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7940 TFTP file not found only for extension mobility users

Hi, hope someone can help out.

We developed a problem with our 7940 IP Phones. We're on CUCM 6.1.2.1000-13. Recently when our users who use extension mobility log on/off the phone resets and then complains that the TFTP file cannot be found.

We have 6 servers (2 per site) in our cluster and if we change the TFTP option in DHCP to another site it seems to work. We also did a "show active version" on the CLI and found that there wasn't a .cop file for the 7940's. I added one recently and it seemed to spring back to life.

However it's happening again, and changing the DHCP option is no longer working.

Any ideas?

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Cisco Employee

Re: 7940 TFTP file not found only for extension mobility users

Though the symptoms you are describing are not matching up exactly at first sight, I would definitely move away from this release due to CSCso93220 (dbnotify client removed, unable to reset phones). Updates for going up to 6.1(5)SU3 can be found here. Note for 6.1(5)/6.1(5)SU you need to do a 2 stage upgrade with an intermediate upgrade to a release between 6.1(3) and 6.1(4a)SU2 as stated in the compatibility matrix.

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