
Chapter 42 Cisco IP Phone Configuration
Configuring Directory Numbers
Table 
| Field | Description | 
| 
 | 
 | 
| Disable ring on this | To stop the phone from ringing to indicate incoming | 
| line | calls, check the check box. | 
| 
 | This setting only applies to the current device. | 
| 
 | 
 | 
| External Phone | Enter the phone number (or mask) used to send Caller ID | 
| Number Mask | information when placing a call from this line. | 
| 
 | You can enter a maximum of 30 number and “X” | 
| 
 | characters. The Xs represent the directory number and | 
| 
 | must appear at the end of the pattern. For example, if you | 
| 
 | specify a mask of 972813XXXX, an external call from | 
| 
 | extension 1234 displays a caller ID number of | 
| 
 | 9728131234. | 
| 
 | 
 | 
Related Topics
•Cisco IP Phone Configuration, page 
•Resetting a Phone, page 
•Adding a Directory Number, page 
•Updating a Directory Number, page 
•Cisco IP Phones, Cisco CallManager System Guide
•Phone Features, Cisco CallManager System Guide
•Phone Configuration Checklist, Cisco CallManager System Guide
| 
 | Cisco CallManager Administration Guide | 
| 
 | 
