I have a Nokia 5630 XpressMusic with the latest firmware (version 11.020, so VoIP Rel 3.0) and SIP VoIP 3.x Settings v2.0. I have an asterisk PBX and I forwarded port 5060 UDP for SIP and 10.000 to 10.050 UDP for RTP.
This is the entry in sip.conf:
While with the WLAN everything works flawlessly, with 3g network it registers succesfully but I cannot enable the service and so I cannot make and receive calls!
It isn't a provider issue (Wind, Italy) because if I use another SIP client it works flawlessly.
Please help me make it works, because voip is one of the main reasons because of I bought this phone!