Connect Twilio to Kollie

Send calls from your Twilio number to a Kollie AI agent using a Twilio Elastic SIP Trunk.

Kollie SIP details: SIP URI sip:luvjtjd3aor.sip.livekit.cloud · domain (without sip:) luvjtjd3aor.sip.livekit.cloud · transport TCP · inbound calls only (outbound calls over your own number aren't available yet). Full reference: Use your own phone number with SIP.

At a glance

Before you start

• An active Twilio account and a Twilio number with voice capability.
• A Kollie agent that is already set up.

Twilio's own reference is its Elastic SIP Trunking documentation.

Part 1: Add your number in Kollie

1. Add the number
   • Go to My Numbers → Add Your Number.
   • Select the country and enter your Twilio number exactly as it appears in Twilio. Then click Add.
2. Attach it to an agent
   • Attach the number to the agent that should answer. See Step 1 of the overview.
3. Note Kollie's SIP URI
   • Kollie's SIP URI is sip:luvjtjd3aor.sip.livekit.cloud. You'll use it in step 6.

Part 2: Build the trunk in Twilio

4. Create the trunk

   • In the Twilio Console, open Elastic SIP Trunking → Trunks → Create new trunk.
   • Give it a name such as kollie. The name is only for your own overview.

5. Turn on transfers (optional)

   In the trunk's General settings, enable:

   • Call Transfer (SIP REFER), so the agent can hand calls over.
   • PSTN Transfer, which you also need for transfers to external phone numbers.

   Notes:

   • Twilio only supports blind transfers here: the agent can't speak to the recipient before handing over.
   • Twilio bills transfers to external numbers at its normal rates.

6. Set the Origination URI

   Under Origination, add Kollie's SIP URI followed by these two parameters:

   sip:luvjtjd3aor.sip.livekit.cloud;edge=frankfurt;transport=tcp
   

Copy it exactly. A stray space or a missing semicolon is enough for Twilio to reject it.

7. Attach your number to the trunk

   Under Numbers, add the Twilio number you added in Kollie. Calls to numbers that aren't attached to this trunk won't reach Kollie.

Test checklist

Inbound

• Call the Twilio number from another phone. The attached agent answers.
• The caller's real number appears in Agent Calls History.
• Audio works in both directions.

Transfers

• During a test call, ask the agent to transfer you.
• The transfer target is in international format and appears in the Twilio logs.

Troubleshooting

You can find failed calls in the Twilio Console under Monitor → Logs → Voice.