Synthesiser — Activate the synthesiser that plays recognised voice commands.Playback volume — Adjust the speech volume.Recognition sensitivity — Adjust the voice command recognition sensitivity.Command verification — Select whether the voice commands are acceptedautomatically, manually, or by voice verification.Remove voice adapts. — Reset voice recognition learning when the main user of thedevice has changed.Push to talkSome features may not be available in your region. For availability, contact your serviceprovider.Select Menu > Applications > PTT.About push to talkPush to talk (PTT) (network service) is a real-time voice-over-IP service that uses thecellular network. PTT provides direct voice communication, with the push of a key. UsePTT to have a conversation with one person or with a group of people.Before you can use PTT, you must define the PTT settings (access point, PTT, SIP, XDM,and Presence). You may receive the settings in a special text message from the serviceprovider that offers the PTT service. You can also use the Settings wizard application toconfigure PTT, if supported by your service provider. For more information on the PTTapplication, see the user guide for your device or your local Nokia website.In PTT communication, one person talks while the others listen through the built-inloudspeaker.Speakers take turns responding to each other. Because only one group member can talkat any time, the maximum duration of a speech turn is limited. The maximum durationis usually set to 30 seconds. For details of the speech turn duration for your network,contact your service provider.Phone calls always take priority over push to talk activities.Log in and exit PTTWhen you start the push to talk (PTT) service, you are automatically logged in andconnected to the channels that were active the last time you closed the application. Ifthe connection fails, to attempt to log in again, select Options > Log in to PTT.To exit PTT, select Options > Exit.74 Phone