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13. 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 to, press
the 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 network operator or 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. 69.
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.
■ Push to talk menu
Select Menu > Push to talk.
• To connect to or disconnect from the PTT service, select Switch PTT
on or Switch PTT off.
• To view received callback requests, select Callback inbox.
• To view the list of PTT groups, select Group list.
• To view the list of contacts to which you have added the PTT address
received from the service provider, select Contacts list.
• To add a new PTT group to the phone, select Add group.
9238054_en_3.fm Page 63 Friday, January 26, 2007 2:21 PM