Enables sending paging message to the selected paging groups in the network.
Only one connection at a time is allowed. In case of multiple running instances of the web UI on a browser, paging through the latest connection is allowed. A conflict alert is generated for older connections.
If no group is selected, the audio is played locally on the gateway's audio port.
Selecting it, selects all configured groups
Push and hold the button to start paging.
Release to stop paging.