SIP Uniform Resource Identifier (URI) based dialing One of the 9 newest feature for CUCM version 9
This is beyond anything you imagine Finally we will forget about calling each other by extension number and the we will start typing the email ID instead to make a call. Seriously SIP URI can be best compared to an email address such as Aysar.Mohamed@ccieroot.com or Aysar.Mohamed@mynaghi.com.sa . A users can dial the called party via URI if they are using 8961, 9951 or 9971.
make sure you have to upgrade the IP Phone firemware to 9.3.1

A SIP address or SIP URI is a Uniform Resource Identifier written in user@domain.tld format (semantically, much like an e-mail address). It addresses a specific telephone extension. A SIP URI can be automatically imported from LDAP (provided the cluster is integrated with an LDAP server such as a mail or the msRTCSIP-primaryuseraddress attribute.

Configuration Steps:

The user name is case sensitive however host is case insensitive (RFC 3261). This parameter is configurable starting CUCM 9.1 (under Enterprise Parameters – URI lookup policy)

Go to Enterprise Parameter

 

Then when you import the user from LDAP make sure the URI Map to the appropriate LDAP attribute

 

 

Now if you go to the End User Configuration you will find the Filed of Directory URI is your Email

 

 

 

 

 

Now Configure a phone and Add Dn as you normally Do then go back to the end user and associate the Device and select the primary DN which you want to bind the Directory URI to it

 

 

Now Check the DN

 

Its automatically bind to the DN

*The Directory URI is put into an automatically generated partition called “Directory URI”.  If you wanna call other DN with Directory URI configured, make sure your CSS has the partition Directory URI.*
You can try to make a call now.  It only supports on hook dialing for URI dialing, so you press the new call softkey, the press the “A B C” softkey so that you can enter alphanumeric characters.
If you don’t want to call the full directory URI, you want to call without the domain name, make sure you change the following in the Enterprise parameter.

 

Now let’s Test it by dialing

 

 

 

 

and yes it’s Calling by dialing the email address aysar.mohamed@mynaghi.com.sa not the extension