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Replacing ASA 5510 with 5520 for our phone-proxy

I have a question about our ASA though if anyone can answer it. We have  to move from an ASA 5510 to a 5520 due to the 100 UC proxy-phone license  limitation on the 5510 (even though we have only 70 proxy phones deployed it appears that a UC license  is taken up for each TFTP server configured on the phone - primary and  secondary). When I configured the 5520 I can register new phones no  problem. None of the existing phones will register until the CTL file is  manually deleted on each phone. Is there a way to seamlessly migrate to  the 5520? Such as using the same certs, CTL file etc.. on the 5520?  When I configured it it generated it's own self-signed key and CTL file.  I did import the certificates from CUCM...

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Replacing ASA 5510 with 5520 for our phone-proxy

Wrong forum, post in "Security - firewalling. You can move your posting with the Actions panel on the right.

New Member

Replacing ASA 5510 with 5520 for our phone-proxy

Got my answer from Cisco TAC - CUCM group - the CTL files have to be manually deleted from the phones

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