To set the time-out period after which data calls automatically end if no data has been transferred, select Online time. SelectUser defined to enter the time yourself or Unlimited to keep the connection active until you select Options > Disconnect.Session initiation protocol (SIP) settingsSelect > Tools > Settings > Connection > SIP settings.Session initiation protocols (SIP) are used for creating, modifying, and terminating certain types of communication sessionswith one or more participants (network service). SIP profiles include settings for these sessions. The SIP profile used by defaultfor a communication session is underlined.To create a SIP profile, select Options > New SIP profile > Use default profile or Use existing profile.To select the SIP profile you want to use by default for communication sessions, select Options > Default profile.Edit SIP profilesSelect SIP settings > Options > New SIP profile or Edit, and select from the following:• Profile name — Enter a name for the SIP profile.• Service profile — Select IETF or Nokia 3GPP.• Default access point — Select the access point to use for the internet connection.• Public user name — Enter your user name received from your service provider.• Use compression — Select if compression is used.• Registration — Select the registration mode.• Use security — Select if security negotiation is used.• Proxy server — Enter the proxy server settings for this SIP profile.• Registrar server — Enter the registration server settings for this SIP profile.The settings available for editing may vary.Edit SIP proxy serversSelect SIP settings > Options > New SIP profile or Edit > Proxy server.Proxy servers are intermediate servers between a browsing service and its users used by some service providers. These serversmay provide additional security and speed up access to the service.Select from the following:• Proxy server address — Enter the host name or IP address of the proxy server in use.• Realm — Enter the proxy server realm.• User name and Password — Enter your user name and password for the proxy server.• Allow loose routing — Select if loose routing is allowed.• Transport type — Select UDP or TCP.• Port — Enter the port number of the proxy server.Edit registration serversSelect SIP settings > Options > New SIP profile or Edit > Registrar server.Select from the following:• Registrar server address — Enter the host name or IP address of the registrar server in use.• Realm — Enter the registrar server realm.• User name and Password — Enter your user name and password for the registrar server.• Transport type — Select UDP or TCP.• Port — Enter the port number of the registrar server.Net call settingsSelect > Tools > Settings > Connection > Internet tel..To create a new net call profile, select Options > New profile.To edit an existing profile, select Options > Edit.ConfigurationsSelect > Tools > Settings > Connection > Configurations.You can receive messages from your service provider or company information management containing configuration settingsfor trusted servers. These settings are automatically saved in Configurations. You may receive configuration settings for accesspoints, multimedia, or e-mail services, and IM or synchronization settings from trusted servers.S e t t i n g s© 2007 Nokia. All rights reserved. 70