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Push to talk
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12. 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 the volume up
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
people you are calling do not have to answer the phone. The participants
should confirm the reception of any communication 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. 88.
While you are connected to the PTT service, you can use the other
functions of the phone. The PTT service is not connected to traditional
voice communication; therefore many of the services available for
traditional voice calls (for example, voice mailbox) are not available for
PTT communication.
■ Connect and disconnect
To connect to the PTT service, select Menu > Push to talk > Switch PTT
on. indicates the PTT connection. indicates that the service is
temporarily unavailable. The phone automatically tries to reconnect to
the service until you disconnect from the PTT service. If you have added
channels to the phone, you are automatically joined to the active
channels.
To disconnect from the PTT service, select Switch PTT off.