> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ouraicalling.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Telnyx SIP trunk

> Configure a Telnyx FQDN connection and its regional signaling sources

## Recommended profile

Create a Telnyx **FQDN connection** whose primary destination is the platform SIP FQDN. Assign the DID, and configure Telnyx ANI and DNIS number formats as `+E.164`.

On the platform, use the exact `+E.164` DID and **Provider source IPs**. Telnyx credentials or IP authentication for calls into Telnyx are outbound settings; they do not document digest authentication from Telnyx to an arbitrary FQDN destination.

Allow both signaling addresses for the connection's selected inbound region:

| Region      | Sources                                    |
| ----------- | ------------------------------------------ |
| US          | `192.76.120.10/32`, `64.16.250.10/32`      |
| Europe      | `185.246.41.140/32`, `185.246.41.141/32`   |
| Australia   | `103.115.244.145/32`, `103.115.244.146/32` |
| Canada      | `192.76.120.31/32`, `64.16.250.13/32`      |
| Middle East | `185.246.42.128/32`, `185.246.42.129/32`   |
| Asia (beta) | `103.115.244.158/32`, `103.115.244.159/32` |

The LiveKit quickstart uses TCP 5060; Telnyx also supports TLS 5061. Re-open the Telnyx live network page before saving because regional addresses can change.

## Validate

Place one external inbound call and verify the call record, assigned assistant, and two-way audio. If it fails, check the connection's inbound region and the DID format before widening any address range.

Sources: [LiveKit Telnyx guide](https://docs.livekit.io/telephony/start/providers/telnyx/), [Telnyx authentication directions](https://developers.telnyx.com/docs/voice/sip-trunking/authentication/credential-types), [Telnyx live SIP network data](https://sip.telnyx.com/?lang=portal). Accessed 22 August 2026.