Create a New Trunk Group

A trunk group is a collection of SIP channels pooled together under a shared configuration profile. Trunk Groups define how calls are distributed across these channels between your PBX and Trunking.io. You'll set one up whenever you need to connect a new system, apply a specific rate deck, or separate customer traffic. Each trunk group establishes common rules for channel capacity, authentication, and endpoints.

Guided Walkthrough

Before You Start…

Have the following prepared:

• Confirm whether your PBX uses IP authentication or SIP credentials.
• Have a Rate Deck ready to assign.
• Decide if the trunk will handle international traffic.

Steps to Create a Trunk Group

1. Go to My Voice Network > Trunk Groups.
2. Click Create New Trunk Group.
3. Fill in the required fields:
   • Trunk Group Name – Choose a clear label (e.g., Dallas PBX Trunk).
   • Channels – Enter the maximum number of concurrent calls.
   • Auth Type – Select IP or SIP.
   • Rate Deck – Select the rate deck to apply.
4. Configure optional settings:
   • Inbound STIR/SHAKEN Header – Select Passthrough or Verstat.
   • International Termination – Toggle On if the trunk should allow international traffic.

Adding Endpoints (For IP Authentication)

If you selected IP Authentication, you’ll need to add at least one endpoint:

1. Click Add Endpoint.
2. Enter the following:
   1. Protocol – Choose UDP, TCP, or TLS.
   2. IP Address – Public IP of your PBX.
   3. Port – Usually 5060 unless your PBX uses a custom port.
   4. Priority – A numeric value (lower number = higher priority).
3. Click Add Endpoint.

Authentication Details (For SIP Authentication)

If you selected SIP Authentication, the system will generate credentials for you:

- SIP Address – Used for registration.

- Password – Unique password for this trunk.

- Domain – SIP domain for your connection.

- Auth Username – Username for SIP authentication.

- Outbound Proxy – sip.trunking.io

Click Copy All to save these details and enter them into your PBX.

Once everything is ready, click Submit to create the trunk group.

Common Questions

Do I need multiple endpoints?
Not necessarily. Multiple endpoints add redundancy, ensuring calls reroute if one IP becomes unavailable.

What protocol should I use?
Most systems use UDP. Use TCP or TLS if your PBX requires them for security or compliance.

What’s Next

• Test Your Trunk Connection to confirm registration or IP authentication is successful.
• Assign DIDs to the new trunk.
• Check Call Routing to ensure calls flow correctly.

Need Help?

If you need assistance, contact us at support@trunking.io for help with trunk configuration.