Chapter 2 - Hardware Installation

Technical Specifications

The MultiModemZDX modem meets the following specifications:

Trade Name

MultiModemZDXTM

Model Number

MT5656ZDX

Server-to-Client Data Rates

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

 

depends on server capabilities and line conditions) *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.

Client-to-Server Data Rates

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

 

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

 

client-to-client data lines.

Client-to-Client Data Rates

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

 

12000, 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

T.4, T30, V.21, V.27ter, V.29, V.34, V.17; TIA/EIA 578 Class 1 and

 

Class 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 11.025 KHz)

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 auto mode; 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, TAPI

 

compliant.

Command Buffer

40 Characters

Transmission Level

-11 dBm (North America and Pan Euro) - varies by country setting

Frequency Stability

±0.01%

Receiver Sensitivity

-43 dBm under worst-case conditions

AGC Dynamic Range

43 dB

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Multi-Tech Systems, Inc. MT5656ZDX User Guide

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Multi-Tech Systems MT5656ZDX manual Technical Specifications, Server-to-Client Data Rates