Unified Communications

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  • 1.  IP Phone Discover Mode

    Posted 05-24-2019 07:39 AM
    Aura CM 7.1.1

    I have two sites - primary and ESS. 

    A user (with a 9608 IP phone) who normally works at the primary site went to the secondary (ESS) site to work for a week or so. (She did not take her phone with her.) She was able to log into another phone with her extension at the secondary site. However, when she went back to the primary site, her normal phone was in Discover mode. Trace showed it was getting an IP address, but would not communicate/connect with the PBX.

    A reboot did not work. After reboot, it briefly displayed the login screen, but immediately went back to Discover mode. We tried a new phone at the same jack and it came right up.

    Any idea what causes this? The phone was working before she left, now it doesn't. Why?

    Thanks

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    Ted Hargiss
    Manager
    Landstar
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  • 2.  RE: IP Phone Discover Mode

    Posted 05-24-2019 01:20 PM
    Have you established whether or not she logged out of her phone at the other site?  

    I would really expect the original phone to show a message saying the extension is in use elsewhere and not discovering.  Assuming h.323 in this case.

    Have you cleared settings and tried logging it in?



    Original Message


  • 3.  RE: IP Phone Discover Mode

    Posted 05-31-2019 08:22 AM
    Ted,

    A phone shouldn't go to "discovering" if it was logged out somewhere else.  H.323 phones should show a message saying that the phone was logged in elsewhere and that the user can either Login or Continue (continue will log the remote user out).  

    Discovering means that the phone is unable to establish a TCP connection to either your CLANs or CM server, and that matches what you see from your traces.  

    This is most likely a coincidence that this happened at the same time.  Check your VLAN, IP address and server settings to make sure they didn't get touched or mangled.  If this would have been at my office, the most likely thing was that the phone started beeping when it got logged out and somebody started smashing buttons until it stopped -- causing a setting to get mis-set.

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    Nick Kwiatkowski
    Director of Design and Engineering
    Michigan State University
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    Original Message


  • 4.  RE: IP Phone Discover Mode

    Posted 05-31-2019 09:35 AM
    The user was definitely logged out.
    I had my network guys run a trace on it while booting. They showed that the phone was getting to the right VLAN and pulling a good IP address. 
    The phone was factory reset, but still went into Discovery.

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    Ted Hargiss
    Manager
    Landstar
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    Original Message