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New Member

Cisco IP Phone 7911 with no firmware

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

Oscar

7 REPLIES
Hall of Fame Super Gold

Re: Cisco IP Phone 7911 with no firmware

First of all you need the firmaware files, normally by paid cisco support contract.

New Member

Re: Cisco IP Phone 7911 with no firmware

Hi, I already have the files loaded on my router. the version of CME is 7.1

Hall of Fame Super Gold

Re: Cisco IP Phone 7911 with no firmware

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".

New Member

Re: Cisco IP Phone 7911 with no firmware

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

Hall of Fame Super Gold

Re: Cisco IP Phone 7911 with no firmware

It is, but you don't see it.

Enable debug tftp events and check again.

New Member

Re: Cisco IP Phone 7911 with no firmware

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

Hall of Fame Super Gold

Re: Cisco IP Phone 7911 with no firmware

Next would be reset sequence:

http://www.cisco.com/en/US/products/hw/phones/ps379/products_tech_note09186a00800941bb.shtml

If that doesn't work, then there is another one to try.

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