I have 2 asterisk boxes connected via SIP box 1 sip peer connected to box 2 (ip addresses intentionally removed) [ast20] type=friend host=x.x.x.20 insecure=very context=subscriber dtmfmode=inband qualify=no canreinvite=no disallow=all allow=ulaw box 2 sip peer connected to box 1 [sbb19] type=friend host=64.1.8.19 insecure=very context=inbound dtmfmode=inband qualify=yes canreinvite=no disallow=all allow=ulaw I then have 2 UAs registed on box 1, both have identical configs with the exception of username, but one is a Polycom IP501 and the other is a Linksys PAP2 The IP 501 can call to box 2 with no issues, also calls originated on a PRI connected to box 1 connect to box 2 with no issues. The Linksys UA can not call box 2, here is the error (numbers intentionally removed); -- Executing dial("SIP/######0850-b6669f58", "SIP/######7581@ast20") -- Called ######7581@ast20 Nov 7 07:20:45 NOTICE[21059]: chan_sip.c:9709 handle_response_invite: Failed to authenticate on INVITE to '"name removed" <sip:######0850@64.1.8.19>;tag=as38826922' -- SIP/ast20-09c8b110 is circuit-busy == Everyone is busy/congested at this time (1:0/1/0) I have looked at sip debugs from both scenarios, and the invites from box 1 to box 2 look nearly identical, box 2 never shows the call when it fails. I am assuming that there is something that needs to be changed on the ATA or peer config to get it to be able to call via box1 to box2 without requiring authentication, but can not figure out what. Any ideas? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20061107/8db71737/attachment.htm