Works Great You Dont Need To Fill Out The Proxy Section In Most Cases. As soon as i am within range of my wirless router my Nokia auto connects and the cheep calls start

SIP SETTINGS
Profile Name: Extension number
Service Profile: IETF
Default Access Point: Your router name
Public User Name:sip: (extension number)@(Ip Address of your pc)
Use Compression: No
Registration: Always on
Use Security: No
Proxy Server Address: sip: (your ip address)
Relm: Ip Address
User Name: Extension Number
Password: (the one you used when configuring your Call Butler Extension)
Allow Loose Routing: Yes
Transport Type: Auto
Port:5060
Registrar Server
Registrar Server Name: Sip: (your ip addy)
Realm: (your ip addy)
User Name: As above
Password: As Above
Transport Type:Auto
Port: 5060