4 Stage 2 — Single failures analysis

Describe telecom service networks and analyse vulnerabilities of components.

In this stage you will create a telecom service diagram for each telecom service, and assess the vulnerabilities on each of its components. This will give you a good understanding of the inner workings of each telecom service, and a first impression of its risks.

The result will be recorded in the Raster tool: telecom service diagrams and assessment of Frequency and Impact on vulnerabilities of diagram components.

The Single Failures Analysis stage consists of the following steps:

  1. Update the checklists of vulnerabilities
  2. Draw initial diagrams
  3. Analyse the vulnerabilities of components (assess frequency and impact)
  4. Expand unknown links
  5. Review