Configuring Telnyx IP Authentication Trunk

Before proceeding with the next steps, you need to purchase a DID on the Telnyx platform.

Create a SIP Trunk on the Telnyx Platform

To create a new SIP trunk on the Telnyx platform, follow these steps.

Step 1: Create a SIP Connection

1. Sign in to your Telnyx account.

2. From the left-hand navigation menu, go to Voice > SIP Trunking.

3. Click Create SIP Connection.

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Step 2: Configure Basic Connection Settings

1. Enter a friendly name for the SIP connection.

2. For Type, select IP Address.

3. Click Create.

   • You will be redirected to the Connection Details page.

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Step 3: Add Your PBX IP Address

1. In the Connection Details page, click Add IP Address.

2. Enter your PortSIP PBX public static IP address.

3. Specify your PortSIP PBX SIP signaling port (typically 5060).

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Step 4: Assign DID Numbers

1. Click the Numbers tab.

2. Click Assign Number.

3. Select the DID numbers you want to associate with this SIP connection.

4. Click Assign Selected Numbers.

5. Click Save to apply and store the changes.

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Create an Outbound Voice Profile

To enable outbound calling for your SIP connection, you must create and associate an Outbound Voice Profile on the Telnyx platform.

Follow these steps:

1. Sign in to your Telnyx account.

2. From the left-hand navigation menu, go to Voice > Outbound Voice Profiles.

3. Click Add New Profile.

4. Enter a friendly name for the profile (for example, PortSIP Outbound), then click Create.

   • You will be redirected to the Outbound Voice Profile details page.

Associate the SIP Connection

1. In the Associated Connections and Applications section, click Add connections/apps to profile.

2. Select the SIP connection you created earlier.

3. Click Add connections/apps to profile to associate it with this outbound profile.

4. Click Save to apply the changes.

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Configure an IP Authentication Trunk in PortSIP PBX

The Telnyx IP Authentication Trunk corresponds to an IP-Based Trunk in PortSIP PBX.

❗Important IP-Based Trunks must be configured at the System Administrator level. Once created, the trunk can be shared with one or more tenants.

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Step 1: Create the IP-Based Trunk

1. Sign in to the PortSIP PBX Web Portal as a System Administrator.

2. From the left-hand navigation menu, go to Call Manager > Trunks.

3. Click Add, then select IP Based Trunk.

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Step 2: Configure Basic Trunk Settings

Enter the following information:

• Name Enter a friendly name for the trunk (for example, Telnyx-IP-Trunk).

• Brand Select a Telnyx location closest to your PBX deployment, for example:

  • Telnyx - US

Click Next to continue.

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Step 3: Configure Call Capacity

• Max Concurrent Calls Defines the maximum number of simultaneous calls that PortSIP PBX can establish through this trunk.

  • Adjust this value according to your Telnyx service plan and expected call volume.

  • For most deployments, the default value is sufficient.

Leave all other options at their default values unless you have specific requirements.

Click Next to continue.

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Step 4: Assign Tenants and DID Pool

1. Assign the trunk to one or more tenants.

2. Provide Telnyx DID numbers to each tenant using the DID Pool.

❗Important

• Each DID can be assigned to only one tenant.

• A tenant assigned to this trunk can use only the DID numbers in its DID pool to:

  • Create inbound and outbound call rules

  • Configure outbound caller IDs for extensions

DID Pool Format Examples

The DID pool may contain a single number, multiple numbers, ranges, or a combination:

16468097065
16468097065;16468097066
16468097065-16468097066;16468097069
16468097065-16468097066;16468097070-16468097080

Click OK to save the configuration.

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Expected Result

• The IP-Based trunk configuration is now complete.

• In the trunk list, the trunk status will display Online.

  • This is expected behavior for IP-Based Trunks, which always show a Registered status.

In the trunk list, you will see the status displayed as Online (for IP Based Trunk it always displays Registered).

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Next Steps

You can now proceed to Configuring Outbound & Inbound Calls to complete your call routing setup.