Hangup and Disconnect Bolna Voice AI calls

How to Configure Call Hangup

Bolna offers multiple ways to intelligently end voice calls based on user behavior and conversation context.

Hangup Methods

Silence Detection
Prompt-Based Hangup

Set a silence time threshold (in seconds) for detecting user inactivity. If no audio is detected for the specified duration, the call disconnects automatically, preventing unnecessary call durations.

Bolna Voice AI call hangup settings showing silence time threshold configuration

Add a custom prompt that evaluates whether the conversation is complete. The LLM assesses the conversation context and decides when to end the call.

Custom prompt configuration for intelligent call hangup in Bolna Voice AI

Since this is prompt-based, it may not be 100% accurate. Tune the prompt based on your use case for best results.

Example hangup prompt:

hangup prompt example

You are an AI assistant determining if a conversation is complete. A conversation is complete if:

1. The user explicitly says they want to stop (e.g., "That's all," "I'm done," "Goodbye," "thank you").
2. The user seems satisfied, and their goal appears to be achieved.
3. The user's goal appears achieved based on the conversation history, even without explicit confirmation.

If none of these apply, the conversation is not complete.

Personalized Hangup Message

Add a closing message spoken by the agent as the final message before the call ends. This accepts dynamic context variables using {} for a personalized closing statement.

Hangup message configuration showing custom closing statement with dynamic context variables

Use variables like {first_name} in your hangup message for a personal touch, e.g., “Thank you , have a great day!”

Call Duration Limits

Set a maximum call duration (in seconds) for automatic termination. Once the limit is reached, the call ends automatically — a safety net against runaway calls.

Duration limits vs. hangup prompts

Feature	Duration Limits	Hangup Prompts
Trigger	Hard time-based cutoff	Context-aware conversation analysis
Accuracy	100%, always triggers at set time	Prompt-dependent, may need tuning
Use case	Safety net for runaway calls	Natural, intelligent call endings
Configuration	Set duration in seconds	Write a custom evaluation prompt

Use both together: hangup prompts for natural conversation endings, duration limits as a hard safety net.

Call Status List

Monitor call statuses in real time

Hangup Status Codes

Understand who ended the call and why

Call Pricing

Understand how call duration affects cost

Terminate live callsOptimize call lengths with Bolna Voice AI by setting duration limits. Automatically terminate calls exceeding limits for better resource management.

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​How to Configure Call Hangup

​Hangup Methods

​Personalized Hangup Message

​Call Duration Limits

​Duration limits vs. hangup prompts

​Related Features

Call Status List

Hangup Status Codes

Call Pricing

How to Configure Call Hangup

Hangup Methods

Personalized Hangup Message

Call Duration Limits

Duration limits vs. hangup prompts

Related Features