Hello mowgli73,
welcome to the Polycom Community.
The SoundPoint IP 301 has been discontinued and is no longer available for purchase. Support for the product was available until 03/31/2013
The community's VoIP FAQ contains this post here:
Oct 7, 2011 Question: Can I register or is my Polycom Phone compatible with a “XYZ” SIP Server?
Resolution: Please check => here<=
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
