AMX DTMF+ Interface AXB-DTMF+ - Manual (Page 7)

Configuration and Installation
3 AXB-DTMF+ DTMF+ Interface
Configuration and Installation
Setting the Internal Jumpers
There are two 2-position jumpers on the AXB-DTMF+ circuit card (FIG. 1). Each jumper is set to a
default pin setting. These jumpers are positioned to enable automatic call answering and select line
setting for a leased line or phone operation.
Auto Answer mode
The 2-position jumper JP2 selects auto answer ON or OFF mode when the system powers on.
When the auto answer is on, the AXB-DTMF+ answers on the ring set by the Send_Command
COUNT-XXX. If the ring count is set to 3, for example, auto answer picks up the call after the
third ring. The default count is 1 ring. The default jumper setting is shown in FIG. 2.
To change the auto answer default from ON to OFF :
1. Remove the AXB-DTMF+ unit cover.
2. Remove the jumper from pins 2 and 3, and place it on pins 1 and 2.
3. Re-install the AXB-DTMF+ cover onto the unit housing.
FIG. 1 Location of JP1, JP2 jumpers, and Audio In potentiometer.
FIG. 2 Auto answer jumper JP2 (default setting = Auto Answer ON)
JP1
JP2
Audio In pot
JP1 - Line selection
JP2 - Auto Answer
front
pin 3
pin 2
pin 1
Auto Answer ON
Auto Answer OFF