Installation guide

Installation 56
Synapse Installation Guide
 To install an overhead paging system:
1. Remove the plastic cover from the FXS 1 or FXS 2 port to be used on the ATA.
2. Plug the telephone line from the OHP device into the FXS 1 or FXS 2 port, or plug an audio cable from the OHP device
into the ATA AUX OUT jack, as shown in Figure 41 on page 55, depending on the requirements of the paging system.
If you need to hard-wire a connection between your OHP device and the ATA AUX OUT jack, you can use the supplied
auxiliary audio cable as follows:
a. Remove the 3.5 mm audio jack from one end of the cable.
b. Strip enough shielding from the cable to expose the three wires inside.
c. Identify the Tip (Left channel) and Ground wires. Depending on the cable, the Tip wire may be white, the Ground wire
may be bare/unshielded, and the Ring (Right channel) wire may be red, as shown in Figure 42. You can use a voltmeter
to properly identify the wires.
Figure 42. Hard-Wiring a Stereo Cable to the OHP
d. Trim the Ring (Right channel) wire to ensure it does not contact other wires or terminals.
e. Connect the Ground wire to the negative terminal and the Tip wire to the positive terminal on the OHP device.
f. Plug the 3.5 mm jack on the other end of the cable into the AUX OUT port on the ATA.
3. Enable the OHP device in the WebUI. See the “Setting Up Overhead Paging” on page 122 for information on configuring
an OHP device.
3.5 mm stereo plug
to ATA AUX OUT
Ground
Tip (Left Ch.)
Ring (Right Ch.)
(Do not wire to OHP)