[cisco-voip] Help - 7970 Not registering

[Wes Sisk]

Make sure the phone can reach it's TFTP server and make sure no firewall 
or access list is blocking the 'file not found' response to the phone's 
TFTP GET request for CTLSEP<mac> file.  After that, reset the phone to 
factory defaults to clear any certificates that may have been installed 
before you received the phone.

/Wes

dwolgas1 at rochester.rr.com wrote:

>Had configured a 7970G last week at my desk with 6.0(3)sr1 load, CCM 3.3
>(3)sr4a, working fine.  I moved it to another room this morning (Same 
>subnet/VLAN) and it now gets a "CTL Update Failed" message and cycles 
>continuously.  The Security Config screen shows no CTL file installed 
>on the phone.
>
>Why did this happen, and how can I fix it?
>
>Dave Wolgast
>HealthNow New York, Inc.
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