|Web Configuration Parameters and Layouts / Client Timeout Parameters|
The default client timeout is 60 seconds.
This parameter is ignored under iOS6. Requests are aborted after 60 seconds by the client.
This timeout is often set to several minutes to ensure that e. g. the full synchronization request can be carried out without encountering a timeout. This timeout is also the time span until a "Server not available" error is generated if a request is not responded by the server.