The push-to-talk (PTT) is a collaborative tool that enables users to exchange broadcasts to users subscribed to any of the 25 PTT channels, much like a walkie-talkie.

Users can transmit pages and PTT broadcasts using their handset, headset, or speakerphone. PTT broadcasts can be received on the speakerphone, handset, and headset.

PTT mode is intended primarily for Wi-Fi phones. In PTT mode, the phone behaves like a walkie-talkie. Users can broadcast audio to a PTT channel and recipients subscribed to that channel can respond to messages.

You can specify the same IP multicast address in the parameter ptt.address for both PTT and group paging. Use the parameters in the following table to configure this feature.

Note: The push-to-talk and group paging features use an IP multicast address. If you want to change the default IP multicast address, ensure that the new address does not already have an official purpose as specified in the IPv4 Multicast Address Space Registry.