[Asterisk-Users] Notice message meaning for C7960?

[Rich Adamson]

Asterisk cvs-head compiled 2005-10-07 11:

Oct 12 18:35:12 NOTICE[21740]: chan_sip.c:10685 handle_request_register: Registr
ation from 'sip:301495906 at 204.212.194.101' failed for '208.5.218.28' - Not a lo
cal SIP domain

The sip phone is a Cisco 7960 with one line defined, and registration
with * is occuring just fine. Calls to/from the phone are fine. The
phone is on a distant registered IP address. Two years of running *, but not 
seen this one before. Several other C7960's don't generate this warning 
message. Obviously, I've screwed something up. 

What did I do or miss? Cluebat?

Rich