What is a Call Queue?

Last Updated September 28, 2026

A call queue is a waiting line within a contact center that holds inbound customer interactions until the appropriate agent or resource is available. Queue logic can determine which interactions wait together, how they are prioritized and which employees are eligible to receive them.

How a call queue works

1. An interaction enters the contact center.
2. Routing identifies the customer's likely need or destination.
3. The interaction is assigned to a queue or routing group.
4. Priority and eligibility rules are applied.
5. An available qualified agent receives the interaction.
6. Queue and outcome data are recorded for analytics.

Common queue design criteria

• Customer intent.
• Agent skill.
• Language.
• Customer segment.
• Service tier.
• Channel.
• Geography.
• Priority or urgency.
• Business hours and availability.

Queue vs. routing

How queue management affects CX

Long or poorly managed queues increase wait time, abandonment and customer effort. But creating too many narrow queues can fragment staffing and reduce flexibility.

The best design balances specialization with the ability to use available capacity across the operation.

AI and intelligent queue management

AI can help identify intent, predict likely outcomes and support more dynamic routing. Predictive models may also estimate wait time or identify interactions that require specialized handling.

AI should complement clear routing logic and staffing discipline rather than compensate for poor queue design.

Queue metrics

• Interactions waiting.
• Longest wait.
• Average speed of answer.
• Service level.
• Abandonment.
• Backlog for asynchronous channels.
• Transfer rate.
• Resolution by queue.

Also related

• Intelligent Call Router
• Intelligent Call Routing System
• Load Balancing
• AI Routing
• Call Distribution
• Automatic Call Distribution