Have you considered 2talk hosted pbx instead?
jlg84: I didn't know that 2Talk offer such a service.
speed: I maintain a collection of Asterisk PBXs (serving approx 500 phones) from various Ubuntu Servers inside Virtual Machines on Apple hardware, and I have had a really good experience with the setup.
Peppery: What hypervisor are you using? We're running Asterisk on Ubuntu Server inside VMWare Fusion on a pair of Mac Minis and it works well, except for when the less technically inclined hit the big pause button.
rosco62: You get what you pay for with freeware and bottom of the tree ip phones. I have yet to see any asterisx system that in the long term is trouble free. They are an IT dream in terms of making clients dependent on their IT provider and providing a nice income stream for them..
If you really want reliable get yourself something like an Avaya IP office with Avaya IP phones. Middle of the road in terms of pricing but up there with reliability and sip interoperability. I see lots of them tucked away for years, running reliably with no trouble. Lots of them for sale on trade me.
Nortel BCM used to be a good bet but has been end of life for several years now with no support. There are various other brands on the market but they come and go leaving clients hi and dry
No I am not a reseller of anything but an experienced trouble shooter