Hi,
When registering EX60 to CUCM, it is highly recommended to use CUCM version 8.6.2 and later. However, you can still add your EX60 to CUCM 5.1 and newer (including 8.0) as a third party SIP device, but it will work with some limitations.
To learn how to add EX60 to CUCM as a SIP third party device, follow this document:
https://supportforums.cisco.com/docs/DOC-26382
To learn how to add EX60 to CUCM 8.6.2 and later (recommended), follow the documents "Administering TC Endpoints on CUCM":
http://www.cisco.com/en/US/partner/products/ps11327/prod_maintenance_guides_list.html
Regards
Paulo Souza
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Paulo Souza
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