15. Push to talk
Push to talk (PTT) over cellular is a two-way radio service available over a GSM/GPRS cellular
network (network service). PTT provides direct voice communication. To connect, press and hold the volume up
(PTT) key.
You can use PTT to have a conversation with one person or with a group of people having compatible devices.
When your call is connected, the person or group you are calling does not have to answer the phone. The
participants should confirm the reception of any communications where appropriate, as there is no other
confirmation whether the recipients have heard the call.
To check availability and costs, and to subscribe to the service, contact your service provider. 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.
87
.
While you are connected to the PTT service, you can use the other functions of the phone. The PTT over cellular
service is not connected to traditional voice communication, and therefore many of the services available for
traditional voice calls (for example, voice mailbox) are not available for PTT over cellular communications.