Nokia 5310 XpressMusi EN - Manual (Page 42)

Push to talk
Push to talk (PTT) is a two-way radio service available
over a GPRS cellular network (network service).
You can use PTT to have a conversation with one person
or with a group of people (channel) having compatible
phones. While you are connected to the PTT service,
you can use the other functions of the phone.
To check availability, costs, additional features and to
subscribe to the service, contact your service provider.
Roaming services may be more limited than for normal
calls. This feature may not be available, depending on
your phone.
For more information about signing up for the PTT
services and the usage, contact your service provider.
To connect to the PTT service, select Menu > Push to
talk > Switch PTT on.
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