Multi-Tech MT202TD 


The Multi-Tech MT202TD is a low speed data modem operating at 0 -1200 bps over private leased lines. The modem transmits and receives asynchronous data in full duplex over 4-wire lines, or in half duplex over 2-wire lines. It is also compatible with other Bell 202T modems configured for leased line operation.

The MT202TD interfaces to computers, terminals, and other devices via its standard RS232 connector. The MT202TD is available in an attractive desktop model and up to 12 devices can be rackmounted in our ZDXModemRack. The rack is a standard 19" chassis with an integrated redundant power supply and universal input.


Operates at asynchronous rates up to 1200 bps

Supports 2-wire half duplex or 4-wire full duplex lines

Rackmount chassis available for up to 12 devices

LED indicators for quick reporting of condition and self-testing

Field-proven reliability

Two-year warranty



Data Format: Serial binary, asynchronous
Data Rate: 0-1200 bps
Compatibility: Bell 202 and 202T data sets, 202C,
202D, 202E, 2028 models
Mode of Operation: 2-wire half duplex or 4-wire full duplex
Line Requirements: 2- or 4-wire leased line, unconditioned
Modulation: Frequency Shift Keyed (FSK)
Carrier Frequencies: Mark: 1200 Hz Space: 2200 Hz
Soft Carrier: 900 Hz
Frequency Stability: + .01% (crystal controlled)
Transmit Level: -0 dBm (adjustable to-9 dBrn)
Receive Sensitivity: -40 dBm (under worst case conditions)
Indicators: LEDs for Transmit (Send) Data, Receive Data,
Carrier Detect, Clear to Send, Request to Send, Data Set
Ready and Test Mode

      Request to Send/Clear to Send: 180 mSec. 
      Carrier Detect: Turn on 30 mSec, 
      Turn off 10 mSec. 
      Receiver squelch: Default 156 mSec. 
      Soft Carrier: Default 25 mSec. (minimum 10 mSec.) Interface: EIA RS232C/ITU-T V24 
Connectors:  One DB-25 RS-232C connector (25-pin female connector);  external power transformer; RU 11 line jack Diagnostics: Analog loopback and digital loopback 
Power requirements: 117 VAC, 60 Hz, .I amp Operating Temperature: 0 to 50C (32 to 120F) 
Physical Dimensions: 4.3" w x 1.0" h x 5.6" d; 8 oz (10,8 cm x 2.5 cm x 14.2 cm; 224 g)

Trademarks: MT202TD, Multi-Tech, f& the Mutd-Tech logo: Multi-Tech Systems. Inc. All products or technologies are the trademarks or registered trademarks of their respective holders.

jump to 202T related pages

301-924-7400 EXT 25 / 301-924-7400 EXT 25 / fax 301-924-7403

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