To disconnect from the PTT service, select Switch PTToff.You may assign a default function to the PTT (volumeup) key to open the channel list, the contacts list, or asingle channel or contact. See "PTT settings," p. 55.Make and receive a PTTcallWarning: Do not hold the device near your earwhen the loudspeaker is in use, because the volumemay be extremely loud.To make a channel call, a one-to-one call, or a call tomultiple recipients, you must hold the PTT (volume up)key as long as you talk. To listen to the response, releasethe PTT (volume up) key.Check the login status of your contacts in Menu > Pushto talk > Contacts list: - person available, -person unknown, - person does not want to beMake a channel callTo make a call to a channel, select Channel list in thePTT menu, scroll to the desired channel, and press andhold the PTT (volume up) key.Make a one-to-one callTo start a one-to-one call, select Menu > Contacts >Names, or Menu > Push to talk > Callback inbox,Channel list, or Contacts list. Select a contact, amember, or a nickname, and press and hold the PTT(volume up) key.Make a PTT call to multiplerecipientsYou can select multiple PTT contacts from the contactlist.1. Select Menu > Push to talk > Contacts list, andmark the desired contacts.2. Press and hold the PTT (volume up) key to start thePush to talk-530A-4232-B1A2-AD8C3D7641D3.en.200703261012075611174893494768/en/1/GUID-E9B10502-9BEE-452E-A2EB-4A477D49C6EB.xml-530A-4232-B1A2-AD8C3D7641D3.en.200703261012075611174893494768/en/1/GUID-E9B10502-9BEE-452E-A2EB-4A477D49C6EB.xml