I'm hoping someone can give me a hand with settings this up.
I've received email from WxC with the following 

Your VFX Phone Number is: 098376390
MyVFX Username: xxxxxxxx@xport.co.nz
MyVFX Password: yyyyy
Number: 123456
Passcode: 56789
Settings:
Proxy: pan.wxnz.net
UserID: 98376390
AuthUser: yyyyyyyyyyyyyyyyyyy
AuthPassword: zzzzzzzzzzzzzzzzz

The problem is figuring where to enter this on the RTA1046VW.
I have
SIP Protocol UDP Port 5060
SIP Registrar Address www.xport.co.nz   Port 5060 
SIP Outbound Proxy  pan.wxnz.net   Port 5060          
SIP Proxy Server pan.wxnz.net Port 5060
Phone number 098376390
Name Me
Username AuthUser from WxC
Password AuthPassword from WxC