I have 3x Cisco 8831 conference phones which have worked on our CME for around 2 years now. But last week I noticed all 3 are showing "phone not registered".
Checking debugs I see:
9078392: Feb 4 16:23:47.541: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:
REGISTER sip:10.200.13.1 SIP/2.0
Via: SIP/2.0/UDP 10.200.13.147:5060;branch=z9hG4bK3ad64bcf
From: <sip:8132@10.200.13.1>;tag=ac44f21020ac00075467629e-35707c7e
To: <sip:8132@10.200.13.1>
Call-ID: ac44f210-20ac0007-21f02de8-22d331a3@10.200.13.147
Max-Forwards: 70
Date: Sat, 01 Jan 2000 00:57:02 GMT
CSeq: 106 REGISTER
User-Agent: Cisco-CP8831G/9.3.2
Contact: <sip:A9B4-21B8@10.200.13.147:5060;transport=udp>;+sip.instance="<urn:uuid:00000000-0000-0000-0000-ac44f21020ac>";+u.sip!devicename.ccm.cisco.com="SEPAC44F21020AC";+u.sip!model.ccm.cisco.com="659"
Supported: replaces,join,sdp-anat,norefersub,extended-refer,X-cisco-callinfo,X-cisco-serviceuri,X-cisco-escapecodes,X-cisco-service-control,X-cisco-srtp-fallback,X-cisco-monrec,X-cisco-config,X-cisco-sis-5.2.0,X-cisco-xsi-8.5.1
Content-Length: 0
Reason: SIP;cause=200;text="cisco-alarm:14 Name=SEPAC44F21020AC Load=sip8831.9-3-3-5.loads Last=cm-closed-tcp"
Expires: 3600
9078393: Feb 4 16:23:47.545: //81041/029E8906AC74/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.200.13.147:5060;branch=z9hG4bK3ad64bcf
From: <sip:8132@10.200.13.1>;tag=ac44f21020ac00075467629e-35707c7e
To: <sip:8132@10.200.13.1>;tag=10CC155C-2272
Date: Mon, 04 Feb 2019 16:23:47 GMT
Call-ID: ac44f210-20ac0007-21f02de8-22d331a3@10.200.13.147
Server: Cisco-SIPGateway/IOS-15.5.3.M2
CSeq: 106 REGISTER
WWW-Authenticate: Digest realm="",nonce="C1F2EEB44E7ACEEF",algorithm=MD5,qop="auth"
Content-Length: 0
To me it looks like the SIP Contact header is what is causing the issue?
If anymore debugs/information is needed I can collect these tomorrow morning.
