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Telnyx Integration

A step-by-step guide to connect your Telnyx phone numbers via SIP trunking
This guide walks you through connecting your Telnyx phone numbers using SIP trunking. You will create an FQDN connection in Telnyx, configure outbound authentication, assign your numbers, and import them into Famulor.
One-time setup: You only need to create the SIP connection once (Steps 1-5). For each additional phone number after that, simply assign it to your existing connection (Step 5) and import it (Step 7).
Why FQDN? The connection type must be FQDN - not Credentials or IP Address. Credential connections require SIP REGISTER for inbound calls, which our platform does not send. FQDN connections route inbound calls directly to our SIP server and authenticate outbound calls via credentials.
Pricing snapshot: Telnyx publishes public starting prices for numbers and SIP trunking, while country-specific details are provided through the live pricing sheet.
  • Inbound / number rental: local numbers from $1/month; inbound local calls from $0.0035/min
  • Outbound / calling: international outbound calls from $0.005/min
  • Germany / Switzerland / United Kingdom / United States: exact live country-specific rates are available in Telnyx pricing sheets rather than directly on the summary page
  • Official pricing: Numbers pricing and SIP trunking pricing

Step 1: Create SIP Connection

  1. Log in to the Telnyx Mission Control Portal
  2. Navigate to Real-Time Communications -> Voice -> SIP Trunking
  3. Click Create SIP Connection
  4. Name: Choose a name (for example, my-company SIP trunk)
  5. Type: Select FQDN
  6. Click Create - this opens the setup wizard
    Create SIP connection in Telnyx

Step 2: Authentication and Routing

The wizard takes you to the Authentication and routing step. Here you add the FQDN for inbound call routing and set up outbound credentials.

Add FQDN

  1. Click ”+ Add FQDN” and enter:
    • DNS Record Type: A
    • FQDN: {famulorsipadress}.sip.livekit.cloud
    • Port: 5060
  2. Click Save
    Add FQDN to Telnyx connection

Inbound Calls Routing

Scroll down to the Inbound calls routing section on the same page:
  1. SIP subdomain: Enter a name (for example, yourcompany) - this creates yourcompany.sip.telnyx.com
  2. Receive SIP Subdomain calls: Set to From Anyone
  3. Primary FQDN: Select {famulorsipadress}.sip.livekit.cloud from the dropdown
    Configure inbound calls routing

Outbound Authentication

Scroll down further to the Outbound calls authentication section:
  1. Method: Select Credentials
  2. Set a username and password - save these, you need them when importing the number into Famulor
    Set outbound credentials
Click Next at the bottom of the page.

Step 3: Configuration

The wizard shows the Configuration page with connection details, webhooks, and advanced settings. You do not need to change anything here - just verify that the Type shows FQDN Connection and click Next.
Configuration page

Step 4: Inbound and Outbound

The wizard goes through the Inbound and Outbound steps. Since you already configured these in Step 2, verify the settings and click Next on each page. On the Outbound page, make sure:
  1. Outbound voice profile: Select your profile (or “Default”)
  2. Localization country: Select your country
  3. Channel limit: Set to 10 or higher
    Configure outbound settings
If you do not have an Outbound Voice Profile, go to Voice -> Settings -> Outbound Voice Profiles -> Create Profile. Make sure to enable the countries you want to call under Allowed Destinations.

Step 5: Assign Numbers

The last step of the wizard is the Numbers page:
  1. Click Assign numbers
  2. Select the phone number(s) you want to use

Step 6: Enable Geographic Permissions

  1. Go to Voice -> Settings -> Outbound Voice Profiles
  2. Click Edit
    Open outbound voice profiles
  3. Click your profile -> Allowed Destinations
  4. Enable the countries/regions you need to call
    Enable geographic permissions
If you skip this step, outbound calls fail with a 403 error: “Dialed number is not included in whitelisted countries.”

Step 7: Import Number to Famulor

  1. Open Phone Numbers directly in your Famulor dashboard. If it takes you to the login page, log in first - it automatically redirects you to Phone Numbers.
  2. Click “Integrate SIP trunk” (top-right corner of the page)
    Import number via SIP trunk in Famulor
  3. Fill in your phone number and SIP credentials:
    Phone number: Your Telnyx number (for example, +1 555 0123)
    Username: The outbound username from Step 2
    Password: The outbound password from Step 2
    
  4. Enter outbound settings:
    SIP address: sip.telnyx.com
    Outbound format: International (with + in front)
    
    Configure outbound settings in Famulor
SIP address must be sip.telnyx.com - do NOT use your SIP subdomain (for example, yourcompany.sip.telnyx.com). The subdomain is only for inbound routing on the Telnyx side. Using it as the outbound SIP address results in 404 Not Found errors.
  1. Select Authorization type: IP Address and add the Telnyx IP addresses for your region:
    • US: 192.76.120.10
    • Europe: 185.246.41.140 and 185.246.41.141
    • Australia: 103.115.244.145 and 103.115.244.146
    Configure inbound IP addresses in Famulor
You can add all IP addresses regardless of region - only the relevant ones are used.
  1. Select the country where your SIP trunk is located.
    Select SIP trunk country in Famulor

Step 8: Verify Setup

To test your Telnyx number, assign it to AI assistants. Inbound and outbound require separate assistants:

Test Inbound

  1. Go to AI Assistants -> create a new assistant (or use an existing one)
  2. Set assistant type to Receive phone calls
  3. Assign your Telnyx phone number to the assistant
  4. Call your Telnyx number from any phone - the AI assistant should answer

Test Outbound

  1. Create a second assistant with type Make phone calls
  2. Assign the same Telnyx phone number to this assistant
  3. Click Speak to assistant -> Phone call - Famulor calls your personal phone using the Telnyx number
A single assistant cannot handle both directions. You need one Receive phone calls assistant and one Make phone calls assistant, both with the same phone number assigned.

Security Requirements

Your SIP credentials need to be secure:
  • Username: Your provider-supplied username
  • Password must have:
    • 12 or more characters
    • Numbers
    • Upper and lowercase letters
    • Special characters recommended

Common Issues

Go to Voice -> Settings -> Outbound Voice Profiles -> your profile -> Allowed Destinations and enable the destination country you are trying to call.
  • Make sure the connection type is FQDN (not Credentials or IP Address)
  • Verify the FQDN is set to {famulorsipadress}.sip.livekit.cloud on port 5060
  • Check that the phone number is assigned to the FQDN connection (not another connection)
  • Verify the SIP address is sip.telnyx.com (not your SIP subdomain)
  • Check that credentials match between Telnyx and Famulor
  • Make sure an Outbound Voice Profile is attached to the connection
  • Verify the Localization country is set correctly
Credential connections require SIP REGISTER for inbound calls. Famulor uses direct SIP routing (no registration), so FQDN connection type is required. FQDN still supports credential-based authentication for outbound calls.

Need help setting up? Our support team specializes in SIP onboarding and will guide you through the full setup for your specific phone system.