Installed OctroTalk on my Lumia 920 for my SIP needs. OctroTalk, an integrated instant messaging application (google), VoIP call, SIP call, video chat / conference, live video streaming and P2P file transfer application. It is available for Apple (iPad, iPhone, OS X), Nokia Smartphones (Symbian OS), Android phone, Android tablet, Window phone and Windows desktop, seems to be a powerhouse application.
Here is the setting for messagenet
Username= URI of your Messagenet
Password= password of your URI
Proxy= sip.messagenet.it : 5061
Realm= sip.messagenet.it
From-user= URI of your Messagenet
From-domain= sip.messagenet.it
Register-proxy= sip.messagenet.it : 5061
Expire-second= 3660
Register= true
Register-transport= udp
Retry_seconds= 30
contact-params: tport=tcp
ping: 15
Put your Lumia in VoIP and SIP use!
Good voip’ng
