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10 Voice Module Installation Guide

Jumpers and Connectors

This section describes the jumpers and connectors contained on the

Voice module board.

Jumpers

The Voice module board contains the following three

jumpers:

Ø Jumper 1, described below.

Ø Jumper 2, for future use.

Ø Jumper 3, for future use.

Jumper 1

Jumper 1 is used to select an external or internal microphone

for recording messages. The following diagram shows the

placement of the of the selector on jumper 1 when recording

messages externally and internally:

EXT. INT.

Ø External: Place the selector on the (EXT.) pins as

shown in the picture when recording messages from

a microphone located on an MBU.

Ø Internal: Place the selector on the (INT.) pins as

shown in the picture when recording messages from

the microphone located on the Voice module

board.

NOTE:

The Jumper 1 selector must always be placed in either the EXT or the

INT position.

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