Wifi phones lose registration

[salert]

Hi, I'm having an issue with spectralink wireless phones losing their registration on an IP Office 500V2 11.1.3, it works fine for a day/week or even a month then I get reported issues. The system status shows it's registered to the proper IP address. Rebooting the phone fixes the issue. I'm a little stumped as to why it is doing this and it happens to multiple phones. Has anyone had a similar issue?

 

[salert]

Here is a failed registration:
76735483mS SIP Reg/Opt Rx: phone
REGISTER sip:10.25.3.60 SIP/2.0
Via: SIP/2.0/UDP 10.25.3.166:5070;rport;branch=z9hG4bKPj60cf955a-0698-4908-84c2-c1a2437fac60
Max-Forwards: 70
From: <sip:260@10.25.3.60>;tag=c15e0b57-eabf-47d0-ada1-8a1fc0d21d72
To: <sip:260@10.25.3.60>
Call-ID: 920a7162-7720-48c1-8b71-832fe1de14cf
CSeq: 41309 REGISTER
User-Agent: SpectralinkVersity 9540 apollo OPM1.171019.026 1.7.0.1232 9.1.18064 2020.01.10 16.38 GMT
Contact: <sip:260@10.25.3.166:5070;ob>
Expires: 300
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Content-Length: 0

76735487mS SIP Reg/Opt Tx: phone
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.25.3.166:5070;rport;branch=z9hG4bKPj60cf955a-0698-4908-84c2-c1a2437fac60
From: <sip:260@10.25.3.60>;tag=c15e0b57-eabf-47d0-ada1-8a1fc0d21d72
Call-ID: 920a7162-7720-48c1-8b71-832fe1de14cf
CSeq: 41309 REGISTER
User-Agent: IP Office 11.1.3.0.0 build 23
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,INFO,SUBSCRIBE,REGISTER,PUBLISH

http://WWW-Authenticate:

Digest nonce="d627cd51d1e8ea111418",realm="ipoffice",algorithm=MD5
Server: IP Office 11.1.3.0.0 build 23
To: <sip:260@10.25.3.60>;tag=3fcdce5726e5294e
Content-Length: 0

76736096mS SIP Reg/Opt Tx: phone
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.25.3.166:5070;rport;branch=z9hG4bKPj60cf955a-0698-4908-84c2-c1a2437fac60
From: <sip:260@10.25.3.60>;tag=c15e0b57-eabf-47d0-ada1-8a1fc0d21d72
Call-ID: 920a7162-7720-48c1-8b71-832fe1de14cf
CSeq: 41309 REGISTER
User-Agent: IP Office 11.1.3.0.0 build 23
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,INFO,SUBSCRIBE,REGISTER,PUBLISH

http://WWW-Authenticate:

Digest nonce="d627cd51d1e8ea111418",realm="ipoffice",algorithm=MD5
Server: IP Office 11.1.3.0.0 build 23
To: <sip:260@10.25.3.60>;tag=3fcdce5726e5294e
Content-Length: 0

76737007mS SIP Reg/Opt Tx: phone
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.25.3.166:5070;rport;branch=z9hG4bKPj60cf955a-0698-4908-84c2-c1a2437fac60
From: <sip:260@10.25.3.60>;tag=c15e0b57-eabf-47d0-ada1-8a1fc0d21d72
Call-ID: 920a7162-7720-48c1-8b71-832fe1de14cf
CSeq: 41309 REGISTER
User-Agent: IP Office 11.1.3.0.0 build 23
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,INFO,SUBSCRIBE,REGISTER,PUBLISH

http://WWW-Authenticate:

Digest nonce="d627cd51d1e8ea111418",realm="ipoffice",algorithm=MD5
Server: IP Office 11.1.3.0.0 build 23
To: <sip:260@10.25.3.60>;tag=3fcdce5726e5294e
Content-Length: 0

76739017mS SIP Reg/Opt Tx: phone
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.25.3.166:5070;rport;branch=z9hG4bKPj60cf955a-0698-4908-84c2-c1a2437fac60
From: <sip:260@10.25.3.60>;tag=c15e0b57-eabf-47d0-ada1-8a1fc0d21d72
Call-ID: 920a7162-7720-48c1-8b71-832fe1de14cf
CSeq: 41309 REGISTER
User-Agent: IP Office 11.1.3.0.0 build 23
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,INFO,SUBSCRIBE,REGISTER,PUBLISH

http://WWW-Authenticate:

Digest nonce="d627cd51d1e8ea111418",realm="ipoffice",algorithm=MD5
Server: IP Office 11.1.3.0.0 build 23
To: <sip:260@10.25.3.60>;tag=3fcdce5726e5294e
Content-Length: 0

76743010mS SIP Reg/Opt Rx: phone
REGISTER sip:10.25.3.60 SIP/2.0
Via: SIP/2.0/UDP 10.25.3.166:5070;rport;branch=z9hG4bKPj60cf955a-0698-4908-84c2-c1a2437fac60
Max-Forwards: 70
From: <sip:260@10.25.3.60>;tag=c15e0b57-eabf-47d0-ada1-8a1fc0d21d72
To: <sip:260@10.25.3.60>
Call-ID: 920a7162-7720-48c1-8b71-832fe1de14cf
CSeq: 41309 REGISTER
User-Agent: SpectralinkVersity 9540 apollo OPM1.171019.026 1.7.0.1232 9.1.18064 2020.01.10 16.38 GMT
Contact: <sip:260@10.25.3.166:5070;ob>
Expires: 300
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Content-Length: 0

76743014mS SIP Reg/Opt Tx: phone
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.25.3.166:5070;rport;branch=z9hG4bKPj60cf955a-0698-4908-84c2-c1a2437fac60
From: <sip:260@10.25.3.60>;tag=c15e0b57-eabf-47d0-ada1-8a1fc0d21d72
Call-ID: 920a7162-7720-48c1-8b71-832fe1de14cf
CSeq: 41309 REGISTER
User-Agent: IP Office 11.1.3.0.0 build 23
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,INFO,SUBSCRIBE,REGISTER,PUBLISH

http://WWW-Authenticate:

Digest nonce="448f6a34173dd8e20dac",realm="ipoffice",algorithm=MD5
Server: IP Office 11.1.3.0.0 build 23
To: <sip:260@10.25.3.60>;tag=0e6cb8620f2327f2
Content-Length: 0

 

[sizbut]

401 Unauthorized" is slightly misleading in name. Its used as a standard SIP server response to a phone asking to register, basically its the server saying it needs to receive some authorization details to allow the registration to proceed any further, and including a nonce to be used by your phone to encrypt and send those details.

So the trace shows the IP Office responding immediately to the phone wanting to register, and then repeated the request 5 times at roughly 1 second intervals. Its waiting for something from the phone. The other possibility is that the IP Office responses are not getting back to the phones. In the latter case that means looking at all the routing devices between the phones and the IP Office, something not seeing enough regular options keepalives to keep a connection open.

Stuck in a never ending cycle of file copying.