diff -r 51a74ef9ed63 -r ae94777fff8f Symbian3/SDK/Source/GUID-3B0602F1-4294-43C4-9E7A-B1A33291C22F.dita --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Symbian3/SDK/Source/GUID-3B0602F1-4294-43C4-9E7A-B1A33291C22F.dita Fri Jun 11 12:39:03 2010 +0100 @@ -0,0 +1,42 @@ + + + + + +Establishing +a connection with destination networksDestination networks, also known as Service Network Access Points +(SNAPs) avoid the connectivity problems that are related to the access point +being fixed for the duration of the data connection. With the availability +of WLAN and other data bearers, the number of access points has grown considerably. + With WLAN, the availability of an access point can change frequently. A +fixed access point in selection often leads to a poor access point choice. +Because the network environment is now more dynamic, you can have either a +safe but slow connection, or a fast but unreliable connection. In practice +this means that the application is either stuck with using GPRS or the user +must continuously change the settings to point to the WLAN access point that +happens to be available. A fixed access point leads to non-optimal usage +of available connections, especially with applications that use long-lasting +data connections. +

Applications +should monitor the connection state by using platform services (such as Connection +Monitor Server API) and avoid polling and keep-alives. If the application +protocol mandates the use of timers, they should be tuned so that the control +data over the air is minimized.

+ +Defining +Connection Management Items + +Prompting +the user to select a destination network + +Starting +the Connection through the Destination Network + + +
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