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

# Telnyx Integration

> Guide for integrating Telnyx with Callers via SIP.

## Prerequisites

* A Telnyx account
* Access to Telnyx Mission Control Portal
* Your Callers account credentials

## Step 1: Create Credentials in Telnyx

1. Log in to your Telnyx Mission Control Portal
2. Navigate to **Voice** > **SIP Trunking** > **Credentials**
3. Click **+ Add New Credentials**
4. Configure the credentials:
   * Set a descriptive name
   * Note down the username and password
   * Save your credentials

<Note>
  SIP devices need to be registered using Telnyx credentials in order to receive inbound calls. Refer to your Telnyx account's Authentication and routing, Connection Settings to verify registration status.
</Note>

## Step 2: Configure SIP in Callers

1. Go to the **Integrations** tab in Callers
2. Click `Connect` under SIP Integration
3. Configure your SIP with the following settings:
   * **URL**: Choose the appropriate regional endpoint:
     * US: `sip.telnyx.com` (Primary: 192.76.120.10)
     * Europe: `sip.telnyx.eu` (Primary: 185.246.41.140)
     * Australia: `sip.telnyx.com.au` (Primary: 103.115.244.145)
     * Canada: `sip.telnyx.ca` (Primary: 192.76.120.31)
   * **Port**: 5060 (UDP/TCP) or 5061 (TLS)
   * **Username**: Your Telnyx Credentials username.
   * **Password**: Your Telnyx Credentials password.
   * **Outbound authentication**: Enable for authenticated outgoing calls.
     * **Auth username**: Your Telnyx SIP connection credentials username.
     * **Password**: Your Telnyx SIP connection credentials password.
   * **Require SIP Register**: Enable the option in order to place outgoung calls from Callers.
     * SIP Realm: `sip.telnyx.com`

<Note>
  SIP devices need to be registered using Telnyx credentials in order to receive inbound calls. Refer to your Telnyx account's Authentication and routing, Connection Settings to verify registration status.
</Note>

## Step 3: Purchase and Configure Numbers

1. In Telnyx Portal:
   * Go to **Numbers**
   * Click **Search & Buy Numbers**
   * Purchase desired numbers
2. For each number:
   * Click on the number to configure
   * Under **Routing**:
     * Set **Connection** to your SIP trunk
     * Configure failover options if needed

## Step 4: Configure Numbers in Callers

1. Return to Callers' **Integrations** tab
2. Go to the `Phone numbers` section
3. Click `Add SIP Numbers`
4. For each number:
   * Enter the full E.164 format (e.g., +12025550123)
   * Select "Telnyx" as the provider
   * Enable "Use for outbound calls" if needed

## Important Notes

* **Regional Configuration**: Choose the closest regional endpoint for optimal latency
* **Transport Protocols**: Telnyx supports UDP/TCP (5060) and TLS (5061)
* **Failover**: Configure both primary and secondary IPs for each region
* **Authentication**: Use username/password authentication
* **Call Capacity**: No limit on concurrent calls by default

<Note>
  For enhanced security and reliability:

  * Enable TLS encryption when possible
  * Configure both primary and secondary IPs
  * Set up failover routing
  * Monitor your connection status in Telnyx Mission Control
</Note>

[Telnyx Integration Guide](telnyx-integration.mdx)