[Feb 13 23:33:29] NOTICE[3556]: chan_sip.c:7085 sip_reg_timeout:    -- Registration for 'scarfy@ekiga.net' timed out, trying again (Attempt #41)
REGISTER 12 headers, 0 lines
Reliably Transmitting (no NAT) to 86.64.162.35:5060:
REGISTER sip:ekiga.net SIP/2.0
Via: SIP/2.0/UDP 192.168.0.4:5060;branch=z9hG4bK48ce6223;rport
From: <sip:scarfy@ekiga.net>;tag=as003013d0
To: <sip:scarfy@ekiga.net>
Call-ID: 3332153504b09a43081083c8019c266c@127.0.0.1
CSeq: 143 REGISTER
User-Agent: Asterisk PBX
Max-Forwards: 70
Expires: 120
Contact: <sip:101@192.168.0.4>
Event: registration
Content-Length: 0


---
yorick*CLI> 
<--- SIP read from 86.64.162.35:5060 --->
SIP/2.0 406 Not Acceptable
Via: SIP/2.0/UDP 192.168.0.4:5060;branch=z9hG4bK48ce6223;rport=12504;received=84.73.85.22
From: <sip:scarfy@ekiga.net>;tag=as003013d0
To: <sip:scarfy@ekiga.net>;tag=12d18c5009a2de32fca8ae9d70ad0321.947d
Call-ID: 3332153504b09a43081083c8019c266c@127.0.0.1
CSeq: 143 REGISTER
Server: Sip EXpress router (0.9.6 (i386/linux))
Content-Length: 0
Warning: 392 86.64.162.35:5060 "Noisy feedback tells:  pid=4161 req_src_ip=84.73.85.22 req_src_port=12504 in_uri=sip:ekiga.net out_uri=sip:ekiga.net via_cnt==1"


<------------->
--- (9 headers 0 lines) ---
    -- Got SIP response 406 "Not Acceptable" back from 86.64.162.35
Really destroying SIP dialog '3332153504b09a43081083c8019c266c@127.0.0.1' Method: REGISTER