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
Sign in to your Telnyx account.
From the left-hand navigation menu, go to Voice > SIP Trunking.
Click Create SIP Connection.
Step 2: Configure Basic Connection Settings
Enter a friendly name for the SIP connection.
For Type, select IP Address.
Click Create.
You will be redirected to the Connection Details page.
Step 3: Add Your PBX IP Address
In the Connection Details page, click Add IP Address.
Enter your PortSIP PBX public static IP address.
Specify your PortSIP PBX SIP signaling port (typically
5060).
Step 4: Assign DID Numbers
Click the Numbers tab.
Click Assign Number.
Select the DID numbers you want to associate with this SIP connection.
Click Assign Selected Numbers.
Click Save to apply and store the changes.
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:
Sign in to your Telnyx account.
From the left-hand navigation menu, go to Voice > Outbound Voice Profiles.
Click Add New Profile.
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
In the Associated Connections and Applications section, click Add connections/apps to profile.
Select the SIP connection you created earlier.
Click Add connections/apps to profile to associate it with this outbound profile.
Click Save to apply the changes.
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.
Step 1: Create the IP-Based Trunk
Sign in to the PortSIP PBX Web Portal as a System Administrator.
From the left-hand navigation menu, go to Call Manager > Trunks.
Click Add, then select IP Based Trunk.
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.
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.
Step 4: Assign Tenants and DID Pool
Assign the trunk to one or more tenants.
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:
Click OK to save the configuration.
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).
Next Steps
You can now proceed to Configuring Outbound & Inbound Calls to complete your call routing setup.
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