Description
MultiTech Systems MT1432BA MultiModem II Intelligent Modem 14.4K EIA RS-232C
The MultiTech Systems MT1432BA is an external 14.4 Kbps intelligent modem from the MT1432 Series MultiModem II line. It connects to a host computer via a standard EIA RS-232C (DB-25) serial interface and to the telephone network via RJ-11 jacks, supporting both data and fax communication. Front-panel LEDs indicate TR (Terminal Ready), EC (V.42 error correction), and FX (Fax) status, with a mode switch for Answer, Originate, and Voice/Data operation.
Specifications & What's Included
- Model: MultiTech Systems MT1432BA (MT1432 Series)
- Type: External dial-up modem
- Maximum Data Rate: 14.4 Kbps (14,400 bps)
- Standards: V.42, V.42bis error correction and data compression; Fax Class 2
- Computer Interface: EIA RS-232C via DB-25 connector
- Telephone Ports: PHONE and LINE RJ-11 jacks (rear panel)
- Volume Control: Rotary dial on rear panel
- Power Switch: ON/OFF toggle on rear panel
- Front-Panel Indicators: TR (Ready), EC (V.42), FX (Fax)
- Mode Switch: Answer / Originate / Voice/Data
- Form Factor: Desktop external unit
- What's Included: Modem unit only — no power supply or AC adapter included
Applications
The MultiTech MultiModem II MT1432 series was a widely used external modem line from the early-to-mid 1990s, a period when 14.4 Kbps V.42bis modems represented mainstream dial-up connectivity for business and technical users. These modems were commonly connected to DOS and early Windows PCs, Unix workstations, and terminals via the RS-232C serial port, handling dial-up BBS access, file transfer, remote access, and fax communication. The EIA RS-232C DB-25 interface made them broadly compatible with serial ports of the era, and MultiTech's reputation for reliable hardware and AT-command compliance made the MultiModem II a popular choice in corporate environments. Today these units are sought by legacy system integrators, vintage computing enthusiasts, and operators of older systems that require a hardware serial modem rather than a software-based or USB solution.
This MultiTech Systems MT1432BA MultiModem II external modem has been inspected and appears to be in good condition. The case shows minor surface wear typical of used desktop equipment. All visible connectors — including the DB-25 RS-232C port, the PHONE and LINE RJ-11 jacks, and the rear-panel power switch — appear intact and undamaged. Please note: no power supply or AC adapter is included with this unit. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
MultiTech Systems |
Model: |
MT1432BA |
MPN: |
MT1432BA |
Type: |
External Dial-Up Modem |
Series: |
MT1432 Series MultiModem II |
SKU: |
28919 |
Interface Type: |
EIA RS-232C (DB-25) |
Connector Type: |
DB-25 (EIA RS-232C), RJ-11 (Phone/Line) |
Data Rate: |
14.4 Kbps (14,400 bps) |
Standards / Protocol: |
V.42, V.42bis, Fax Class 2 |
LED Indicators: |
TR (Ready), EC (V.42), FX (Fax) |
Modes: |
Answer, Originate, Voice/Data |
Telephone Ports: |
PHONE and LINE RJ-11 jacks |
Volume Control: |
Yes — rotary dial on rear panel |
Power Switch: |
Yes — ON/OFF toggle on rear panel |
Power Supply Included: |
No — AC adapter not included |
Form Factor: |
Desktop (External) |
Seller Notes: |
Unit only — no power supply/AC adapter included. |
Condition: |
Used – Inspected |
Country/Region of Manufacture: |
United States |
Condition Notes: |
MultiTech MT1432BA MultiModem II external modem. Inspected and in good condition with typical surface wear. All connectors intact. No power supply/AC adapter included. Please view photos and contact us with questions. |
