■ 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. PTT provides
direct voice communication connected with a single keypress.
Before you can use the PTT service, you must define the PTT access point
and PTT settings.
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In PTT communication, one person talks while the others listen. Speakers
take turns responding to each other. Only one group member can talk at
a time. The length of time of each turn is limited.
Phone calls always take priority over PTT 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 service provider. Note that roaming services may be more limited
than home network services.
Many of the services available for traditional voice calls (for example,
call mailbox) are not available for PTT communications.