User's Manual

Chapter 2 - Hardware Installation
6 Multi-Tech Systems, Inc. MT5656ZDX User Guide
Technical Specifications
The MultiModemZDX modem meets the following specifications:
Trade Name MultiModemZDX
TM
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