I have 15 or so installations and I currently manage 11 of them.. the other 4 were test installs for myself before I started managing them for other clients. My biggest client is a company that connects deaf users to hearing users over voip. I also have a client that I wrote a lead generation application that is fully integrated with asterisk and I manage the server(s) involved in that.
I have my own asterisk server that I actually have a few clients that use my service as there only telephone service, as well as my office and home phone calls.
Thank you for this opportunity,
-Scott Howell