IP Office DDI | DID Incoming Call Route

How to create a new DDI or DID number

A Direct Inward Dial (DID) or Direct Dial-in (DDI) number is a great way to route calls directly to an internal extension or hunt group.

It has three main benefits:-

1.      The user or department who can now give out a direct number for people to contact them on.

2.      It means that calls are not tying up the main number and reception.

3.      It makes it much easier for callers to get straight through to the person or department they need to speak to.

Question is: How do you set up a  new DID number or DDI number on the Avaya IP Office system?

Fortunately it is quite straightforward….

Incoming Call Route

The first thing we need to do is to create a new incoming call route to tell the Avaya system what to do with the call.

Open up the Avaya IP Office manager application and go to Incoming Call Route.

You can expand the Incoming Call Route and see how existing ones are configured on the system or simply right click and select New

The configuration is based on number matching with a few different elements. In the example below I’m specifying the line group ID of the trunk on which the call was received and matching with the Incoming Number.

When the system detects an incoming call it tries to match up the number dialled to the incoming number field on an Incoming Call Route. So that if a caller dialled 020 3891547 the system would match the last three digits of the number to the incoming call route just created.

The next step is determining what the system is going to do with the call.

Click on the Destinations tab and use the drop down box to select where you want the call routed to.

You can select individual extensions, pickup groups or voicemail.

OK the changes and save the configuration.


This change can be merged into the configuration of the system so no reboot required.