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11. DCP Mode 2 Installation and Administration
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This chapter explains how to install and translate stand-alone modem pools and rack-mounted (D-Lead)
modem pools. Once the modem pools are installed and translated, any problems should be directed to the
Technical Service Center (TSC).
INSTALLING A 2296A AND MTDM IN A MODEM POOL
The following shows how to install and administer 2296A modems and MTDM data modules in their
multi-mount configuration. This arrangement uses a standard 72-inch cabinet with multiple mounts.
WARNING
Do not apply power to the cabinet or any related equipment until all components are installed
and ready for service.
Install the Modem Pool Cabinet
The modem pool cabinet requires a 57 to 63 Hz, 105 to 129 VAC circuit. Expect to draw a maximum of
1200 watts. (This circuit should come from the same AC Distribution panel that powers the AUDIX, and
power should not be controlled by the switch. The circuit should not share power with room lighting or
other electrical devices that could cause electrical interference.)
A power strip should be installed at the back of the cabinet along the bottom left-hand side. The vertical
side rails on the left and right sides of the cabinet go in the fifth hole from the front. The equipment
mounting flanges on the rails face the front.
Install the Multiple Mountings
Each mounting plugs into the cabinet power strip and will draw 52 watts of power. The mountings operate
in an ambient temperature range of 40 to 120 degrees F (4.44 to 48.8 degrees C) and a relative humidity
range of 5 to 95 percent, noncondensing. The altitude limit is 10,000 feet above sea level.
Figure 11-1, 72-Inch Data Cabinet and Multiple Mountings, shows how the mountings are to be installed.
The 105A mounting can be modified to fit in a 19- or 23-inch space by changing bracket positions.
11-1