User guide

Directory URIs are alphanumeric strings consisting of a user and a host address separated by the @ symbol.
Cisco Unified Communications Manager supports the following formats for directory URIs:
• user@domain (for example, [e-mail])
• user@ip_address (for example, joe@10.10.10.1)
Cisco Unified Communications Manager supports the following formats in the user portion of a directory
URI (the portion before the @ symbol):
• Accepted characters are a-z, A-Z, 0-9, !, $, %, &, *, _, +, ~, -, =, \, ?, \, ‘, ,, ., /.
• The user portion has a maximum length of 47 characters.
• The user portion accepts percent encoding from %2[0-9A-F] through %7[0-9A-F]. For some accepted
characters, Unified CM automatically applies percent encoding. See below for more information on
percent encoding.
• The user portion is case-sensitive or case-insensitive depending on the value of the URI Lookup Policy
enterprise parameter. The default value is case-sensitive.
Cisco Unified Communications Manager supports the following formats in the host portion of a directory
URI (the portion after the @ symbol):
• Supports IPv4 addresses or fully qualified domain names.
• Accepted characters are a-z, A-Z ,0-9, hyphens, and dots.
• The host portion cannot start or end with a hyphen.
• The host portion cannot have two dots in a row.
• Minimum of two characters.
• The host portion is not case sensitive.
Due to database restrictions, the Directory URI field has a maximum length of 254 characters.
You can also enter a directory number in the user portion of a directory URI. However, Cisco Unified
Communications Manager may treat the directory URI as a directory number depending on which Dial
String Interpretation option you choose for the SIP Profile.
Note
For compatibility with third party call control systems, Cisco recommends setting the value of the URI
Lookup Policy enterprise parameter to case insensitive.
Note
Percent encoding of directory URIs
In the user portion of a directory URI, Unified CM automatically applies percent encoding to the following
characters when the directory URI is saved in the database:
# % ^ ` { } | \ : ” < > [ ] \ ‘ and spaces
When percent encoding is applied, the digit length of the directory URI increases. For example, if you input
joe smith#@cisco.com (20 characters) as a directory URI, Cisco Unified Communications Manager stores
Cisco Unified Communications Manager Bulk Administration Guide, Release 9.1(1)
OL-28580-01 583
Directory URI format
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