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ASA Phone-Proxy stops working after 9.x Phone load applied

Michael Huffman
Level 1
Level 1

I'm having an issue with my Cisco 7945 (and 7975) phones that connect to our CUCM-BE through our ASA Phone-Proxy setup.

This has been working perfectly until we upgraded our CUCM-BE and the phones upgraded their phone load.
If I downgrade the phone load on the phones to the original load they start working again.

ASA is running version 8.2(5)

The working phone load is SCCP45.8-5-4S
The non-working load is SCCP45.9-2-1S

Call Manager is now running version 8.6.2.20000-2


Debug phone-proxy tftp

PP: Received ACK for Block 497 from remote phone outside:xxx.xxx.xxx.xxx/50872 to ASA at inside:xxx.xxx.xxx.xxx
PP: TFTP session complete, all data sent

The TFTP process completes


The phones hang up at registering and never complete registration to CM

4 Replies 4

Rob Huffman
Hall of Fame
Hall of Fame

Hi Michael,

Maybe a long lost relative

You may want to check the notes from Joe in this thread;

https://supportforums.cisco.com/message/3372843#3372843

Cheers!

Rob