Under Registrar Server and Proxy Server :
Device setup guide — SIP / VoIP configuration for Symbian^3 v1.0 (English) sip voip 3 1 settings symbian 3 v1 0 en full
Setting up VoIP on these legacy devices typically requires two main parts: creating a standard SIP profile and then using the "Advanced VoIP Settings" application to activate it. 1. Basic SIP Profile Creation Under Registrar Server and Proxy Server : Device
Before starting, ensure your phone has the application installed. sip voip 3 1 settings symbian 3 v1 0 en full
Scroll down to and select it.