A DID, short for direct inward dialing number, is an individual telephone number routed to a specific destination such as a queue, an agent or an IVR. Outbound campaigns use pools of DIDs as the caller IDs consumers see, and route callbacks to those numbers back to the right campaign.
Each DID builds its own caller-ID reputation, so how many you have and how you assign them shapes your connect rate.
DIDs on a live campaign
A floor in Lahore buys a set of US DIDs from its carrier, spread across area codes in the states it calls. The dialer shows one of those numbers as the caller ID on each outbound call. When a consumer calls the number back, the DID routes them into an inbound group for that campaign, where an agent or the closer team can answer. A callback from someone who missed the first call is often a well-qualified lead.
How DIDs show up in the dialer and reports
On ViciDial, DIDs are set up as inbound routes and as caller IDs on outbound campaigns. Reporting by DID shows outbound connect rate per number and inbound callback volume. A DID whose connect rate drops sharply is probably flagged.
Common mistakes
Letting callbacks to a DID ring out or reach a dead voicemail box. Consumers complain, and the number's reputation suffers.
Using a DID for more calls per day than it can carry without being flagged.
Losing track of which DIDs belong to which client, especially when a campaign ends and numbers are reused.
Buying numbers in area codes far from the leads and expecting local-number answer rates.
How many DIDs a campaign needs
There is no fixed answer. It depends on daily volume, answer rates and how quickly carriers flag numbers on your lists. Track connect rate per DID over time, and retire or rest numbers whose rates fall, rather than guessing a fixed count up front.