Nortel Meridian M3901, M3902, M3903, M3904, M3905 Installation Manual

N0023532 Page 1 of 5 Standard 2.00

Accessory Connection Module Installation Guide

This document describes how to install the Accessory Connection Module (ACM) (NTMN71xx). The ACM is an
optional hardware module that you install into the telephone footstand. The ACM provides a port, or ports, to connect
the accessory cartridge interface.

The M3902 has one accessory port. The M3903, M3904, and M3905 have two accessory ports.
Note: The M3901 does not support the ACM.

The plug-in cartridge allows the M3900 Series Digital Telephones to use the following accessories:

• Meridian External Alerter and Recording Interface (MEARI)

• Personal Directory PC Utility (M3904 and M3905)

• Full Duplex Handsfree (FDHF) cartridge (M3904 Phase III only)

•Analog Terminal Adapter (ATA)

• Computer Telephony Integration Adapter (CTIA)
Note: The Meridian SL-100 does not support the CTIA.

Figure 1: Accessory Connection Module (ACM)

553-8967

ACM

Footstand

ACM ribbon cable

Rectangular
opening for

ACM Installation

Telephone and footstand









Standard 2.00 Page 2 of 5 N0023532

Accessory Connection Module Installation Guide

Installing the
Accessory
Connection
Module

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. Ensure that it is
snapped in securely.

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.

12. Return the telephone to its original position.

You can access the ACM connector ports through a cutout on the base of the footstand. When you are ready to attach
an accessory, insert your selected accessory cartridge into the ACM.
There are two ports at the back of the telephone footstand on the M3903, M3904, and M3905. Each port can sup­port one cartridge accessory. The M3903, M3904, and M3905 can use a maximum of two cartridge accessories.
The M3902 supports one cartridge accessory.

Accessory
compatibility

The ACM provides up to two port connections. Some port types are not compatible. For
example, you cannot simultaneously use two data accessories that require a serial port.

The shape and size of the plug-in accessory cartridge prevents you from accidentally con­necting incompatible accessories. If you are purchasing two accessory cartridges, refer to
Table 1 on page 3 to see if you can use the two accessories with the M3903, M3904, or
M3905 at the same time. The M3902 supports only one accessory. See Table 1 on page 3
before you purchase optional hardware accessories.

Note: Not all accessories are supported on all telephones in the M3900 Series portfolio.

Contact your Nortel distributor for further information.