07-18-2016 08:08 AM - edited 03-17-2019 07:34 AM
Hi Guys,
If I migrate the phones from cucm 8.6 with cluster security mode 0 to cucm 10.5 with cluster security mode 0 will it cause any issues with ip phone registration?? Like i need to delete CTL/ITL files from phones.
Regards,
Gowrishankar
07-18-2016 08:36 AM
CTI will not be a problem since both the clusters are running in non-secure mode but you will definitely need to take care of ITL. Refer below post that talks about this and the steps involved in the same:
https://supportforums.cisco.com/document/60716/migrating-ip-phones-between-clusters-cucm-8-and-itl-files
Regards
Deepak
07-18-2016 10:20 AM
Hi Deepak,
Thanks for the update and link.
Regards,
Gowrishankar
07-18-2016 08:37 AM
You don't need to worry about CTL, but you do need to worry about ITL as that's enabled by default on 8.x+
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