Hi
I believe that handset has a built in SIP client, so yes, you can... it uses DLUs, as any other phone. Third-party SIP phones use either 3 or 6 DLUs, depending whether you add them as basic or advanced SIP clients.
See this good doc regarding what you need to do:
https://supportforums.cisco.com/docs/DOC-8816
Regards
Aaron
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Aaron
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