When updating an existing 1.1.3 system to 2.1.1, the SIP-Gateway settings will change. Please check BEFORE updating, if your provider is already certified for Version 2.1.1. Beside the FXO or BRI/ISDN interfaces following SIP trunk providers are certified for version 2.1.1:
trunking basic
extended ConnectRextended
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 |