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Connecting Data Equipment
Modem Pool Hardware Requirements
■ Modem (one per data module)
Most modems can be connected to the system. If a modem is used in
a modem pool, use a 2224G modem. The modem option settings in
this section are specifically for this modem.
■ 7500B data module (one per modem)
■ WP90110-L7 power supply (one per standalone data module)
or a 277A multiple mounting power supply
NOTE:
You can configure the 7500B as a standalone data module using a
WP90110-L7 power supply or set up a multiple-mount arrangement
using a 277A multiple mounting power supply. The 277A provides
a common power supply for up to eight data modules. Both the
power unit and the data mounting require a 115 VAC power outlet.
Neither is provided with the data module and both must be
ordered separately.
See the 7500B data module documentation for instructions on
installing the 277A for a multiple-mount arrangement.
■ D8W cords (two per modem-and-data module pair)
■ D4BU cords (one per modem-and-data module pair)
■ EIA-232-D cables (one per modem-and-data module pair)
■ 440A4 terminating resistor (one per data module)
See Figure 6-8 and the next section, “Setting Up a Modem Pool,” for detailed
procedures.
Modem Pools
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