Repeated Registration of Extensions

Discussion in '3CX Phone System - General' started by Vali_3CX, Jan 23, 2009.

Thread Status:
Not open for further replies.
  1. Vali_3CX

    Vali_3CX Well-Known Member
    Staff Member 3CX Support

    Joined:
    Dec 12, 2008
    Messages:
    1,516
    Likes Received:
    71
    Hi, Simple

    It's a normal procedure, SIP devices has a timed REGISTERed life - when registering, they requires desired "lifetime", therefore, this registration process will be repeated everytime this timeout is almost expiring.

    According to the log, all phones has a 3-min lifetime, and the fax - 5 min:

    FAX:
    18:53:24
    18:48:24
    18:43:24
    18:38:24...

    201:
    18:55:31
    18:52:36
    18:49:42
    18:46:48...

    ... and so on.

    vali
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  2. SY

    SY Well-Known Member
    3CX Support

    Joined:
    Jan 26, 2007
    Messages:
    1,825
    Likes Received:
    2
    Simple,

    Could you please provide complete log instead of selection?
    We can solve such kind of puzzle, but it is slightly annoying ;)

    Thanks
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. SY

    SY Well-Known Member
    3CX Support

    Joined:
    Jan 26, 2007
    Messages:
    1,825
    Likes Received:
    2
    I was wrong (regarding "selection of log"), sorry

    Thanks
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  4. worksighted

    worksighted New Member

    Joined:
    Aug 19, 2008
    Messages:
    204
    Likes Received:
    0
    Check your SIP registration timer in your phones. Re-registration is an automated process this will happen no matter what. its not a network instabability issue. My first guess is that the phones are set to re-register this often.

    Best,

    Mike
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  5. worksighted

    worksighted New Member

    Joined:
    Aug 19, 2008
    Messages:
    204
    Likes Received:
    0
    3600 secs (1 hour) is standard for a stable setup. Although if for any reason the server 3cx is on gets restarted often, I would go with a lower value like 10 minutes to make sure phones reregister quickly after a restart.

    You do not need to worry about missing calls.

    Best,

    Mike
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  6. Cjay

    Cjay New Member

    Joined:
    Feb 24, 2007
    Messages:
    196
    Likes Received:
    2
    I too have been puzzled as to why I am seeing much more frequent registration entries in the system log than I would expect. I am seeing all my phones re-registering every 30 minutes (1800 seconds) whereas the phones themselves are all set to register every 60 minutes (3600 seconds).

    Doing a Wireshark capture on the server shows all the phone registration requests coming in with the correct 3600 second re-registration interval request ('expires=3600') but the 3cx server response comes back with 'expires=1800' which I presume takes precedence over the requested re-registration interval as configured in the phone? Text of the registration request/response is below where an SPA-941 phone 192.168.1.151 is registering with 3cx 192.168.1.150

    I believe this behaviour only started with v7 (currently I'm on 7.0.4744), certainly my v6 logs weren't full of phone re-registration records. Looks like 3cx has some default re-registration parameter of 1800 seconds?

    Any SIP experts care to comment on whether I am interpreting the Wireshark 'expires = ' data correctly?

    Thanks,
    Chris


    REGISTER sip:192.168.1.150 SIP/2.0
    Via: SIP/2.0/UDP 192.168.1.151:5060;branch=z9hG4bK-bd81fce4
    From: "Extn 100" <sip:100@192.168.1.150>;tag=1fe2939ff4df1d10o0
    To: "Extn 100" <sip:100@192.168.1.150>
    Call-ID: 51cb0750-4afd55b3@192.168.1.151
    CSeq: 26049 REGISTER
    Max-Forwards: 70
    Proxy-Authorization: Digest username="100",realm="3CXPhoneSystem",nonce="12877205776:9bb4489862c859493b394a260808616c",uri="sip:192.168.1.150",algorithm=MD5,response="1bfe712c37b20eafb4953e5d968646ec"
    Contact: "Extn 100" <sip:100@192.168.1.151:5060>;expires=3600
    User-Agent: Linksys/SPA941-5.1.8
    Content-Length: 0
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
    Supported: replaces

    SIP/2.0 200 OK
    Via: SIP/2.0/UDP 192.168.1.151:5060;branch=z9hG4bK-bd81fce4
    Contact: <sip:100@192.168.1.151:5060>;expires=1800
    To: "Extn 100"<sip:100@192.168.1.150>;tag=2b111472
    From: "Extn 100"<sip:100@192.168.1.150>;tag=1fe2939ff4df1d10o0
    Call-ID: 51cb0750-4afd55b3@192.168.1.151
    CSeq: 26049 REGISTER
    User-Agent: 3CXPhoneSystem 7.0.4708.0
    Content-Length: 0
     
Thread Status:
Not open for further replies.