14. Push to talk
Select Menu > Push to talk.
Push to talk (PTT) over cellular is a two-way radio service available
over a GPRS cellular network (network service).
You can use PTT to have a conversation with one person or with a
group of people (channel) having compatible devices. While you are
connected to the PTT service, you can use the other functions of the
phone.
To check availability and costs, and to subscribe to the service,
contact your network operator. Roaming services may be more
limited than for normal calls.
Before you can use the PTT service, you must define the required PTT
service settings. See “PTT settings,” p. 85 and “Configuration
settings,” p. 86.