Symbian^3 v1.0 ties the SIP registration to a specific access point. If the APN changes mid-call, the session drops.
Once finished, restart your device to register the SIP client. sip voip 3 1 settings symbian 3 v1 0 en full
: Detailed instructions for setting up the required Internet Access Points (IAP) on Symbian^3 can be found at specific SIP provider's server details to plug into these settings? Symbian^3 v1
Create a new service, linking it to the SIP profile you just created. the session drops. Once finished