AT&T MERLIN LEGEND Installation & Maintenance Manual page 175

Installation
12. Plug the D8W cord into the telephone wall jack.
Note: Before plugging the D8W cord into a wall jack, make
sure you do not need the terminating resistor adapter. If you
need it, see "Terminating Resistor Adapter Installation" below.
Terminating Resistor Adapter Installation
Connect a terminating resistor adapter to the D8W cord going to
the wall jack if there is no MLX telephone connected to the ISDN
7500B Data Module. This adapter provides 100 ohms to
terminate the line.
Modems
A modem is used at an analog data station to place and/or
answer data calls. It converts the digital signals from the data
terminal into analog signals for transmission over standard
telephone lines. It also converts incoming analog signals to
digital signals for acceptance by the data terminal.
Hardware Requirements
Most modems can be connected to the system. If a modem is
used in a modem pool, a 2224G modem or its equivalent must
be used (see "Modem Pool" later in this chapter).
If you use a modem with an MLX telephone, install a Multi-
Function Module (MFM) in the telephone to provide a tip/ring
interface for the modem. Connect the modem directly to the
MFM. If the modem is used with an analog multiline telephone, a
General Purpose Adapter is required to provide a tip/ring
interface for the modem. (See "Install the Multi-Function Module"
later in this chapter and "General Purpose Adapter" in Chapter 6
for more detailed information.)
Data Adapters 3-67