Trunk Groups#
An inbound trunk group combines multiple SIP and PSTN trunks into a single routing configuration. It distributes incoming calls among those trunks and supports failover to backup trunks when a preferred trunk is unavailable.
Fig. 1. Inbound Trunks#
Create a New Trunk Group#
To create an inbound trunk group, follow these steps:
Navigate to the Voice section in the left-hand menu.
Select Inbound Trunks from the submenu.
Click the Create New button and select Trunk Group.
Fig. 2. Creating a new trunk group.#
The Create Inbound Trunk Group page opens. Configure the following settings:
Name - Enter a unique name to identify the trunk group.
Capacity Limit - Optionally specify the maximum number of simultaneous calls allowed for the trunk group. Leave the field set to Unlimited if no restrictions are required. Calls that exceed the limit are rejected.
Trunks - Select one or more inbound trunks to include in the trunk group. Each trunk can belong to only one trunk group.
After completing the configuration, click Create to save the trunk group.
Fig. 3. Creating a new trunk group.#
Edit Trunk Group#
To edit an existing trunk group, follow these steps:
Navigate to the Voice section in the left-hand menu.
Select Inbound Trunks from the submenu.
Locate the trunk group that you want to edit, click the Actions button, and select Edit.
Fig. 4. Actions Button.#
In Edit Inbound Trunk Group, make the required changes and click Submit to save them.
Fig. 5. Editing a trunk group.#
Manage Priority and Weight#
The Priority and Weight settings control how calls are distributed among the trunks in a group.
Priority#
The Priority setting determines the order in which trunks are used for routing calls. Trunks with lower priority numbers are used first. This setting is useful for failover scenarios, ensuring backup trunks are only used when higher-priority trunks are unavailable.
Weight#
The Weight setting distributes call traffic among trunks with the same priority. Trunks with higher weights handle a greater share of calls, enabling effective load balancing.
Adjust Priorities and Weights#
To modify the Priority or Weight settings:
Navigate to the Voice section in the left-hand menu.
Select Inbound Trunks from the submenu.
Locate the trunk group that you want to configure and click the
icon to display its trunks.Locate the trunk that you want to configure, click the Actions button, and select Edit.
Fig. 6. Editing a trunk within a trunk group.#
On the Edit Trunk page, select the Trunk Group tab.
Update the Priority and Weight values as needed.
Click Submit to save the changes.
Note
Use Priority to define the order in which trunks are used, and Weight to balance call traffic among trunks with the same priority.
Fig. 7. Priority and Weight settings for a trunk.#
Delete Trunk Group#
To delete an existing trunk group, follow these steps:
Navigate to the Voice section in the left-hand menu.
Select Inbound Trunks from the submenu.
Locate the trunk group that you want to delete and click the
button.Click Delete.
Fig. 8. Actions Button.#
In the confirmation dialog, choose one of the following options:
Delete Trunk Group only - Removes the trunk group while keeping its associated trunks.
Delete Trunk Group and Trunks - Deletes the trunk group and all trunks included in it.
Warning
If the trunk group is assigned to any DID numbers, you must unassign it before deleting the group.
Click Delete to confirm.
Fig. 9. Deleting a trunk group.#
Additional Information#
Understand how to configure DID numbers with trunks and trunk groups for routing inbound calls.
Create and configure SIP trunks for inbound calls, set transport protocols, authentication, media options, and more.
Access general SIP information, including supported IP addresses, RTP ports, encryption options, codecs, and DTMF transport methods.