Connectivity90 Copyright © 2007 Nokia. All rights reserved.End connectionsTo end a connection, scroll to the connection, and selectOptions > Disconnect.To end all connections, select Options > Disconnect all.Push to talkPush to talk (PTT) (network service) is a real-time voiceover IP service (network service) available over a GSM/GPRS network. PTT provides direct voice communicationconnected with a single keypress.Before you can use the PTT service, you must define thePTT access point and PTT settings.In PTT communication, one person talks while the otherslisten. Speakers take turns responding to each other. Onlyone group member can talk at a time. The length of timeof each turn is limited.Phone calls always take priority over PTT calls.Besides the packet data counters, the device registers onlyone-to-one calls in the recent calls lists in Log. Theparticipants should confirm the reception of anycommunications where appropriate as there is no otherconfirmation of whether the recipients have heard thecall.To check availability and costs, and to subscribe to theservice, contact your service provider. Note that roamingservices may be more limited than home network services.Many of the services available for traditional voice calls(for example, call mailbox) are not available for PTTcommunications.Define a PTT access pointMany service providers require you to use an internetaccess point for your default access point. Other serviceproviders allow you to use a WAP access point.Settings for PTTFor PTT service settings, contact your service provider.To view and change PTT settings, select Menu >Settings > Connectivity > PTT > Options > Settings >User settings or Connection settings.User settingsAccepted list calls — To see a notification of incomingcalls, select Notify. To answer PTT calls automatically,select Auto-accept. If you do not want to receive PTT calls,select Not allowed.PTT call alert tone — Select the tone for incoming PTTcalls. If you want the incoming call alert setting for PTT tofollow your profile settings, select Set by profile. For