I have a Polycom IP 335 and a Linksys SPA921 here at my office (on the same desk, connected to the same hosted PBX; don't ask). The Linksys is not having issues registering. The Polycom, however, gets a 401 Unauthorized every time it tries to register. Both phones are behind the same NAT, both are registering to the same PBX, and they are registering to the same extension. SIP messages here: http://pastebin.freeswitch.org/19765 <http://pastebin.freeswitch.org/19765>Internal Sofia Profile here: http://pastebin.freeswitch.org/19766 Any hints? I've reset both phones, updated to latest in v1.2.stable, etc. Still no joy. -- Brian D. Foster Endigo Computer LLC Email: bdfoster@endigotech.com Phone: 317-800-7876 Indianapolis, Indiana, USA This message contains confidential information and is intended for those listed in the "To:", "CC:", and/or "BCC:" fields of the message header. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. If verification is required please request a hard-copy version.