Hello, a customer requires migration from CUCM 6.1(2) to 7.1(3).Cisco has announced EoS/EoL for Product Part Number of CUCM Version 7.1 Upgrades:http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps556/end_of_life_notice_c51-582136.ht...