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  1. #1
    Registered User
    Join Date
    May 2008
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    7

    CRLF Refresh for Nokia SIP client

    Hello,

    I would like to know if any one has used the "CRLF Refresh" option for the NAT FW settings for the SIP client.

    I would like to know if this works for UDP or only for TCP/TLS?

    Also, I think that the "CRLF" refresh message will be sent to SIP signalling port rather than the Stun port?


    Thanks,

    Steve

  2. #2
    Regular Contributor
    Join Date
    Aug 2007
    Posts
    74

    Re: CRLF Refresh for Nokia SIP client

    Hi,

    The CRLF refreshing is done for both UDP and TCP/TLS.

    -jp40

  3. #3
    Registered User
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    Sep 2009
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    7

    Re: CRLF Refresh for Nokia SIP client

    does anyone know what the CRLF interval (frequency) is?

  4. #4
    Nokia Developer Champion
    Join Date
    Mar 2003
    Posts
    4,104
    I do not understand your question. The value depends on your configuration of the Nokia. Nokia’s defaults are well documented. The actual value has an extreme jitter. If you are in control of the registrar, make sure to avoid CR/LF, because requires power unnecessarily and contains a big bug in all Nokia mobile phones, I own.

  5. #5
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    Jun 2008
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    44

    Re: CRLF Refresh for Nokia SIP client

    @traud: coudl you share what the big bug is ?

  6. #6
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    Join Date
    Mar 2010
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    12

    Question Re: CRLF Refresh for Nokia SIP client

    Quote Originally Posted by traud View Post
    The actual value has an extreme jitter. If you are in control of the registrar, make sure to avoid CR/LF, because requires power unnecessarily and contains a big bug in all Nokia mobile phones, I own.
    What do you mean, "the actual value has an extreme jitter"?
    Also, do you have any sources that support your claim that there is a "big bug"?

  7. #7
    Nokia Developer Champion
    Join Date
    Mar 2003
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    4,104
    Yes, my Wireshark logs. Avoid refreshes from your Nokia. Send keepalives from your registrar instead, use TCP instead of UDP, … find your strategy.

  8. #8
    Registered User
    Join Date
    Dec 2010
    Posts
    1

    Re: CRLF Refresh for Nokia SIP client

    Quote Originally Posted by traud View Post
    Yes, my Wireshark logs. Avoid refreshes from your Nokia. Send keepalives from your registrar instead, use TCP instead of UDP, … find your strategy.
    hey traud,
    i hate to wake this thread from the death. however, if you could please elaborate "your strategy" i would be very greateful.
    i am using e71 wich is succesfully connected with my trixbox over 3g however the battery lasts only 5 hours with UDP settings...
    i have tried everything except that TCP signalling was unsuccesfful so far. My trixbox (latest version 2.8.0.3) can handle TCP and i have enabled it in sip_general_custom.conf
    The extension registers succesfuly, however calling is a problem as i cannot make a call either way. please kindly let me know.
    thanks in advance.
    adrian

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