To connect to an overhead paging system, you must first determine the type of interface involved. Overhead Paging systems can have any of four different interfaces:
- FXS (station port like on a SPA122)
- FXO (CO line interface like the second port of a SPA3102).
- RCA or paging port (line level audio)
- SIP (via Cyberdata v2 SIP Paging Adapter. See: Configure Cyberdata v2 SIP Paging Adapter
For systems with an FXS or FXO interface, a standard SIP ATA adapter will work fine. The Linksys SPA3102 is commonly used to connect to these types of FXO facing systems.
Note that it is not possible to connect a Polycom or Yealink multicast page group to a standard SIP ATA that does not support multicast paging. To page an overhead system connected via an ATA, the Polycom or Yealink phone must make a point-to-point (extension to extension) SIP call to the ATA.
For systems with a RCA (line level) interface, you will need a SIP capable paging alerter such as the Cyberdata SIP Paging Adapter (Part # 011233). The Cyberdata product will register as a SIP extension, and is able to emulate Polycom multicast paging so that it is possible to page from a Polycom phone to the overhead paging system. The following diagram shows the interaction between a Polycom phone with multicast paging, the ParagonVoIP hosted PBX, and an overhead paging system connected to a Cyberdata unit.
Ideally use a Linksys SPA3102's FXO port to connect to pins 5 & 6, turn Talk Battery OFF.
If using FXS: Add RAD-1A use 600ohm out to PA-2A ports 5/6. Plug FXS into phone line in on RAD-1A.
Ideally use a Linksys SPA3102's FXO port to connect to the RJ11 jack.
If using FXS: Order Valcom V-9970 & VP-412A (power) to adapt to FXS interface. Connection diagrams are attached.
Bogen TPU Series
Requires a TAMB2PS or UTI1, connects to an FXS port
Connects to FXS out of the box - just set DIP switch 1 to ON, 6 to off for CPC disconnect. Connect FXS gateway to the Station/Trunk jacks.
NOTE you may have to adjust the line-in voltage on the SPA3102.
Set PSTN Line>Dial Plan 1 to blank