Make sure you have the following before setting up your Snom PA1:

  1. A power source for the Snom PA1 adapter, which is usually shipped without a power adapter. You can power Snom PA1 in the following ways:
    • Power over Ethernet (PoE) if the functionality is supported by your LAN switch
    • A PoE injector
    • A power supply that has been purchased separately
  2. A headset with a regular auxiliary connector, which is the easiest way of finding the paging adapter’s IP address.


Follow the steps below to complete the initial setup of the Snom PA1 Paging Adapter:

  1. Plug the SNOM PA1 adapter into the same network as your Ooma Office phones. If your network does not use PoE, you will need an external power adapter for the Snom PA1 (sold separately), or PoE injector. The device will boot up when it has power.
  2. When the device has finished booting up, the Call LED indicator will be lit green and the Power LED indicator will be lit red.
  3. Next, you will need to use a headset to find the adapter’s IP address. Connect the headset to the paging adapter’s audio jack and press the IP/Reset button. You will hear the IP address through the headset.
  4. Type the adapter’s IP address in a web browser on a computer that is connected to the same network as your Ooma Office system. You will need to make the following changes in the adapter’s web management interface:
    • On the System Information Page, confirm that the adapter is running firmware version 8.7.5 or above. Upgrade the device if necessary via the Setup > Software Update page.
    • On the Setup > Identity 1 page, visit the SIP/RTP tab. Set the Multicast Relay Address and listening port to Be sure to click Apply and then Save.
    • On the Setup > Advanced page, visit the SIP/RTP tab. Scroll to the bottom of the page and check Enable Multicast Support. Enter into the IP address field. Be sure to click Apply and then Save.
  5. Connect the paging system’s audio input to the Snom PA1 adapter’s speaker interface.

If you get stuck setting up your paging adapter or if you want more information about using the adapter, you can either check out the Snom PA1 documentation, contact your vendor, or contact Snom directly for additional support.

Once the paging adapter has been connected to your overhead speakers and your Ooma Office system, you can follow the instructions here to set up a Programmable Button on any compatible Yealink IP phone. The only way to initiate a paging call to the overhead paging system is via a programmable button that has been assigned the Multicast Paging function.