Hi Kyle,
These are called "Labels" in CME
SCCP: Creating Labels for Directory Numbers
To create a label to display in place of the number next to a line button, perform the following steps.
Prerequisites
Directory number for which the label is to be created is already configured. For configuration information, see the "SCCP: Creating Directory Numbers" section.
SUMMARY STEPS
1. 
enable
2. configure terminal
3. ephone-dn dn-tag
4. label label-string
5. end
DETAILED STEPS
| | Command or Action | Purpose |
|---|
Step 1 | enable Example: Router> enable | Enables privileged EXEC mode. •Enter your password if prompted. |
Step 2 | configure terminal Example: Router# configure terminal | Enters global configuration mode. |
Step 3 | ephone-dn dn-tag Example: Router(config)# ephone-dn 1 | Enters ephone-dn configuration mode. •dn-tag—Unique sequence number that identifies the ephone-dn to which the label is to be associated. |
Step 4 | label label-string Example: Router(config-ephone-dn)# label user1 | Creates a custom label that is displayed on the phone next to the line button that is associated with this ephone-dn. The custom label replaces the default label, which is the number that was assigned to this ephone-dn. •label-string—String of up to 30 alphanumeric characters that provides the label text. |
Step 5 | end Example: Router(config-ephone)# end | Returns to privileged EXEC mode. |
What to Do Next
If you are done modifying parameters for phones in Cisco Unified CME, generate a new configuration file and restart the phones.
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmelabel.html#wp1027739
Cheers!
Rob
"A smile relieves a heart that grieves"
- Stones
