Nortel Meridian M3900, Reference Manual

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Installation 75
Meridian SL-100 M3900 Meridian Digital Telephones Reference Guide
Headset consideration
Test the headset with the telephone before use. In a noisy environment,
an amplified headset is an option. When using the amplified headset,
there are two choices of volume control: the rocker control on the
telephone and the switch on the headset. The user should adjust the
telephone volume, before adjusting the headset volume.
To provide the best communication with the least amount of distortion,
the amplifier should have a higher setting than the telephone volume
control.
Refer to your representative for the latest product bulletin from Nortel
Networks recommending headset types for use with the M3900 Series
digital telephone.
Accessory Connection Module (ACM)
The following steps explain how to install the ACM.
Procedure 10
Install the ACM
1 Press the release latch on the back of the telephone.
2 Pull the footstand away from the back of the telephone.
3 Disconnect the line cord from the base of the telephone.
4 Move the telephone down 7 mm (1/4 inch), then use the hinges to swing the
telephone footstand away from the base of the telephone.
5 Snap the ACM into the rectangular opening in the telephone footstand.
6 Plug the ACM cable connector into the back of the telephone.
7 Place the ACM attached ribbon cable into the track running down the
telephone base.
8 Snap the plastic cable cover in place over the ACM ribbon cable.
9 Connect the line cord into the base of the telephone.
10 Connect the hinges to the telephone base and swing the footstand back in
place.
11 Snap the footstand into a fixed position.
This procedure is now complete
12 Return the telephone to its original position.