
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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