, TR29.2

Video Compatibility

ITU-T V.80 for H.34 video conferencing

Voice Compatibility

AT+V/TAM command set

Voice Mode Sampling

Up to 44.100 KHz (down-sampled to 11.025KHz)

Error Correction

ITU-T V.42 (LAP-M or MNP 4)

Data Compression

ITU-T V.44 (4:1 throughput), V.42bis (4:1 throughput), MNP 5 (2:1

 

throughput)

Speed Detection

Automatic speed detection and switching between available speeds

Speed Conversion

Serial port data rates adjustable to 300; 1200; 2400; 4800; 9600; 19,200;

 

38,400; 57,600; 115,200 bps

Mode of Operation

Fax online modes, full duplex data over dial-up; voice

Flow Control

XON/XOFF (software), RTS/CTS (hardware)

Intelligent Features

Plug and play, full AT command compatible, autodial, redial, repeat dial,

 

pulse or tone dial, dial pauses, auto answer, adaptive answer; EIA

 

extended automode; caller ID, adaptive line probing; automatic symbol and

 

carrier frequency during start-up, retrain and rate renegotiation, DTMF

 

detection, call status display, auto-parity and data rate selections,

 

keyboard-controlled modem options, non-volatile memory, US Caller ID

 

reporting; quick-connect startup

*Though these modems are capable of 56K bps download performance, line impairments, public telephone infrastructure and other external technological factors currently prevent maximum 56K bps connections.

Multi-Tech Systems Inc. MT5656ZDX Series User Guide

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