Changing Outbound Caller ID of a Digital Extension on the NEC SL2100 and SL1100
Sometimes a single user will need their own outbound Caller ID – for instance, if the user has their own private DID. This Tech Tip will demonstrate how to change a displayed caller id number on an outbound call made from the NEC SL1200 or NEC SL1100. (Digital extensions only)
Get Connected
Programming Steps
1. Go to Program 15-01: Extension Basic Setup
2. Select the desired extension number from the ICM Extension Dropdown Menu.

3. Click the checkbox next to 04-ISDN Caller ID

4. Go to Program 21-13: ISDN Calling Party Number Setup for Extensions
5. Enter the desired outbound caller ID in the “Calling Party Number” field, next to the desired ICM Extension Number

6. Apply and upload your changes
Note: This change does take precedent over any outbound trunk calling party numbers.