When updating an existing 1.1.3 system to 2.2.0, the SIP-Gateway settings will change. Please check BEFORE updating, if your provider is already certified for Version 2.x.x
Beside the FXO or BRI/ISDN interfaces following SIP trunk providers are certified for version 2.x.x
   
  
trunking basic
 extended ConnectR extended
To see the complete list of providers check out our ITSP interop pages.
After the update, check the status and the settings under Administration --> Routes --> SIP-gateways and Administration --> System status --> SIP status |