One of our Asterisk telephony machines appeared to "leak" queue member agents. That is, refuse to ring them because they were supposedly busy.
debug python gdb asterisk
When compiling Asterisk with a PJProject debianized using the debian/ directory to Ubuntu/Trusty, I got the following compile error:
compile c linker asterisk pjsip
Getting the Asterisk PBX CLI to work more like you're used to from the (readline) bash shell can, be a time-saver.
readline asterisk editline inputrc
As of this writing, Debian testing (stretch) contains Asterisk version 13.1.0. The Debian source as GIT repository is here: https://anonscm.debian.org/git/pkg-voip/asterisk.git (browse)
packaging asterisk debian
Even after writing plenty of Asterisk PBX dialplan, I occasionally get bitten by the unintuitiveness of the parser.