To ensure that VoIP traffic in a contact center is not impacted by performance issues after deploying an access control policy on a Cisco Secure Firewall Threat Defense (FTD) device, the engineer should configure the access control rule with the " trust " action. The " trust " action allows traffic to bypass inspection and policy enforcement, ensuring that critical VoIP traffic is not delayed or degraded.

Steps:

In FMC, navigate toPolicies > Access Control > Access Control Policy.

Create a new rule or edit an existing rule.

Set the source and destination for the VoIP traffic.

Set the action to " trust " to ensure the VoIP traffic is not inspected.

By configuring the rule with the " trust " action, the VoIP traffic will be prioritized, maintaining the quality and performance required for the contact center operations.