Making and receiving a push to talk call
Set the phone to use either loudspeaker or earpiece for push to talk
communication. When the earpiece is selected, you can use the phone normally to
your ear.
Warning: Do not hold the device near your ear when the loudspeaker is in use,
because the volume may be extremely loud.
When connected to the push to talk service, you can make or receive group calls or
one-to-one calls. One-to-one calls are calls you make to only one person, instead
of a group.