Push to talk
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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 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. 61.
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 the 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.
• To set the PTT settings for use, 
select PTT settings.
• To set the required settings for 
the PTT connection, select Config. 
settings.
• To open the browser and to 
connect to the PTT network 
9247786_6103_2_en_hk.fm  Page 56  Friday, February 24, 2006  4:41 PM