Definition
Dialed Number Identification Service (DNIS) is a telephony feature that identifies which phone number a caller dialed to reach an organization. DNIS allows contact centers to route calls to appropriate queues, teams, or departments based on the number dialed.
Real-World Example
At their company, a customer success manager at CloudNine Solutions leverages Dialed Number Identification Service (DNIS) to streamline support operations and reduce the backlog of unresolved customer issues. With Dialed Number Identification Service (DNIS) in place, the team routes cases to the best-qualified agents, tracks SLA compliance automatically, and provides self-service options that deflect 30% of incoming volume.
Why Dialed Number Identification Service (DNIS) Matters
Dialed Number Identification Service (DNIS) is a telephony feature that identifies which phone number a caller dialed to reach an organization. When a contact center publishes multiple phone numbers (one for sales, one for support, one for billing, perhaps numbers for different regions or product lines), DNIS lets the phone system see which number the caller dialed and route the call accordingly. The caller never has to navigate a menu; the routing happens automatically based on the dialed number.
DNIS is one of two key call identification mechanisms in CTI integrations. The other is ANI (Automatic Number Identification), which identifies the calling party's number. Together, they give the phone system enough information to make smart routing decisions before the call reaches an agent. In Salesforce Service Cloud Voice, DNIS-based routing is configured in the contact flow, letting different dialed numbers map to different queues, agent groups, or IVR experiences. This is the modern replacement for the manual 'press 1 for sales' menus of older contact centers.
How Organizations Use Dialed Number Identification Service (DNIS)
- •ShieldGuard Security — Publishes separate toll-free numbers for residential customers, commercial customers, and partners. DNIS routes each call to the right team automatically based on which number was dialed.
- •QuickAssist — Uses DNIS to route calls from regional phone numbers to region-specific queues. A caller dialing the European support number reaches European agents during European business hours.
- •Coastal Health — Configured DNIS-based routing for their patient appointment line versus their general inquiries line. Patients calling the appointment number skip the menu entirely.