> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chatzy.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Telephony
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The **Telephony** tab manages the **call behavior, quality, and duration control** for your Voice AI Agent.\
These settings help maintain smooth communication while ensuring efficient resource usage during live calls.
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#### User Silence & Hangup
This feature ensures calls are automatically ended when the user disconnects or remains silent for too long - preventing idle or abandoned sessions from consuming system resources.
* **Hangup Calls on User Silence** - When toggled **On**, the system automatically terminates calls after detecting prolonged silence.
* **Timeout (in seconds)** - Defines how long the system waits before ending the call due to silence.\
The default timeout is **10 seconds**, which can be adjusted for your use case.
> 💡 **Tip:** For support or inbound queries, consider increasing the timeout slightly to allow longer thinking pauses.
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#### Call Termination
These settings define global rules for ending a call, regardless of user silence or interaction level.
* **Call Hangup Message** - The custom phrase the AI agent will **speak before disconnecting** the call.\
Example: *“The call will now disconnect. Thank you for speaking with us.”*
* **Call Duration Limit** - Sets the **maximum allowed call time** (in seconds).\
Once this limit is reached, the system will automatically end the call to prevent resource overuse.\
The default duration is **300 seconds (5 minutes)**.
> ⚙️ **Best Practice:** Use shorter call limits for automated outbound campaigns, and longer durations for support or conversational flows.