You might try configuring the OBi directly and see if you have any better luck:
1. Disable your Internet connection.
2. Log into the OBi using at IP address returned by dialing ***1 with : username=admin / password=admin
3. Reset the OBi to factory defaults:
System Management -> Device Update -> Reset Configuration -> Press Reset to Start Process
4. After the OBi reboots, log back in and set:
System Management -> Auto Provisioning -> ITSP Provisioning -> Method : Disabled
System Management -> Auto Provisioning -> OBiTALK Provisioning -> Method : Disabled
Service Providers -> ITSP Profile A -> General -> Name : Localphone
Service Providers -> ITSP Profile A -> SIP -> ProxyServer :
localphone.comVoice Services -> SP1 Service -> AuthUserName : (sip username)
Voice Services -> SP1 Service -> AuthPassword : (sip password)
Voice Services -> SP1 Service -> CallerIDName : (callerid name)
Physical Interfaces -> PHONE Port -> PrimaryLine : SP1 Service
5. Enable your Internet connection.
Click Submit at the bottom of any page you make changes to.
Click Reboot in the upper right corner after all changes have been made.