Faktortel IAX2 reinvite Gotchas

Hey kids - if you use Faktortel (or even other providers), make sure you allow reinvites in your Asterisk iax.conf for that connection. Otherwise bad stuff happens. We recently discovered that if we didn’t allow reinviting for Faktortel then we’d occasionally get one way audio or no connection. You see they have a group of servers (not just one) that each time you lookup iax.faktortel.com.au will give you a different address so that they can spread the load.

But on the same note - don’t go mad and allow inviting for everyone - bad stuff goes on when you’re behind a NAT and your extension tries to make its own connection to the remote host - where does the data flow? Nobody knows…. some say it gets stuck behind the couch…

Tags: Faktortel