Hi Joseph,
CDP is the protocol that is used across all Cisco Products... That's not to say it won't change in the future.
In your situation you will need to hard code the Voice Vlan into the phone, Although this may not be required If the HP switches are connected to the trunk port on the UC and you manually program the Vlans Into the switches.
This may or may not allow CCA to see the phones but it is the only way I can think of it working for You.
Cheers,
David.
Cheers,
David Trad.
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