Hi,
Cisco DLU have gone end of sale , so, customer needs to place order for UCL/CUWL licenses.
http://www.cisco.com/c/en/us/products/collateral/unified-communications/unified-communications-manager-callmanager/eos-eol-notice-c51-732309.html
If the customer has existing UCL/CUWL licenses which have been ordered for CUCM version 9 but using CUCM7/8 then, u can speak to licensing team to get licenses for CUCM 7/8.
Lastly, customer can also go for upgradation to CUCM9/10, provided they have valid ESW and UCSS contract[which is now SWSS] and then,use these ordered licenses.
regds,
aman