Which Cisco Unified Communications Manager partition will be associated with a directory URI
that is configured for an end user with a primary extension?

A.
null

B.
none

C.
directory URI

D.
default

E.
any partition that the Cisco Unified Communications Manager administrator desires

Explanation:
Cisco Unified Communications Manager supports dialing using directory URIs for
call addressing. Directory URIs look like email addresses and follow the username@host format
where the host portion is an IPv4 address or a fully qualified domain name. A directory URI is a
uniform resource identifier, a string of characters that can be used to identify a directory number. If
that directory number is assigned to a phone, Cisco Unified Communications Manager can route

calls to that phone using the directory URI. URI dialing is available for SIP and SCCP endpoints
that support directory URIs.