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4
Swing the footstand away from the telephone base and remove from the
telephone.
5
Attach the wall mount bracket onto the back of the telephone by placing
the telephone at the top edge of the wall mount bracket and sliding the
telephone into place.
6
Mount the wall mount bracket, attached to the telephone onto the screws
located on the wall.
Installing the Accessory Connection Module (ACM)
To install the ACM:
1
Disconnect the line cord from the telephone base before installing the
ACM.
2
Slide the footstand down (using the plastic hinges) about 7 mm (1/4 in.)
and swing the footstand away from the telephone base.
3
Snap the ACM into the rectangular opening on the back of the telephone.
4
Connect the ACM cable to the back of the telephone.
5
Put the ACM attached ribbon cable into the track running down the back
of the telephone base.
6
Put the hard plastic cable cover over the ACM ribbon cable.
7
Snap the ACM plastic cable cover into place.
8
Place the footstand on the hinges.
9
Swing the footstand back into place.
10 Snap the footstand into a non-movable position.
11 Reconnect the line cord to the telephone base.
12 Return the telephone to an upright position.
There is a cutout on the base of the footstand which displays the ACM
connector ports. When ready to attach an accessory, insert the appropriate
cartridge into the port slot. There is one accessory port available on the
M3902. There are two accessory ports available on the M3903, M3904 and
M3905.
M3900 installation and configuration
Telephones and Consoles
Page 399 of 532
Description
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