We've used many handsets with Asterisk and prefer Cisco. We tried both Cisco SPA504G and Cisco SPA525G. We have 1 client running approx 50 Cisco SPA504G.

Digium phones are also pretty cool though if you're using a distro (such as FreeBSD) which doesn't support the digium phone module then you will have problems with missed call alerts showing when calls are answered at other stations. I have been in touch with Digium who have advised there is no fix for this at the moment as it doesn't support the CALL_ANSWERED_ELSEWHERE sip headers and they may be looking at including this in to a Firmware update - but as yet it's tough :P

So Digium if distro supports the module or Cisco if not. Cisco and Digium are pretty easy to auto-provision which is what you want for a large environment, Cisco provisioning via TFTP server and Digium via HTTP.

With regards to message waiting indicators and BLF we succesfully had them working on both handsets with server based addressbooks.

We have also tried SNOM and some others, personal preference just didn't like the look and feel of those handsets.

Last edited by lostpacket; 12/10/13 06:40 PM.
Network Support Engineer
Sheridan Computers
http://www.sheridancomputers.co.uk/