First of all, you should know what your Acanac settings are. If you don't know, ask Acanac support.

When a friend of mine asked for setting information, he received the fallowing:




Proxy and Registration
-----------------------
Proxy: 66.49.255.42
Outbound Proxy: 66.49.255.42
Register Expires: 60
Proxy Falback Intvl: 60
Voice Mail Server: 66.49.255.42



Subscriber Information
------------------------
Display Name: YOUR OWN NAME
User ID: YOUR ACANAC PHONE NUMBER
Passorrd:YOUR SIP PW 
Auth ID:YOUR ACANAC PHONE NUMBER



You need to ask Acanac for your own SIP account information. To see where you need to type that information, look at the example.