Cisco IP Phone 7911 with no firmware

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Mar 10th, 2010
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Hi Guys, is it possible to recover a cisco ip phone 7911 from a missing firmware? if so how can i do it?

Please help me

Thanks in advance

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Paolo Bevilacqua Wed, 03/10/2010 - 08:27
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First of all you need the firmaware files, normally by paid cisco support contract.

ochalmers Wed, 03/10/2010 - 09:39
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Hi, I already have the files loaded on my router. the version of CME is 7.1

Paolo Bevilacqua Wed, 03/10/2010 - 09:43
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configure tftp-server term11.default.loads

Sometime the 7911s think they are 7906s, so configure that also.


that should be sufficient, observe boot process with "debug tftp events" and "term mon".

ochalmers Wed, 03/10/2010 - 11:45
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It's kind of weird because the ip phone 7911 does not even get an ip address and the screen is blank, any clues?

Thanks

Paolo Bevilacqua Wed, 03/10/2010 - 11:49
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It is, but you don't see it.

Enable debug tftp events and check again.

ochalmers Thu, 03/11/2010 - 06:40
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Hi bevilacqua,


     The IP phone hasn't yet taken an ip address, i follow your recommendation and use the debug tftp-server and ter mon commands but i do not see any attempt to register the ip phone, so i configure a dhcp pool on the router but it seems not to work, i plug another cisco ip phone 7911 just to discard any error on my configuration but it works fine.


     I configure a span session to see in detail what the ip phone is doing and all traffic that i see is cdp nothing else, it seems that the ip phone never try to get an ip address.


Please Let me know any other idea.


Thanks in advance

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