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MT3334HD8 User Guide
Introduction
The Multi-Tech MT3334HD8 is a high speed, high density modem card for the CommPlete
Communications Server. Each MT3334HD8 card contains eight integrated 33,600 bps modems. Each
modem on the MT3334HD8 card can be configured independently of the others via the CommPlete
Communications Server's MR9600 controller, which can support and control up to 12 cards per rack.
Users dial into the MT3334HD8's modems through a T1 daughter card on the RASCard that controls the
segment. There are no external connectors on the MT3334HD8.
Up to three MT3334HD8 cards can be installed per T1 segment. With eight modems per card, the
CommPlete Communications Server can support up to 24 simultaneous data lines per segment, or 96 per
CommPlete Communications Server
The MT3334HD8 operates as an enhanced ITU-T V.34 dial-up modem with a maximum speed of 33,600
bits per second (bps). As such, it includes the advanced features of Multi-Tech standalone modems such as
the popular MultiModemZDXb.
The MT3334HD8 is registered by the FCC for direct connection to the public telephone networks. No Data
Access Arrangements (DAAs) are required.
The MT3334HD8 is fully compatible with the standard AT command set, and is therefore compatible with
all popular communications software packages.
This user guide will help you to install, configure, test, and use the MT3334HD8.
LED Indicators
The MT3334HD8 has 16 LED indicators on the front panel, two for each modem:
CD Carrier Detect. The CD LED lights when the modem detects a valid carrier signal.
OH Off Hook/Out of Service. The OH LED lights when the modem is off hook, which occurs when the
Power Supplies
DC voltages are supplied to all modems in the CC9600 rack through two PS9600 universal input switching
power supplies designed for conventional 115 or 230 VAC input. The power supplies are designed for
redundant, fail-safe operation. If one should fail, the other can supply the power requirements of the entire
CommPlete Communications Server. Each PS9600 power supply has one LED indicator that indicates the
presence of all supply voltages.
Manual Organization
Chapter 1 Introduction
This chapter describes the MT3334HD8 and its LED indicators, gives its technical specifications, and
provides a guide to the organization of the manual.
2
modem is dialing, online, or answering a call. The LED flashes when the modem is in the busy-out
or out-of-service state.
CommPlete Communications Server
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