Nokia N81

Page 124
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Settings
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if no data has been transferred. If you select 
Unlimited
, the 
connection stays active until you disconnect it.
SIP settings 
SIP (Session Initiation Protocol) settings are needed for 
certain network services using SIP, such as video sharing. 
You may receive the settings in a special text message 
from your service provider. You can view, delete, or create 
these setting profiles in 
SIP settings
.
Internet telephony 
To create or edit an internet call profile to make internet 
calls, select 
Options
 > 
New profile
 or 
Edit
. Select 
SIP 
profiles
 and the profile you want to use for internet calls. 
Internet calls are not possible without the SIP profile and 
SIP settings.
Configurations 
You may receive trusted server settings from your service 
provider in a configuration message. You can save, view, or 
delete these settings in 
Configurations
.
Access point name control 
With access point name control service, you can restrict 
packet data connections and allow your device to use only 
certain packet data access points.
This setting is only available if your SIM card supports the 
access point control service.
To set the control service on or off or to change the 
allowed access points, select 
Options
 and the 
corresponding option. To change the options, you need 
your PIN2 code. Contact your service provider for the code.
Applications 
To edit the settings of some of the applications in your 
device, press 
, and select 
Tools
> 
Settings
> 
Applications
. The settings are also available in each 
application by selecting the settings option.
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