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

The A/B, A/B/C, or A/B/C/D switch within an IP-based VTC system that supports conferences on multiple networks with different classification levels must be based on optical technologies to maintain electrical isolation between the various networks to which it connects.

DISA Rule

SV-259896r1173867_rule

Vulnerability Number

V-259896

Group Title

SRG-VOIP-000160

Rule Version

SRG-VOIP-000160

Severity

CAT II

CCI(s)

CCI-002212 - Defines the solutions in approved configurations to be employed to control the flow of organization-defined information across security domains.
CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

Obtain and install an approved A/B, A/B/C, or A/B/C/D switch.

Check Contents

Review A/B, A/B/C, or A/B/C/D switch vendor documentation to determine if optical technologies are used to maintain electrical isolation between the input port/connection and between all selectable output ports/connections.

If this is not the case, this is a finding.

Validate approved equipment is being used. DISN Video Services (DVS) maintains a list of A/B, A/B/C, or A/B/C/D switches that have been certified to meet the above requirements at https://disa.mil/Services/Network-Services/Video/~/media/Files/DISA/Services/DVS/red_black_peripherals.xls.

If the A/B, A/B/C, or A/B/C/D switch is not on the list, this is a finding.

The A/B, A/B/C, or A/B/C/D switch within an IP-based VTC system that supports conferences on multiple networks with different classification levels must be based on optical technologies to maintain electrical isolation between the various networks to which it connects.

DISA Rule

Vulnerability Number

Group Title

Rule Version

Severity

CCI(s)

Weight

Fix Recommendation

Check Contents

Vulnerability Number

Documentable

Rule Version

Severity Override Guidance

Check Content Reference

Target Key