If you understand the fundamental objectives of your organization and how your telecommunication network assists you to achieve these objectives you will have a sound basis for the development of network security. The types of potential interruption must also be understood remembering that small, intermittent failures can be worse than complete collapse. Risk exposures can be prioritized and contingency plans established. Duplicated carrier communications, private network triangulation, and virtual private networks are considered as well as ISDN and switched backup services. The consolidation of discrete services to make switching to alternative sites much easier is also suggested.
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