Which configuration parameter defines whether or not the user portion of a directory URI is case
sensitive on Cisco Unified Communications Manager 9.1 or later?

A.
URI Dialing Display Preference in Cisco CallManager Service Parameter

B.
URI Lookup Policy in Cisco CallManager Service Parameter

C.
URI Dialing Display Preference in Enterprise Parameters

D.
URI Lookup Policy in Enterprise Parameters

E.
The user portion of a directory URI is always case sensitive and cannot be changed.

Explanation:
Cisco Unified Communications Manager supports the following formats in the user
portion of a directory URI (the portion before the @ symbol):

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/bat/9_1_1/CUCM_BK_C271A69D_00
_cucm-bulk-administration-guide-91/CUCM_BK_C271A69D_00_cucm-bulk-administration-guide-
91_chapter_01001110.html