There are a number of fixes, improvements, and features that have come into play recently.
I've only formally been on the project for a couple months but I'd love to spend more time on it too. One of the things slowing me down is finding out exactly what the community uses, needs, etc and then working to make that happen.
A few things high on my (personal) agenda are: formal support for <SIP> (launched yesterday), better support for Queue, internationalization, and some infrastructure improvements around upgrades, plugins, etc.
Feel free to drop me an email (check my profile) and we can chat. :)
I've had an OpenVBX running for at least a year, but I haven't actually logged into it in months. Haven't needed to; the calls just come in. Back when I was configuring it, there were a number of things I thought could've been more intuitive. I'll have to go log in and make a list.
Would the employees only be able to call through a browser or is there something else available?