ASD ISM 1646 Detail cabling paths and points on floor plans
What it says
Floor plan diagrams contain the following: - cable paths (including ingress and egress points between floors) - cable reticulation system and conduit paths - floor concentration boxes - wall outlet boxes - network cabinets.
Quoted as published. Everything else on this page is written by Control Stack.
What it means
In plain EnglishFloor plans should show cable paths, conduit systems, and key network component locations.
Imagine trying to find a lost set of keys in a cluttered room. Having a detailed floor plan showing where all your cables and network equipment are is like making sure that room is tidy with everything in its place. Without this, it could take ages to fix problems or set up new equipment, leading to business interruptions and potential security risks.
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Why it matters
Inaccurate cabling maps can delay fault isolation, prolong outages, increase repair costs, and hide unauthorised taps or changes to cable ingress/egress points and cabinets.
How to implement
IT Manager: Create a detailed map of your office's current cabling layout.
Start by walking around the office, noting where all the cables run and using this information to draw an accurate floor plan that marks all important points like network cabinets and wall outlets.
Facilities Manager: Work with an architect or engineer to include conduit systems in the floor plan.
Ensure they map out where cables can safely run through walls and between floors, making it clear on the plan for future installations or repairs.
IT Team: Identify and mark all ingress and egress points for cables on your floor plans.
This means showing clearly where cables come into and exit each floor, allowing for easier troubleshooting and rerouting if necessary.
Facilities Maintenance: Regularly update the floor plan as changes are made.
When any new cable is installed or moved, update the plan immediately so it accurately reflects the current setup and prevents confusion later.
Office Manager: Keep copies of the floor plans in multiple places.
Ensure that one copy is stored digitally in a secure drive and a printed version is kept in an office manual so that anyone can easily access them when needed.
Keep it running
Update floor plans after each cabling change; record cable paths, ingress/egress points, conduit routes, floor concentration boxes, outlets and network cabinets to support rapid fault-finding.
Evidence and audit
- Check 1 of 4What an auditor asks for
Ask for
The current floor plan documents: Request the latest version of the office floor plans.
Look at
Whether they include detailed information about cable paths and network components.
Good evidence
Floor plan will show clear paths for cables and marked locations for all network boxes and cabinets.
- Check 2 of 4What an auditor asks for
Good evidence
Will include up-to-date conduit maps showing precise locations throughout the facility.
- Check 3 of 4What an auditor asks for
Ask for
Maintenance records of floor plans.
Look at
Records that show the floor plans are reviewed and updated regularly. Good records will list changes made, date of updates, and authorisation from a responsible person.
- Check 4 of 4What an auditor asks for
Ask for
A walk-through demonstration: Request a physical walk-through guided by the floor plan. Compare plan details to actual cabling layouts.
Good evidence
Outcome sees all cable paths and network components matching exactly with the documented plans.
Mappings
Closest match in ISO/IEC 27001: A.7.12, Secure cabling for power and data, which this control supports.
ISO/IEC 27001: 1 mapping
This control supports A.7.12.
ISM-1646 requires floor plan diagrams to record cable paths (including ingress and egress points between floors), reticulation and conduit paths, floor concentration boxes, wall outlet boxes and network cabinets. This documentation supports Annex A 7.12 by showing exactly where cabling runs and where it is exposed, so protection against interception, interference or damage can be applied and inspected. Annex A 7.12 requires the protection itself, while ISM-1646 only requires the cabling to be documented.
Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.