@rajil I am breaking my head over getting SIP on openvpn working. Do you think we can converse at a convenient time and get this working? I am using an OpenVPN by HideIPVPN.com
They also have an HTTP proxy for the same account but I guess that only relays traffic for HTTP.
Thanks to @rajil.s for helping out. I eventually had to use the maemo-update-resolvconf that comes with openvpn and that solves SIP over OpenVPN both on wifi/gprs.
@tele, me too suffering from same type of problem. Neither i can find any dialer software nor configure sip account. If you find any solution then i look forward hearing from you 0 5 5 9 4 9 5 4 6 0