User guide
6
MultModemUSB User Guide
Introduction
Welcome to the world of data communications. You have acquired one of the finest intelligent data
and fax modems available today from one of America’s oldest and most respected modem
manufacturers: Multi-Tech Systems, Inc. This owner’s manual will help you install, configure, test and
use your modem.
Product Description
The MT5634ZBA-USB modem incorporates V.90
™
technology, which enables Internet connections at
data rates up to 53K bps* over standard telephone lines. V.90 technology is able to send data
downstream from the Internet to your computer at these speeds because data on the telephone
network typically is converted from digital to analog only once before it reaches your modem.
Upstream transmissions, and transmissions between client modems, are limited to data rates of
33.6K bps, as are downstream transmissions that are converted more than once on the telephone
network.
The MT5634ZBA-USB is Plug and Play-capable, with interactive automatic dialing and command
mode configuration. In standard mode, you can store up to four command lines or telephone
numbers of up to 40 characters each in the modems’ nonvolatile memory. The modem pulse- or tone-
dials, and recognizes dial tones and busy signals for reliable call-progress detection. The modem can
detect AT&T calling card tones. It also has Caller ID, remote configuration and incorporates self-
resetting lightning protection. The MT5634ZBA-USB is FCC-registered for connection without
notification to the telephone company.
The MT5634ZBA-USB is a full-duplex intelligent modem with V.42 error correction, V.42bis data
compression, and V.17 (14,400 bps), Class 1 and 2, Group 3 fax capabilities.
Universal Serial Bus (USB)
Universal Serial Bus (USB), defined by a consortium of industry leaders, permits connection of
multiple low-speed and medium speed computer peripheral devices such as telephones, modems,
printers, keyboards, mice, and scanners; all from a single personal computer port. The specification,
based on an open architecture is quickly becoming a standard feature in new desktop and notebook
computers.
* Although K56flex technology is capable of downloads of up to 56K bps, FCC regulations currently
restrict ISP modems to downloads of 53K bps.