Overview
Max Call Duration
- Maximum call duration: Sets the maximum allowable runtime for any single call session handled by the agent.
- Allowed range and unit: Specified in seconds (e.g.,
90for 1.5 minutes,300for 5 minutes,1800for 30 minutes). Supported range is10to3600seconds (up to 60 minutes). - What happens when the limit is reached: When the active call duration reaches this limit, the platform automatically and gracefully terminates the call.
- Why it matters: Protects against runaway calls, infinite loops, and unexpected billing charges from dropped caller connections.
Silence Timeout
- What counts as silence: Any period during a call where the Voice Activity Detection (VAD) engine detects no human speech input. Ambient background noise is automatically filtered out.
- When the timer starts: The silence timer starts (and resets) immediately after the agent finishes speaking and is waiting for a response from the caller, or during pauses between caller conversational turns.
- What happens after timeout: If the caller remains silent for longer than the configured timeout, the agent automatically ends the call session to free the telephony channel.
- Allowed range and unit: Configured in seconds (supported range:
5to60seconds; default is10seconds).
Telephony Provider
- Supported providers:
- Twilio — Global carrier connectivity and high reliability.
- Plivo — Cost-effective voice routing, especially for India and APAC destinations.
- Acefone — Enterprise cloud telephony and virtual PBX routing.
- How to configure and select:
- Tenant Default: Automatically inherits the default telephony provider configured in your organization’s Integrations.
- Explicit Selection: Choose a specific provider from the dropdown to route calls for this particular agent through a dedicated account.
Caller ID
- Purpose: The phone number presented as the caller identity (CLI) on the recipient’s phone screen during outbound calls and automated campaigns.
- Source of the number: Sourced from verified numbers purchased or registered under the Phone Numbers section.
- Requirements:
- Must be a valid phone number in standard E.164 format (e.g.,
+14155552671or+919876543210). - Must be verified or owned under your connected telephony carrier account (see Caller ID Verification).
- Must be a valid phone number in standard E.164 format (e.g.,
- Outbound-call behavior: The carrier transmits this number in SIP signaling headers, displaying it to the callee. Inbound calls returning to this number route directly to the assigned agent.
Integrations
How telephony credentials and phone numbers are connected to the agent:1
Connect Provider Credentials
Go to Integrations in the dashboard and add your telephony credentials (e.g., Twilio Account SID and Auth Token, or Plivo Auth ID and Auth Token). Credentials are automatically validated upon saving.
2
Add and Verify Phone Numbers
Go to Phone Numbers to buy numbers directly through your connected carrier or verify existing company numbers for outbound Caller ID use.
3
Bind to Agent in Call Tab
Open your agent in Agent Studio, switch to the Call Tab, and choose the Telephony Provider and verified Caller ID. Save your changes.
Configuration Example
Complete Call Tab Configuration
Below is an example of a complete Call Tab configuration:Expected Call Behavior
- Outbound Caller Display: The callee sees
+14155550199on their incoming call screen. - Silence Handling: If the conversation ends and the callee doesn’t hang up, the agent waits
10 secondsof silence before automatically hanging up. - Duration Limit: If the call exceeds
300 seconds(5 minutes), the session is terminated automatically to prevent open-line billing.

