You will first need to make sure that your CUCM is up to date and has support for the endpoints you want to add, ie, you will need at least version 9.1(2) of CUCM to support the DX80: The CUCM_FAQ might be helpful for you.
If you have further queries, they would be better placed in the Unified Communications section of the forums where the CUCM is more actively discussed than in the Cafe.
Wayne
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Wayne
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