From Voice Video Services Policy STIG
Part of Deficient design: DISN NIPRNet IPVS LSC/MFSS
DISA has developed the DISN IPVS to support C2 Assured Service reliability and availability. As such, the worldwide availability and effectiveness of this service is dependant upon the components of the overall system that are located in each interconnected enclave. These components must be interoperable and support the needed quality of service. Therefore, if the VVoIP system in an enclave is to utilize the DISN IPVS to communicate with other enclaves across the NIPRNet, the system must be designed with equipment that has specific capabilities. Additionally, the implementation of VVoIP across the enclave boundary must not degrade the security or protection of the enclave.
Interview the IAO to confirm compliance with the following requirement: In the event the VVoIP system within the enclave is integrated with the unclassified DISN IPVS network, ensure the system is designed to include one or more DOD APL listed LSCs or a MFSS for call/session control within the enclave. NOTE: The LSC (one or more per site) manages local endpoint registration and calls established to/from local endpoints and facilities. Also manages calls into and out of the enclave. The MFSS (one per site and potentially a backup LSC) performs LSC functions for its site and provides signaling management for a regional set of LSCs. An MFSS is a backbone device and is only required at DISN IPVS PMO designated locations. NOTE: The LSC and MFSS are robust/reliable and provide admission control, and QoS features / capabilities as required by the UCR. NOTE: in the future this requirement may be applicable (with some modification) to the classified DISN IPVS network when the PMO adopts the unclassified DISN IPVS architecture. Determine, through interview and/or physical inspection, the specific make, model, and OS version of the LSCs and/or MFSS.
In the event the VVoIP system within the enclave is integrated with the unclassified or classified DISN IPVS network, ensure the system is designed to include one or more DOD APL listed LSCs or a MFSS for call/session control within the enclave. An MFSS is a backbone device and is only required at DISN IPVS PMO designated locations. APL listed devices and software loads can be found at Access the DoD APL web site at http://jitc.fhu.disa.mil/tssi/apl.html.
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