VVoIP services over wireless IP networks must apply the Wireless STIG to the wireless service and endpoints.

The incorporation of wireless technology into the VVoIP environment elevates many existing VVoIP concerns such as quality of service (QoS), network capacity, provisioning, architecture and security. Many government entities use mobile communication solutions that include wireless VVoIP and Unified Communications (UC) applications to meet critical needs for interoperability and flexibility. Smartphone vendors integrate Wi-Fi, Bluetooth, and mobile radio that transitions seamlessly for VVoIP and UC apps. Using these capabilities over wireless technologies presents vulnerabilities to the communications carried and the VVoIP infrastructure. Confidentiality is one of the greatest concerns requiring encryption of the media and signaling. This encryption is in addition to the WLAN encryption required by the Wireless STIG and the endpoints must authenticate to the WLAN before being granted access. Another great concern for using wireless VVoIP communications services is reliability and availability when using the technology for critical C2 communications. Initiated calls could be blocked at either the transmitting end or the receiving end. This could be because the spectrum or channels could be busy/overloaded, unavailable, or deliberately jammed by an adversary. As such, VVoIP services should not be relied upon for C2 communications.