Most businesses today have several incoming telephone numbers, each one used for a different purpose or department such as customer service, sales, marketing etc. Some companies even have the ability to assign a personal phone number to each employee without requiring multiple physical phone lines, making it possible for telephone traffic to be split up and managed more easily. This powerful framework is only achievable using Direct Inward Dialling (DID).  DID, also known in Europe as DDI (Direct Dial-in), is a service offered by telephone companies, that allows organizations, who operate a private branch exchange (PBX) system, to have multiple telephone numbers lines connected to one or more analog or digital physical circuits to their PBX. The system sends the dialed telephone number to the PBX so that an outside caller can have direct access to the PBX extension, possibly avoiding an auto-attendant. In a business with DID, the telephone…