my SP1 is use by google voice,
my SP2 is use by Voipstunt
proxyserver is
sip.voipstunt.com which is their, I used a pc sip software it works without problem
I can dial **2number works
not to an sip uri
my config
Service Providers -> ITSP Profile B -> SIP -> ProxyServer :
sip.voipstunt.com Voice Services -> SP2 Service -> AuthUserName : myuser
Voice Services -> SP2 Service -> X_RegisterEnable : (checked)
Voice Services -> SP2 Service -> X_ServProvProfile : B
Jerome