Direct inward dialing (DID), also called direct dial-in (DDI) are telephone numbers offered by telephone companies for use with their customers.
In other words it is a telephone number.
Euphoria Telecom
What is a DID or a DDI? Print
Modified on: Wed, 29 Oct, 2014 at 3:52 PM
Did you find it helpful? Yes No
Send feedbackSorry we couldn't be helpful. Help us improve this article with your feedback.