The organization must provide a long-term alternate power supply for the Voice Video system capable of maintaining DISN Voice Precedence level Flash Override/Flash/Immediate/Priority users and fire and emergency services (FES) communications capability in the event of an extended loss of the primary power source.

From Voice Video Policy Security Technical Implementation Guide

Part of SRG-POL-200092

Associated with: CCI-000961

VVSP-01-000110_rule The organization must provide a long-term alternate power supply for the Voice Video system capable of maintaining DISN Voice Precedence level Flash Override/Flash/Immediate/Priority users and fire and emergency services (FES) communications capability in the event of an extended loss of the primary power source.

Vulnerability discussion

Power systems rely on multiple tiers of defense for providing continuous power to sites and systems. Commercial power may be supplemented by uninterruptible power systems (UPS), generators, or other means. Power must be distributed to the network infrastructure, endpoints, servers, and other network devices to ensure constant delivery of services. Voice Video systems must be designed and implemented to ensure FES are always available. Providing an alternative power source requires the use of a secondary commercial power supply or other external power supply. Long-term alternate power supplies for the information system can be activated manually or automatically.Voice Video endpoint users require different levels of capability depending on DISN Voice Precedence needs. Flash/Flash Override users must have eight hours of continuous backup power at all times. Immediate/Priority users must have two hours of continuous backup power. Routine and lower users do not require backup power, except to provide necessary FES. The UPS must provide power for the LAN infrastructure, WAN boundary, Voice Video infrastructure, and Voice Video endpoints.

Check content

Review the Voice Video system security plan (SSP) for design criteria for the physical environment of the Voice Video system. Ensure a long-term alternate power supply for the Voice Video system capable of maintaining DISN Voice Precedence level Flash Override/Flash/Immediate/Priority users and FES communications capability in the event of an extended loss of the primary power source. Suitable long-term alternate power supply includes secondary commercial power supply, generator, or other external power supply. When secondary commercial power supplies are used, best practice is to have power come into the facility or campus by a geographically diverse route. If the organization does not provide a long-term alternate power supply for the Voice Video system capable of maintaining DISN Voice Precedence level Flash Override/Flash/Immediate/Priority users and FES communications capability in the event of an extended loss of the primary power source, this is a finding.

Fix text

Develop and document in the Voice Video SSP the design criteria for the physical environment of the Voice Video system. The organization must provide a long-term alternate power supply for the Voice Video system capable of maintaining DISN Voice Precedence level Flash Override/Flash/Immediate/Priority users and FES communications capability in the event of an extended loss of the primary power source. Suitable long-term alternate power supply includes secondary commercial power supply, generator, or other external power supply. When secondary commercial power supplies are used, best practice is to have power come into the facility or campus by a geographically diverse route.

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