Cisco UCM 10.x from 7.x - what's new?

We're upgrading finally from 7 to CUCM 10 as 7 is end of life. What are key new features appreciated in 10 versus 7? I heard Attendant Console is back. Anything else noteworthy? Any caveats to look out for? I know that proxy phone is no longer supported and there's a bug in the phone firmware that prevents transition to Expressway (the phones can spontaneously boot after 20 30 minutes of talking evidently). Anything else to be aware of as potential gotchas amidst the upgrade?
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amigan_99Network EngineerAsked:
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José MéndezCommented:
Attendant Console in version 10 is not back as we know it in version 7. It is not for free, nor is it bundled within the Callmanager server.

Instead of Phone Proxy Cisco added Phone VPN.

When upgrading, you need to first pass through Callmanager 9.x. To successfully install 9, you need to install this file

ciscocm.refresh_upgrade_v1.5.cop.sgn

Once you are running on 9.x, install this intermediate file:

ciscocm.version3-keys.cop.sgn

And finally go to version 10.5.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/10_0_1/delta/CUCM_BK_C206A718_00_cucm-new-and-changed-1001/CUCM_BK_C206A718_00_cucm-new-and-changed-1001_chapter_010.html

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/10_5_1/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051_chapter_01.html
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amigan_99Network EngineerAuthor Commented:
Thanks again!
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