Adding Or Replacing A Voice-Processing Card - AT&T MERLIN MAIL System Programming And Maintenance Manual

Installation
Adding or Replacing a
Voice-Processing Card
Customers with a two-port configuration may want to upgrade to a four-port
configuration to support a greater volume of calls or subscribers. To upgrade
from two to four ports, you need to add a voice-processing card.
CAUTION:
Only a qualified installer should open the MERLIN MAIL—ML unit, and
add or replace voice-processing cards.
WARNING:
Attach a grounded wrist-strap to the bare skin of your body before
handling any components sensitive to electrostatic discharge. The wrist
strap should be connected to the ground through a one meg ohm
resistor (usually built into the grounding cord).
1. Switch the MERLIN MAIL—ML unit off. (The on/off switch is located in the
center of the rear panel. See Figure 2-6.)
2 . Unplug the power cord.
WARNING:
The MERLIN MAIL—ML unit must be unplugged before
removing the cover. Hazardous voltage is inside. Failure to
comply could cause electric shock.
3. Disconnect all modular telephone cords and the modem cable from the
MERLIN MAIL—ML unit.
4. Loosen the captive retaining screw securing the cabinet to the wall
mount and cable manager bracket as shown in Figure 2-9.
2-16

Adding or Replacing a Voice-Processing Card