Multi-Tech MT5634ZBA DB-25 Dial-Up Modem

Ideal for small-business dial-up

The Multi-Tech MT5634ZBA is a DB-25 dial-up modem built for small businesses, telecommuters and SOHO users. It delivers data and fax functions over a standard phone line with remote configuration and callback security features. Two RJ11 ports support the line connection and an optional handset.

56 Kbps data and 14.4 kbps fax ceiling

The modem reaches 56 Kbps downstream under V.90 and earlier ITU standards, while fax tops out at 14.4 kbps. That headroom covers email, light web access and document faxing, but it cannot handle broadband speeds, video streaming or modern cloud workloads.

Low heat and silent operation

With no moving parts and minimal power draw from the serial port, the unit runs cool and silent in normal use. It adds negligible heat to a rack or desktop and requires no active cooling or external power supply.