URI Dialing Overview
Unified Communications Manager supports dialing using directory URIs for call addressing. A directory URI is a uniform resource identifier, a string of characters that can be used to identify a directory number. 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. If that directory number is assigned to a phone, 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.
Directory URI Format
Directory URIs are alphanumeric strings that consist of a user and a host address separated by the @ symbol.
Cisco Unified Communications Manager supports the following formats for directory URIs:
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user@domain (for example, joe@cisco.com)
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user@ip_address (for example, joe@10.10.10.1)
The system supports the following formats in the user portion of a directory URI (the portion before the @ symbol):
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Accepted characters are a-z, A-Z, 0-9, !, $, %, &, *, _, +, ~, -, =, , ?, , ‘, ,, ., /, ( and ) .
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The user portion has a maximum length of 47 characters.
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Cisco Unified Communications Manager automatically applies percent encoding to the following characters when the directory URI is saved in the database:
# % ^ ` { } | \ : ” < > [ ] \ ‘ and spaces.
Note |
The user portion of a directory URI is case sensitive by default. You can edit the user portion to be case insensitive by editing the URI Lookup Policy enterprise parameter. When you apply percent encoding, the digit length of the directory URI increases. For example, if you input joe smith#@cisco.com (20 characters) as a directory URI, Unified Communications Managerstores the directory URI in the database as joe%20smith%23@cisco.com (24 characters). Due to database restrictions, the Directory URI field has a maximum length of 254 characters. |
Cisco Unified Communications Manager supports the following formats in the host portion of a directory URI (the portion after the @ symbol):
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Supports IPv4 addresses or fully qualified domain names.
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Accepted characters are alphanumeric characters, hyphens (-), and dots (.).
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The host portion cannot start or end with a hyphen (-).
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The host portion cannot have two dots in a row.
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The host portion has a minimum length of two characters.
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The host portion is not case sensitive.
Note |
Within Cisco Unified Communications Manager Administration, when you use Bulk Administration to import a CSV file that contains directory URIs with embedded double quotes and commas, you must enclose the entire directory URI in double quotes ("). |