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7) Create another SIP trunk called Trunk1. This will go to trunk1.freepbx.com. Enter the username and password. Set the SIP profile to External_ITSP and enable Registration.
8) Create another SIP trunk called Trunk2. This will go to trunk2.freepbx.com. Enter the username and password. Set the SIP profile to External_ITSP and enable Registration.
Note: Some ITSP's may only have 1 SIP Trunk. If this is the case skip this step.
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4) If there is any issues support will need the info up at https://wiki.sangoma.com/display/SBC/How + To + Capture + Logs when reporting an issue related to the SBC.
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