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  1. Member
    Join Date
    Apr 2012
    Posts
    48
    #1

    Question 7940 ip phone setting button does not work!!! :-|

    Hi guys,

    I bought ipphone 7940 from ebay but it is not obtainng IP from DHCP and it does not let me go into network settings manually

    from the phone? What do I do? (i configured dhcp on sw3550,is it right?!)

    Why setting button on 7940 is not functioning?!

    I also have a 7960 IPphone,setting button is functioning and i set an ip address manually and also can ping it from cucm

    this is my topology:

    topology.jpg

    Thanks in advance
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    Last edited by sattar; 03-15-2013 at 12:21 AM.
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  2. Network Engineer Hondabuff's Avatar
    Join Date
    Aug 2012
    Location
    USA
    Posts
    637

    Certifications
    CCNA:S, CCNA, CCENT, CCNP:R&S,MECP, A+, Network+, Security+, Network Security Diploma
    #2
    On the dhcp pool are you doing option 150 and the ip address of your CUCM?
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