■ Push to talk
Push to talk (PTT) (network service) is a real-time voice over IP service
(network service) available over a GSM/GPRS network. Push to talk
provides direct voice communication connected with the push of a key.
Use push to talk to have a conversation with one person or with a group
of people.
Before you can use the push to talk service, you must define the
push to talk access point and push to talk settings. You may receive the
settings in a configuration message from the push to talk service
provider.
In push to talk communication, one person talks while the others listen
from the built-in loudspeaker. Speakers take turns responding to each
other. Because only one group member can talk at any time, the
maximum duration of a speech turn is limited. The maximum duration is
usually set to 30 seconds. For details of the speech turn duration for
your network, contact your network operator or service provider.
Phone calls always take priority over push to talk calls.
Besides the packet data counters, the phone registers only one-to-one
calls in the recent calls lists in
Log
. The participants should confirm the
reception of any communications where appropriate as there is no other
confirmation of 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. Note that roaming services
may be more limited than home network services.
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While connected to the push to talk service, you can use the other
functions of the phone. Many of the services available for traditional
voice calls (for example, voice mailbox) are not available for push to talk
communications.