Outgoing calls to this specific number don't go through with the response "606 Not Acceptable". See below..
SIPTransaction=> SIPTransaction=>Request received udp:xxxxxxxxxxx:5070<-udp:xxxxxxxxxxx:5060
INVITE sip:xxxxxxxxxxx@sipsorcery.com SIP/2.0
Via: SIP/2.0/UDP xxxxxxxxxxx:5060;branch=z9hG4bK0e848913ea3f1b971dd6f6ed974772767f65484d;rport=5060;received=xxxxxxxxxxx
Via: SIP/2.0/UDP xxxxxxxxxxx:5060;rport=5060;branch=z9hG4bK1FA5990B19FDF6BB;received=xxxxxxxxxxx
To: <sip:xxxxxxxxxxx@sipsorcery.com>
From: <sip:xxxxxxxxxxx@sipsorcery.com>;tag=A73188A8DBCD1492
Call-ID: 11439B09032FB944@xxxxxxxxxxx
CSeq: 3951 INVITE
Contact: <sip:xxxxxxxxxxx@xxxxxxxxxxx;uniq=16388190177CDB43969959E5F8AC6>
Max-Forwards: 69
Route: <sip:sipsorcery.com;lr>
User-Agent: AVM FRITZ!Box Fon WLAN xxxxxxxxxxx
Expires: 120
Accept: application/sdp, multipart/mixed
Accept-Encoding: identity
Allow: INVITE,ACK,OPTIONS,CANCEL,BYE,UPDATE,PRACK,INFO,SUBSCRIBE,NOTIFY,REFER,MESSAGE,PUBLISH
Authorization: Digest username="xxxxxxxxxxx",realm="sipsorcery.com",nonce="19338611551261160913",uri="sip:v@sipsorcery.com",response="a811b8e06beda3573ee111953765bfa8",algorithm=MD5
Supported: 100rel,replaces
Content-Length: 315
Content-Type: application/sdp
Proxy-ReceivedFrom: udp:xxxxxxxxxxx:5060
Proxy-ReceivedOn: udp:xxxxxxxxxxx:5060
Allow-Events: telephone-event,refer
v=0
o=user 4755560 4755560 IN IP4 xxxxxxxxxxx
s=call
c=IN IP4 xxxxxxxxxxx
t=0 0
m=audio 7078 RTP/AVP 8 0 2 102 100 99 97
a=sendrecv
a=rtpmap:2 G726-32/8000
a=rtpmap:102 G726-32/8000
a=rtpmap:100 G726-40/8000
a=rtpmap:99 G726-24/8000
a=rtpmap:97 iLBC/8000
a=fmtp:97 mode=30
a=rtcp:7079
a=ptime:30
>>>>>>>>> [snip] <<<<<<<<<<<<<<
DialPlan=> Information response 100 Trying for sip:xxxxxxxx@sip.xs4all.nl.
SIPTransaction=> Received Response udp:xxxxxxxxxxx:5070<-udp:xxxxxxxxxxxxx:5060
SIP/2.0 606 Not Acceptable
Via: SIP/2.0/UDP xxxxxxxxxxx:5070;branch=z9hG4bKaf47b847a9814f81afe347bc2f520112;rport
To: <sip:xxxxxxxxxxx@sip.xs4all.nl>;tag=SDu4a1099-127.0.0.1alUtKGp-09542+1+fb8603f1+7212f33
From: <sip:xxxxxxxxxxx@sip.xs4all.nl>;tag=NUNUFTLXSI
Call-ID: 334ead75539947d3a1f9bb89966d0024
CSeq: 2 INVITE
Contact: <sip:+xxxxxxxxxxxx@xxxxxxxxxxxx:51000>
Allow: INVITE, BYE, ACK, OPTIONS, CANCEL, PRACK, UPDATE
Supported: replaces, path, 100rel, timer
Content-Length: 0
Proxy-ReceivedFrom: udp:yyyyyyyyyyy:5060
Proxy-ReceivedOn: udp:xxxxxxxxxxx:5060
Server: Alcatel-Lucent 5060 MGC-8 9.2.0.7.0.5
This is relatively recent, I've had calls to this number previously. Any suggestions for debugging/troubleshooting?
Best regards!
H