I spend another couple hours tonight banging my head on the keyboard fighting a "No authority found" error in Asterisk. This seems to come up pretty regularly when I bring up new IAX trunks, but this one was an old trunk I was trying to recover. I'm not sure if this is a new feature in Asterisk 13 or what, but turns out that incoming matching rules only look at "type=user" (or "type=friend") entries. That's different from SIP channels which will match on either one. So lesson learned.

There's a little known feature of Asterisk which allows you to set the SIP URI independently of the To header. This is sometimes useful, although not often.

If you wanted to put 1234 into the request URI and 5678 into the To header you could use a Dial string as such:

exten => s,n,Dial(SIP/peername/1234!5678)

When adding a new DUNDi peer in Asterisk, after updating dundi.conf and using astgenkey to create the RSA public/private key pair, Asterisk will emit the following error:

pbx_dundi.c:1331 update_key: No such key 'foo' for creating RSA encrypted shared key for '00:01:02:03:04:05'!

I will be at the 2014 OpenWest conference with a presentation titled "Secure Your VoIP with Asterisk and Kamailio". Looks like they have me penciled in for 3pm on May 9th. Watch the schedule for changes and take a look at all the other awesome talks as well. I've attended and presented a number of times at OpenWest (aka UTOSC) and it's always a great venue.

And with that, I've uploaded all my slides for the Utah Open Source Conference. My goal was to have them ready by last night, so I'm a bit late. Still better than last year where I only had one presentation and I was still updating my notes the night before. If you're looking for me make sure to check the schedule as there have been some changes, and there may well be more to come. Also look for my late addition where I'll be joining Gabe Gunderson of izeni to talk about VoIP (specifically FreeSWITCH and Asterisk).