well, you should probably ask your local Cisco contact.
There's a compatibilty matrix here:
but it's quite old and has no information on the 78XX series.
Thanks for confirming that Philippe, It was a question on my mind when considering these for customers who will also require Jabber Deskphone Control.
We got access to a 7821 phone last week and tested out our JTAPI based application(application is used to monitor/whisper agents without using UCCE/X) and it worked successfully.
I'm experiencing some problems to run Cisco Jabber with CP-7821. How do to do it to work fine?
I have problems with login IPCC and CP7821 too.
Any help or idea?