VoIP FAQS Fallback

In which situation is a fallback of a call performed on IPBRICK?

A fallback happens when you have more than one telephony line configured on IPBRICK and your default line fails when your attempting to make a call.

Possible reasons for the execution of a fallback and IPBRICK's respective answers:

• Fail on the default service: SERVICE UNAVAILABLE;
• Busy channels: CONGESTION;
• Fail on the answer to sipsak: ping SIP (which we perform before sending the call).