MT56DSU2 Owner’s Manual
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Chapter 2 – Hardware Installation
2.1 Introduction
This chapter provides the information needed to configure and install the MultiDSU56K. This manual
assumes the reader is familiar with the function and operation of data communications equipment and is
technically qualified to provide installation service.
Safety Warning Telecom
1. Never install telephone wiring during a lighting storm.
2. Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
3. This product is to be used with UL and cUL listed computers.
4. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at
the network interface.
5. Use caution when installing or modifying telephone lines.
6. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote
risk of electrical shock from lightning.
7. Do not use the telephone to report a gas leak in the vicinity of the leak.
8. To reduce the risk of fire, use only No. 26 AWG or larger Telecommunication line Cord.
2.2 Default DIP Switch Settings
The MultiDSU56K printed circuit board contains one 12-position DIP switch block and one 4-position DIP
switch block as shown in Figure 2-1. They are located on the side of the circuit board, and are accessible
through the side of the chassis. Each individual switch is numbered, and can be in either the up (OPEN) or
down (closed) position.
The MultiDSU56K is shipped from the factory with the configuration DIP switches set to the most
common settings.
The factory-set (default) settings are: 56K bps data rate, DDS Clocking, RTS Forced On, DSR Forced On,
Sync Mode, Loopback Test Disabled, Test Pattern Disabled, Circuit Assurance Disabled, System Status
Disabled, 10-Bit Async Word Length, Elastic Store Disabled, and Anti-Streaming Disabled. If you need to
change any of these settings, refer to the Changing Defaults sections below.
