Configuring Vonage IP Authentication Trunk

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

Create a SIP Trunk on the Vonage platform

You can also reference the Vonage documentation for configuring the SIP Trunk.

To create a new SIP trunk on the Vonage platform:

  1. Navigate to the menu Build & Manage > SIP.

  2. By default, Vonage has created a SIP trunk for you. You can click the settings icon to adjust its settings or click Create New to set up a new SIP trunk. In this guide, we will demonstrate how to create a new trunk.

  3. Click Create New and enter a domain for your trunk, such as “portsip,” and click Create.

  1. Once the SIP trunk is successfully created, you will automatically be directed to the trunk details page.

  1. Click Add Authentication under the Outbound Calling section you will be redirected to the Authentication page, under Access Control List(ACL), input your PortSIP PBX static public IP Address here for the IP Address field, and enter 32 for the Range field.

  1. After adding the IP Address, the Access Control List(ACL) section will display as enabled in green, indicating that the IP authentication is enabled.

If you have added the Access Control List (ACL) for authentication, you must not add the User Key and Secret, as they cannot be enabled simultaneously.

  1. Click Back. On the trunk details page, you will see that Outbound Calling is displayed as ready. Please copy and note the Vonage SIP trunk's domain, in this case, they are below, you can pick up one near your PortSIP PBX location:

    • portsip.sip-us.vonage.com

    • portsip.sip-eu.vonage.com

    • portsip.sip-ap.vonage.com

  1. Under the Inbound Calling section, add the URI so that the Vonage SIP trunk knows how to route inbound calls to your PortSIP PBX. Simply input the priority(0-100), such as 1, and enter the URI, which is your PortSIP PBX IP address or domain (e.g., 44.242.60.185 or pbx.portsip.com).

    • Priority: Set the priority of the SIP trunk using unique numbers from 0 to 100. Vonage will process calls based on the set priority, with 0 being the highest priority. Keep in mind that if the priority values are not unique, Vonage cannot guarantee the delivery of calls according to the priority.

    • Timeout: Set a timeout for the SIP URI in the text box next to it. The accepted values range from 2000 ms to 20000 ms. If no value is entered, Vonage will use a default timeout of 5000 ms.

    • TLS: Vonage supports TLS for forwarded calls. To enable this, please check the TLS box in the SIP URI section. By default, traffic is sent to the port 5061. for example, if you enabled the TLS, and your PortSIP PBX listened on port 5063 for TLS, you need to add the URI 44.242.60.185:5063.

    • SRTP: Vonage will also encrypt media using SRTP if necessary. To do that please check the SRTP box in SIP URI section.

  1. Click the + button to add the URI. Once added, the URI will be successfully displayed.

  1. Add one or multiple numbers to this SIP Trunk by clicking the Link all... or Link button Link numbers section. If there are no numbers, you can buy them, and it will redirect you to the buy number portal. In the numbers dashboard, you can easily filter, link, and unlink multiple numbers.

  1. Once the number is successfully linked, Vonage will display the information indicating that you are ready to receive calls.

Configure Register Based Trunk in PortSIP PBX

The IP Registration trunk refers to the IP Based Trunk in PortSIP PBX. You can configure the Register Based Trunk at either the PortSIP PBX system administrator level or the Tenant Admin level:

  • If configured at the system administrator level, you can share this trunk with tenants.

  • If configured at the tenant admin level, this trunk can only be used by the tenant itself.

Please follow the below steps:

  1. Sign in to the PortSIP PBX Web Portal as a System Administrator or Tenant Admin. Navigate to the left menu and select Call Manager > Trunks.

  2. Click the Add button to open a menu. From the menu, choose IP Based Trunk.

  1. Enter the trunk name and choose the brand:

    • Name: Enter a friendly name for the trunk.

    • Brand: Select Vonage for this field.

    • Hostname or IP Address: Paste the Vonage SIP trunk domain that you copied in previous steps

  1. Click the Next button, you can adjust the options for the trunk.

    • Max Concurrent Calls: This field sets the maximum number of calls that PortSIP can establish with this trunk. You can adjust it to an appropriate value.

    • We recommend keeping the default settings for other options unless you have specific requirements.

  1. This step is only available when configuring the Register-Based Trunk at the System Administrator Level. Click the Next button to assign this trunk to the tenants and provide your Vonage DIDs/Numbers to them with the DID Pool (DID numbers). A DID can be only assigned to one tenant.

    • A tenant assigned to this trunk can only use the DID numbers within the DID pool range to create inbound and outbound rules and configure the outbound caller ID for extensions.

    • DID Pool: The DID pool can consist of a single number, a range of numbers, or a combination of both. For example:

      • 12057494879

      • 12057494879-12057494880

      • 12057494879-12057494880;12057494885

      • 12057494879-12057494880;12057494890-12057494899

Click the OK button to save the changes, the trunk configuration is completed.

In the trunk list, you will see the status displayed as Registered. (For IP-based trunks, it always displays as Registered.)

Now you can follow the article to Configuring Outbound & Inbound Calls.

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