Twilio

Twilio Elastic SIP Trunking is the simplest way to bring an existing Twilio number into Callina — pay-as-you-go, no commitment.

Step 1 — Twilio side

1. In the Twilio Console → Elastic SIP Trunking, create a new trunk.
2. Under Termination, set the Termination URI to the host shown in Callina → Settings → SIP → Twilio.
3. Add the Callina IPs to the IP Access Control List.
4. Optional: enable Credential Lists for password auth.
5. Under Origination, set the Origination URI to your Callina SIP endpoint.
6. Associate your DIDs with the trunk.

Step 2 — Callina side

In Callina → Settings → SIP:

1. Provider: Twilio.
2. Paste the Termination URI, credentials.
3. Save.

Step 3 — Test

Call your Twilio number — Anna answers in under 3 seconds.

Troubleshooting