IT Baseline Protection Manual - The Information Warfare Site

Safeguard Catalogue Infrastucture Remarks
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S 1.21 Sufficient dimensioning of lines
Initiation responsibility: Network planner; Head of Site/Bldg
Technical Service; Head of IT Section
Implementation responsibility: Site/Bldg Technical Service
Sufficient dimensions must be specified for cable runs (e.g. floor ducts,
window-sill ducts, raceways, pipe ducts in outside areas) so that, there will be
sufficient scope for required extensions to the network. However to prevent
cross-talk (mutual interference of cables), it may be advisable to provide for
minimum spacing of cables.
If, for various reasons, it is not possible to provide routes with sufficient reserves
right away, attention should at least be given to providing for any
required extensions to be realised as regards routing. With regard to the design
of wall breaches and ceiling breaches, this will obviate subsequent measures
entailing high levels of noise, pollution and costs.
This measure can be replaced by the selection of other types of cables (S 2.20
Monitoring of existing lines and S 5.3 Selection of cables types suited in terms
of communication technology). As compared to many small cables, use of a
small number of multicore cables can save space. Cross-talk can be prevented
by using shielded cables or fibre optics.
Additional controls:
- Has consideration been given to saving space and to preventing cross-talk
by selecting other types of cables?
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IT-Baseline Protection Manual: Oktober 2000