C a l l f u n c t i o n s14 Copyright © 2005 Nokia. All rights reserved.whether the recipient(s) has(have)heard the call.To check availability and costs, andto subscribe to the service, contactyour network operator or serviceprovider. Note that roaming servicesmay be more limited than for normalcalls.Before you can use the push to talkservice, you must define the requiredpush to talk service settings.While connected to the push to talkservice, you can use the otherfunctions of the phone. The push totalk service is not connected totraditional voice communication,and therefore many of the servicesavailable for traditional voice calls(for example, voice mailbox) are notavailable for push to talkcommunications.Settings for push to talkSelect Options → Settings.For push to talk service settings,contact your network operator orservice provider. You may receive thesettings over the air.• Notification tone - A tone forincoming push to talk calls.• Default nickname - Yournickname shown to other users.• Show my PTT address - Select Noif you want to hide your push totalk address from the receivers ofyour push to talk group orone-to-one calls.• Domain - The default domainname.• Access point name - The accesspoint name for the push to talkservice.• Server address - The push to talkserver address.• User name - Your user name usedto enter the push to talk service.• PTT password - Your passwordused to enter the push to talkservice.• Realm - The name of the domainused for group userauthentication.After modifying the settings, restartthe push to talk application.Connecting to the push totalk serviceSelect Menu → Push to talk.Alternatively, press and hold thePush to talk key for a few seconds toconnect to the service.The push to talk applicationautomatically attempts to connectto the push to talk service. If thelogin is successful, the push to talksessions view opens.