Some notes about what I'm doing. To memo and to share :)
Last year I was working on VOLTS - framework I'm using for testing VoIP deployments in automated way.
Right now it combines tools like voip_patrol and sipp in one tool with some extra features like database write/delete and media file check.
Not to repeat here all README, two links - github and the following video will tell it all.
Do you test your deployments?