I love how it's editable and you can add to it and it works perfectly even better than paid softwares that being offered from big competitors.
If you have a competent Linux staff with some knowledge of Linux bash, PHP, MySql and Asterisk, you are good to go. Community support is fantastic.
It took time to come into but all the features are just amazing. And more important, support from community and the authors are just first class.
There are almost too many features. You can get lost in all of the configuration settings.
Probably one of the problems with this app is its interface, it is very rudimentary, it seems more a tool from when the internet started, and html was the only language to design web pages.
Another problem that it generates is with cookies, sometimes it does not connect since the browser is hung with previous cookies.