I tested the IP200 by Innovaphone connected to my Asterisk VM at home and it worked 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 IP
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