This Recommendation describes the physical plane of the IN architecture for CS-1. The physical plane identifies different Physical Entities (PEs), the allocation of functional entities to PEs, and the interfaces between the PEs.
The status of the text in this Recommendation is stable and there are no outstanding issues identified for further study.
Companion Recommendations include the Q.1200- and Q.1210-Series of Recommendations, especially that of Recommendation Q.1205, which describes the physical plane for general IN. The revisions that appear in the current text of this Recommendation were applied to make it consistent with the companion Recommendations.