Description of Above-Baseline Physical Threats to Telecommunications Links
|Publication Date:||1 September 2015|
This standard describes and defines above-baseline physical threats to telecommunications links. It does not provide mitigating measures against stresses resulting from the threats. However, this standard does serve as a foundation to build specifications for concrete mitigating measures as needs arise. Such measures depend on specific stresses and are developed on a case-by-case basis. Because these are above-baseline threats, the stresses, application, and methodology to mitigate them shall be negotiated by the service requester with each individual carrier. The basis for application of above-baseline standards to specific telecommunications links will depend on the service requesters' needs for economical mitigation, as the service requesters will be responsible for costs in excess of baseline mitigation measures.
The threats characterized here are beyond those described in ATIS-0600328. The threats, however, may occur, but not in all locations. How and when they occur depends on geography, natural forces, and man-made forces. The nature of these above-baseline threats is unpredictable. As such, they can only be characterized in terms of probabilities or be based on worst-case historical occurrence. The above-baseline threats in this standard are believed to be at the upper limit of reasonable probability, but have some chance of being exceeded in extraordinary circumstances. Threats from terrorism and war are not specifically considered in this standard but may in effect overlap with certain threats that are considered (e.g., nearby blast effects from construction activities).
The purpose of the standard is to provide a common understanding of the nature of above-baseline physical threats that can place stress on telecommunications links. This common understanding will provide a basis for discussion and planning, to both providers and users of telecommunications links, when developing protection measures over and above those generally applied by service providers.