1. Navigate to Firewall | Rules.
2. Click on the Floating tab.
3. Click on the second Add button to add a rule to the end of the list.
4. When the Edit page loads, select Match in the Action drop-down menu:

5. Select WAN in the Interface list.
6. Keep Direction set to any.
7. In the Protocol drop-down menu, select UDP.
8. Set Destination Port Range to 5198 to 5199.

9. You may enter a brief description in the Description text field:

10. Click on the Display Advanced button, which will reveal additional settings, some of which we must configure.
11. Scroll down to Ackqueue/Queue. Select qACK in the Ackqueue drop-down menu, and qVoIP in the Queue drop-down menu.

12. Click on the Save button when done.
13. To save time, we will create a rule for TCP traffic by copying the original rule. Click on the Copy icon for the newly created rule.
14. Change the Protocol to TCP.
15. Change the Destination Port Range to 6000.
16. Modify the Description, if desired.
17. Change the Queue to qOthersDefault.
18. When done, click on the Save button.
19. Click on the Apply Changes button to reload the firewall rules.