My telephony provider will failover to our backup server as follows:
Calls will be directed to the backup URI when the server linked to the primary URI is considered unavailable. This may happen if:
- The primary URI responds with a 503 error response
- The primary URI does not respond with a 100 <TRYING> to Voxbones <INVITE> within 5 seconds.
We had a case where our AGI server failed, but calls were not being redirected. In the Asterisk logs we could see:
[Dec 29 03:29:53] WARNING[C-00001a3c] res_agi.c: Couldn’t connect to any host. FastAGI failed.
[Dec 29 03:29:55] WARNING[C-00001a3d] res_agi.c: Connecting to ‘127.0.0.1:4573’ failed for url ‘agi://127.0.0.1/line.agi’: Connection refused
The problem with the AGI we have fixed, but I’d like to ensure that failover will occur correctly. The dialplan is simply the below:
exten => _140X,1,Agi(agi://127.0.0.1/line.agi)
If that can’t be reached, should it fail with a 503 error response ?
If not, is there anyway with the Dialplan that I can enforce it to ?
Thanks for your help,