IT Baseline Protection Manual S 5.1 Removal, or short-circuiting and grounding, of unneeded lines
S 5.1 Removal, or short-circuiting and grounding, of unneeded lines
Initiation responsibility: Head of Site/Bldg Technical Service
Implementation responsibility: Administrator; Site/Bldg Technical Service
It is advisable to remove unnecessary lines. If this is not feasible due to the resulting disruption of operations (opening of ceilings, window-sill and floor ducts), the following measures are useful:
marking those lines which are not needed in the review documentation and deleting the entries in the documentation kept in the distributor;
opening of all strap connections and crosscuts of free lines in the distributors (to the extent possible);
short-circuiting the free lines at both cable ends and in all affected distributors;
grounding of free lines (ground connection) at both cable ends and in all affected distributors. If this causes ground-induced ripple pickup, single-end grounding will be sufficient;
ensuring that lines no longer needed will be removed when other relevant work is carried out.
Additional controls:
Who decides on the need for lines and on the required reserves?
Who verifies proper short-circuiting and grounding?
