I never worked on CCM 5 to 7. I just want to know whether we need to by license and activate in the CCM to register the Cisco IP Phone ? Or the Cisco IP Phone license is just a paper license that cisco bundle with phones.
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Licenses Not Requiring a PAK
If you do not have a Product Authorization Key (PAK), please click here for available licenses. (use the please click here link)
Available licenses include Evaluation/Demo Licenses, Cisco ASA 3DES/AES, PIX Firewall 3DES/AES and DES Encryption, Cisco Services for IPS, and Cisco Unified Communications Manager Version Upgrade licenses.
Cisco Unified Communications Manager Device Upgrade License
Here is an overview of the previous info;
Watch out for the note detailed in Step #2 below;
Step 1 After you complete the Cisco Unified Communications Manager upgrade process, navigate to Cisco Unified CallManager Administration and choose System > Licensing > License File Upload.
The License File Upload window displays.
Step 2 Choose the license XML file from the Existing Files drop-down list, and click View File. The window refreshes and displays the information for the selected license. Copy all of the information in this file except the HTML tags. To copy the contents on this window, choose the appropriate text and choose Ctrl-C (Copy).
Step 3 Navigate to the License Registration web tool at https://tools.cisco.com/SWIFT/Licensing/PrivateRegistrationServlet
Step 4 Enter the MAC address of the Ethernet 0 NIC of the first node of the Cisco Unified Communications Manager cluster.
Step 5 In the text box that is provided, paste the license file contents that you copied in Step 2 by using the appropriate keyboard shortcuts, such as Ctrl-V.
Step 6 Enter a valid e-mail address and click Continue. A license file generates.
The system sends the license file to you via e-mail using the e-mail address that you provided.
Step 7 You must upload the license file to the server with the matching MAC address that you provided in Step 4. See the "Uploading a License File" section.
Step 8 You can obtain licenses for new devices that you are adding to the upgraded system, if your system requires additional device license units.
Have a look at this great tip from Jason;
"when you capture the xml file for the DLUS etc after the upgrade so that you can post it on Cisco's web site, it might be wrapped in HTML. ie the first line and the last line are html, and the license utility will reject it. Remove the first and last line to resolve this."
Here are some other good docs;
Upgrading to Cisco Unified Communications Manager Release 7.0(1) from Cisco Unified Communications Manager 4.x Releases
Data Migration Assistant User Guide Release 7.0(1a)
Hope this helps!