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Chapter 1 - Introduction and Description
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide
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1.3.1 MT2834BA/BL Series Features
Your MT2834BA/BL modem meets the proposed Enhanced V.34 ITU standard for data signalling
rates as high as 33.6/31.2K bps in full duplex mode. Enhanced V.34 is an extension of V.32/V.32bis/
V34 standards, and supports and is compatible with those features, including EIA extended
Automode; adaptive line probing; automatic symbol rate and carrier frequency during start-up; and
retrain and rate renegotiation (in 2400 bps increments).
The major application for the MT2834BL is in 4-wire leased line networks with the addition of dial
backup capability. With this capability, the dial-up feature saves any down time if the leased line fails.
Since the MT2834BL operates according to ITU V.34 modulation, it can operate full-duplex over two
wires, so that the dial backup mode performs the same throughput as the leased line.
The MT2834BA/BL features ITU V.25bis standard for synchronous dialing, ITU V.42 error correction
and V.42bis data compression, providing 100% error-free data transmission. V.42 error correction
incorporates MNP( Classes 3 and 4, and LAP-M. You may select V.42bis data compression for 4-1
throughput, or MNP Class 5 for 2-1 throughput.)
1.4 Fax Features
Your modem meets the ITU V.17 standard for sending and receiving faxes. When linked to a
compatible fax machine or modem, it can transmit faxes at 14,4 K bps. It also meets the ITU’s Group
3 Designation for sending and receiving faxes at 9600 bps; and Group 2 Designation for sending and
receiving faxes at 4800 bps. The modem is also downward-compatible with modems to speeds as
low as 300 bps, so it can send and receive faxes with any fax machine in the world.