Aastra 5xi BLF

Discussion in 'Windows' started by comresource, Sep 1, 2009.

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  1. comresource

    comresource Member

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    I have been having an ongoing issue with my BLF lamps on some Aastra 5xi phones where randomly the lamp was not being turned off once the monitored extension hangs up. I ran a sniffer trace and found that the SIP NOTIFY to turn off the lamp was receiving a

    "SIP STATUS : 500 CSeq Number Out of order"

    The problem is that any future other calls from the monitored extension does not send any SIP NOTIFY packets after that point. So I cant attempt to fix it by initating another call. Its like it just forgets about the BLF entirely.

    Any suggestions on this?
     
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  2. SY

    SY Well-Known Member
    3CX Support

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    What is the source which triggers the "SIP STATUS : 500 CSeq Number Out of order"? Do you have any logs from the "other side of force"?

    Thanks
     
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  3. comresource

    comresource Member

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    The source that triggers the message is the phone, it complained about the SIP NOTIFY from 3CX to turn off the BLF Lamp. I did a bit of digging and found a parameter that can be enabled in the aastra config file as follows...

    Code:
    Ignore Out of Order SIP Requests
    Parameter– sip accept out of order requests
    Configuration Files aastra.cfg, <mac>.cfg
    Description Enables a workaround for non-compliant SIP devices (for example, Asterisk) 
    which do not increment the CSeq numbers in SIP requests sent to the phone. 
    Format Boolean
    Default Value 0 (disabled)
    Range 0 (disabled)
    1 (enabled)
    Example sip accept out of order requests: 1
    I will do some testing to see if this fixes things.

    EDIT: Just realized I put this in the wrong forum. if it could be moved to General that would be appreciated.

    Thanks
     
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  4. SY

    SY Well-Known Member
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    The phone just specifies its own behavior in the log... The source of SIP NOTIFY is the PBX. PBX should provide log of activity at the same time.
    I think it is very useful set of information to start investigation.

    Thanks
    P.S. I'm not a moderator of this forum, sorry.
     
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  5. comresource

    comresource Member

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    After making the change I have been unable to recreate the problem.

    If you still want the wireshark dump of the instance where I received the error let me know.
     
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  6. SY

    SY Well-Known Member
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    I've requested it in my previous posts :)

    I'm glad to know that you resolve the problem

    Thanks
     
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  7. comresource

    comresource Member

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    Packets of interest are

    19: First Notify to turn on lamp
    21: OK from phone

    61: Second Notify to turn off lamp
    65: CSeq number out of order.
     

    Attached Files:

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  8. SY

    SY Well-Known Member
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    Hi Danny,

    Thanks a lot for the information. We will investigate it. Do you have 3CXPhoneSystem.trace.log? It just to have some additional information from PBX side.

    Thanks
     
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  9. comresource

    comresource Member

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    Here it is.

    Oops. FIle to big to attach. Have an email address?

    Actually looking it over it looks like the infor from yesterday is no longer in the log.
     
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  10. SY

    SY Well-Known Member
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    Ok. forget about this file.
    If you have any hints how to setup environment to replicate this problem then please provide it.

    Thanks
     
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  11. comresource

    comresource Member

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    Using 2 Aastra 5xi phones with BLF on one to monitor the other.

    It would happen most often if I would dial something from the monitored phone but hang up when I would hear the first ring. The BLF lamp on the other phone would light...but not go out when I hung up.
     
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