For CUCM and Unity Connection bug description has been updated, COP file fixes listed releases. So you can upgrade to any of these releases and then apply COP file.https://tools.cisco.com/bugsearch/bug/CSCur00930Downloads HomeProductsUnified Communi...
Leo, Do you have reference for this. Still murky waters:In 9.1 release Stratum 5 no longer enforced. http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/9_1_1/CUCM_BK_RD7D4696_00_cucm-release-notes-911a/CUCM_BK_RD7D4696_00_release-notes...