"Officially, Digium says it has roughly 400 reseller
partners. But if you lump in OEMs (original equipment makers), ISVs
(independent software vendors) and other types of partners, the
figure is about 550 partners, according to The VAR Guy's Open
Source 50, a survey that examines open source partner programs.
(Complete survey results will be published in January 2009).
"In the meantime, here’s another Digium data point: The
company has shipped more than four million ports for connecting
telephony systems to Asterisk."