Article ID:3626
Objective
Direct Inward Dialing (DID) are numbers assigned individually to users in your network by your service provider. This way, you can contact a person within your network directly via DID instead of via extension numbers. An External number is any number (for example an extension number or a personal phone number). You can map a DID number to any external number of your choice. This gives you more flexibility within your network, since it does not matter where you are physically. This article explains how to map a DID number to an external number on the UC500 Series.
Applicable Devices
• UC500
Software Version
• v8.6(0) [UC500 Series]
• v3.2(1) [Cisco Configuration Assistant]
Configure Dial Plan
First, you need to configure the DID dial plan and map it to an internal extension. The next steps guide you through the process of this configuration.
Step 1. Log in to the Cisco Configuration Assistant and choose Configure > Telephony > Dial Plan > Incoming. The Incoming Dial Plan window appears.
Step 2. Click Direct Dialing.
Step 3. Click Add.The Direct Dial to Internal User Extensions window opens.
Step 4. Enter a description in the Description field.
Step 5. In the Incoming Trunk drop-down list, choose the available FXS/DID port (In this case it is 4 FXS/DID-0/2/0).
Step 6. In the DID Range Start Number field, enter the number provided by your service provider.
Step 7. In the DID Range End Number field, enter the number provided by your service provider.
Step 8. In the Internal Extension Start Number field, enter the first number of the range of available extensions.
Step 9. In the Internal Extension End Number field, enter the last number of the range of available extensions.
Note: For the purpose of this configuration, Only one PSTN number and one Internal Extension is configured. Therefore, for each start and end number, the same number is used.
Step 10. Click OK.
Step 11. Click OK to save your settings.
Configure Floating Extension
The final task to do is to configure a floating extension. This floating extension acts as a proxy between the DID and the External number. The next steps guide you through this configuration.
Step 1. In the Cisco Configuration Assistant, choose Configure > Telephony > Users/Extensions > Users and Phones. The Users and Phones window appears.
Step 2. Click Floating Extensions.
Step 3. Click Add. The Add/Edit Floating Extension window opens.
Step 4. In the Number field, enter the extension number you want the DID to be mapped to.
Step 5. Click OK.
Step 6. Click OK to save your settings.