Innovaphone IP200
I recently tested the IP200 from Innovaphone connected to my Asterisk VM at home and it works quite well. It's not restricted to Innovaphone PBXs, even though some special features are only available to IP200s connected to a PBX from the same manufacturer.
Just reset your device, use the admin:ip200 login to the web interface and connect it to your Asterisk. In my FreePBX installation the related extension 42 uses the following SIP parameters (password XXX and LAN's IP range x.x.x.0/24):
deny=0.0.0.0/0.0.0.0
secret=XXX
dtmfmode=rfc2833
canreinvite=no
context=from-internal
host=dynamic
type=friend
nat=yes
port=5060
qualify=yes
callgroup=
pickupgroup=
dial=SIP/42
mailbox=42@default
permit=x.x.x.0/24
callerid=device <42>
callcounter=yes
faxdetect=no
I have now 3 IP200 devices, but I think, I will just keep one. Anyone interested in IP200 phones for a reasonable price? Pictures, details, manuals and other stuff is available at Innovaphone's homepage.