To change the voice command, select Profiles >Options > Change command.Voice command settingsTo switch off the synthesiser that plays recognisedvoice commands in the selected device language,select Options > Settings > Synthesiser > Off.To reset voice recognition learning when the main userof the device has changed, select Remove voiceadapts..Push to talkSelect Menu > Communic. > PTT.Push to talk (PTT) (network service) provides directvoice 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 personor with a group of people, or join a channel. A channelis like a chat room: you can call the channel to see ifanyone is online. The channel call does not alert theother users; the users just join the channel and startspeaking with each other.In PTT communication, one person talks while theother users listen through the built-in loudspeaker.Users take turns responding to each other. Becauseonly one user can talk at a time, the maximum durationof a speech turn is limited. For details of the speech turnduration for your network, contact your serviceprovider.PTT settingsSelect Options > Settings and select User settings todefine your preferences for PTT, or Connectionsettings to change the connection details. Contactyour service provider for the correct settings.Tip: You may also receive the settings in amessage from the provider of the PTT service.Log in to PTT serviceIf you have set Application start-up on in Usersettings, PTT automatically logs in to the service whenstarted. If not, you must log in manually.To log in to the PTT service manually, select Options >Log in to PTT.When the Ringing type setting of your device is set toBeep once or Silent, or there is an ongoing phone call,you cannot make or receive PTT calls.Make a PTT callTo make a PTT call, select Options > Contacts, selectone or several contacts from the list, and press thevoice key. Remember to hold the device in front of youduring the call so you can see the display. The displayinforms you when it is your turn to speak. Speaktowards the microphone, and do not cover theloudspeaker with your hands. Press and hold the voicekey the entire time you are talking. When you havefinished talking, release the key.To end the PTT call, press the end key.84 Phone