Select PTT+ .
Utilize the 5-way navigation pad to highlight and the center button to select.
Alternatively press the Push To Talk button (located on the left side of the device).
From the Contacts tab, select the appropriate contact then press the Push To Talk button.
Selected when a check mark is present.
While holding the Push To Talk key the PTT icon turns red indicating your voice can be heard by the other call participants.
Release the PTT button to allow the other call participants to speak.
After the initial chirp tone the PTT icon turns gray indicating the call is connected.
To end the call, press the Menubutton then select End Call.