In this article
Introduction
At the end of this article, you will be able to configure a SIP trunk from your Retell AI system to the network.
Currently, Retell AI requires 2 SIP trunks. 1 for inbound call routing and 1 for outbound call routing.
Please note: For support and assistance, please contact Retell AI directly
Configuring inbound Trunk
- The first process to getting your trunk online is to log into your customer portal, and then select the order services tab.
- From here expand the SIP trunk menu, add the number of channels you require and add a new SIP trunk, as outlined in the screenshot below.
- Ensure you accept the service terms and conditions then submit the order before continuing.
- Next, click on the PBX tab located in the top menu bar, drag and drop the SIP trunk object onto the main screen from the left-hand toolbox.
- Now, click on the settings icon and change the mode to IP Auth.
The SIP URI address should be in the following format
{call_id}@5t4n6j0wnrl.sip.livekit.cloud:5060 - In Retell AI, click phone numbers.
- Then click the + button and choose Connect your number via SIP trunking
- Enter your inbound number and the Termination URI (Your SIP server) and click save.
- Assign your Retell AI agent for inbound calls
- Inbound calls should now reach your Retell AI agent.
Configuring outbound trunk
- Drag and drop another SIP trunk object onto the main screen from the left-hand toolbox. Now, click on the settings icon and change the mode to SIP registration.
- In Retell AI, click phone numbers.
- Then click the + button and choose connect your number via SIP trunking
- Add a number for outbound calling and enter your SIP trunk Termination URI (Your SIP server), Username and Password and click save.
- Assign your Retell AI agent for outbound calling
- You can now use your Retell AI agent to make outbound calls. Don't worry if your SIP Trunk shows "Offline" In PBX. Outbound calls will still work.
- You can also use the outbound number for routing calls to the inbound trunk if preferred.
