Push to talk
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PTT
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Push to talk (PTT) (network service) provides direct voice
communication connected with the push of a key. With PTT,
you can use your device as a walkie-talkie.
You can use PTT to have a conversation with one person or
with a group of people, or join a channel. A channel is like a
chat room: you can call the channel to see if anyone is online.
The channel call does not alert the other users; the users just
join the channel and start speaking with each other.
In PTT communication, one person talks while the other users
listen through the built-in loudspeaker. Users take turns
responding to each other. Because only one user can talk at
a time, the maximum duration of a speech turn is limited. For
details of the speech turn duration for your network, contact
your service provider.