Since I had to look all over�for the correct settings and there was a lot of trial and error involved (specially for the Realm). Thanks to Engin Support that finally provided this info after logging a support request. The screenshots are from a Nokia E65, but should be applicable for similar Nokia phones. General Profile name: engin Service profile: IETF Default access point: {Your WLAN Access Point} Public user name: sip:{phone number}@voice.