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Cisco IP phone 7970 continuously rebooting.

Kamran Mirzayev
Level 1
Level 1

‎03-28-2012 05:18 AM - edited ‎03-16-2019 10:20 AM

HI!

I have Cisco IP phone 7970 that continuously rebooting on logo screen. The next step was restore IP Phone to the factory default, but it freezes while upgrading with 0%. I've tried to run IP Phone on different CUCM (8.6.1 and 6.1.5), but result is still unchanged. Then i've tried to sniff packets that comes from IP Phone and encountered with problem that none of the switches had the MAC address in their mac-address table. Is there any method to make IP Phone work normally?  Thanks!

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paolo bevilacqua
Hall of Fame
Hall of Fame

‎03-28-2012 05:23 AM

MAc address and switch problem is unlikly.

Most likely you do not have the right firmware files on tftp server.

The question is very aften asked and you can search the forum for many, many similar threads.

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