What is DID and how does it work?

What is DID and how does it work?

Direct inward dialing (DID), abbreviated as DID, is a method of assigning a unique telephone number to each line, extension, or employee within a company's private branch exchange. The caller dials the number directly and the call reaches the intended person without being transferred.

Technically, it works by the telecommunications operator assigning a block of numbers to the company, which are then mapped to the relevant lines in the PBX. A call arrives via a SIP trunk (voice channel over the internet) or other telephone line, and the PBX routes it to the correct recipient based on the received number.

What is the purpose of a company survey?

Direct dialling eliminates the need for a central reception to handle every call. Customers or business partners who know the direct number of a specific person can reach them immediately without waiting to be transferred.

• Every employee has their own number. - sales staff, accountant and technician each receive their own DID number
• Branches and departments - each branch or team has its own number, even though the central hub is shared
• Marketing monitoring - different DID numbers for different campaigns allow tracking of call origins
• Working from home - employee calls from home, customer sees a fixed company number

Provolba and Virtuální ústředna

With a cloud PBX, lines are added and removed via a web interface. There is no need to physically change wiring or call the operator. A number that is no longer needed can be deactivated, and new ones added within minutes.

Remember that the number (DID) is linked to the contract with the operator, not to a specific telephone or employee, when an employee leaves, you simply redirect it to their successor or deactivate it. On virtualni-ustredna.cz, call forwarding is part of the basic setup from day one.