Basic concept of using DID personal number

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DID numbers is basically stands for Direct Inward Dialing Numbers, this is a feature which is offered by the companies for use from the customers PBX systems. The telephone companies allocate wide range of numbers which are connected with one or may be more than one phone lines. So this is the way DID numbers are used for the business purpose because they are the numbers which can assign to each employee of the companies with a single IP. DID personal number helps customers to get more business towards it and provide the great services.