Glossary did

From Mixpbx

DID - Direct inward dialing

DID, also called DDI in Europe is a feature offered by telephone companies for use with the customers' phone system, whereby the telephone company allocates a range of numbers associated with one or more phone lines. Its purpose is to allow a company to assign a personal number (base number + extension) to each employee, without requiring a separate phone line for each. That way, telephony traffic can be split up and managed more easily.