In order to configure the unit to a different Caller ID signaling format, the top of the enclosure must be removed and shorting jumpers moved on the circuit board. Use the following steps and refer to Fig. B1on the next page.
Remove power to the unit.
Remove the top of the enclosure by first removing the two Phillips head screws on the bottom of the unit.
Slide the top of the enclosure off.
Locate the shorting jumpers on the circuit board (2 per channel and 1 main jumper) used for configuring the unit to Current Detection using Fig. B1
Slide off the appropriate jumper(s) and reconnect as per lower diagram.
Replace the top of the enclosure and replace the two screws.
