ISM-0558 · September 2026
Internet Protocol phones in public areas
Guidelines for communications systems / Video conferencing and Internet Protocol telephony / Internet Protocol phones in public areas
Official control wording
IP phones used in public areas do not have the ability to access data networks, voicemail and directory services.
Applicability
These are ASD’s applicability markings. Select and tailor controls for your system’s risk, classification and operating context with the system owner and authorising officer.
Implementation guidance
This control is included as official reference material. We have not published a reviewed Kubernetes implementation mapping for it. Browse the 23 guides with bounded public mappings.
Official source
ASD’s ISM OSCAL v2026.09.4 · Original catalogue JSON · Pinned checksums and edition details
Control source identifier: ism-0558. Check the official release before relying on this snapshot for an assessment.
Official control wording and applicability: Australian Signals Directorate, © Commonwealth of Australia 2026. September 2026 ISM, OSCAL v2026.09.4, reproduced under CC BY 4.0. Formatting is adapted for this website.
Latticework Systems’ implementation guidance is our interpretation. Provenance and scope.