These are the settings for Engin VOIP with 740xV & 6404V series.
Registrar Address: byo.engin.com.au Registrar Port: 5060 Expire: 900 seconds User Domain/Realm: byo.engin.com.au (Replace with the one given to you by Engin) Outbound Proxy Address: syd.byo.engin.com.au (Replace with the one given to you by Engin) Outbound Proxy Port: 5060
