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Direct Inward Dial (DID)

What Does Direct Inward Dial (DID) Mean?

Direct inward dial (DID) is a special service provided by telecommunication companies for users of private branch exchange (PBX) systems. With the help of this system, a company can gain different set of numbers for different sections of the office. This means that the company can have different phone numbers over the same machinery. Thus, if a customer of the company is using this service and wants to call with a specific problem, they can directly contact the required person for resolving their enquiries. This is very important for a business as it saves time and ensures customer satisfaction, all in a very low budget.

Direct inward dial (DID) is also known as direct dial-in.


Techopedia Explains Direct Inward Dial (DID)

A direct inward dial system can be understood more clearly with an example. Say a given company has hired a telecommunications company with eight trunk lines (or physical lines). It has rented 100 phone numbers from that company. However, as it has eight trunk lines, it can accommodate a maximum of eight calls at once, and all other callers receive a busy signal. Those people can either wait until the call is disconnected, or leave a message. In both cases, the satisfaction level of the customer would be low, and it can be very risky if the customer is even a little impatient. However, if the company uses a DID system on the PBX, it can automatically divert the call to the necessary operator or workstation. This saves time and money, as an additional PBX operator is not required.



Direct Inward Dialing, Direct Dial-In

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