STIGQter STIGQter: STIG Summary: Enterprise Voice, Video, and Messaging Policy Security Requirements Guide Version: 1 Release: 4 Benchmark Date: 05 Jan 2026:

The Enterprise Voice, Video, and Messaging system connecting with a DISN IPVS must be configured to signal with a backup Multifunction Soft Switch (MFSS) (or SS) if the primary cannot be reached.

DISA Rule

SV-259937r948784_rule

Vulnerability Number

V-259937

Group Title

SRG-VOIP-000570

Rule Version

SRG-VOIP-000570

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

If the Enterprise Voice, Video, and Messaging system connects to the DISN WAN for VVoIP transport between enclaves AND the system is intended to provide assured service communications to any level of command control (C2) user (Special-C2, C2, C2(R)), ensure each enclave containing one or more LSCs is assigned to, associated with, or serviced by two DISN IPVS core backbone systems as follows:
- For DISN NIPRNet IPVS, each enclave will be serviced by at least one primary and one secondary (backup) MFSS.
- For DISN SIPRNet IPVS, each enclave will be serviced by at least one primary and one secondary SS at the SIPRNet tier 0 routers.

Check Contents

Inspect the configurations of the LSC(s) to determine compliance with the requirement.

If the LSC(s) are not configured to signal with a backup MFSS (or SS) in the event the primary cannot be reached, this is a finding.

Vulnerability Number

V-259937

Documentable

False

Rule Version

SRG-VOIP-000570

Severity Override Guidance

Inspect the configurations of the LSC(s) to determine compliance with the requirement.

If the LSC(s) are not configured to signal with a backup MFSS (or SS) in the event the primary cannot be reached, this is a finding.

Check Content Reference

M

Target Key

5585