Greger V. Teigre writes:
That's strange. We are using some Polycom 300 and they work ok. No STUN support and sometimes a very erratic registration pattern, but except from that, they seem to perform ok. They interoperate with sipuras, grandstreams, sjphone, cisco gw, xlite, etc.
polycom phones were sent to us for testing by polycom dealer in finland. perhaps their software version was not current, but when we complained, no newer version was supplied. does yours support digest authentication of register and other requests and place callee's hostname (not ip address) in request uri?
-- juha