This paper proposes a new type of relationship between layers in layered architecture and shows how to concretize the relationship between layers into design constraints. The meaning of layer relationship is explained with examples from design patterns and Microsoft COM. In addition, a prototype tool to check conformance is implemented and the architecture document of an open-source software project is checked against the actual architecture extracted from source code developed by many international developers. As a result of checking, parts that do not conform to the architecture document are investigated and it is pointed out that their modifications should be controlled with caution.

There has been an increasing demand for telecommunication services that satisfy individual users' requirements such as personal telecommunication services and intelligent network services. This demand for advanced telecommunications services is having a great impact on the control architecture and mechanism. In this paper, we propose a new representation of processing power for telecommunications services, using TPS (Transaction Per Second), instead of BHCA, which has been the most commonly used parameter for conventional telephone networks. In developing an IN benchmark, telecommunications services are compared with the TPC-A (Transaction Processing Performance Council-A) benchmark model based on TPS. This benchmark is then used to estimate the requirements for processing power, which, in turn, indicate the necessity for a distributed control. A layered architecture, compatible architecture, and control mechanism for user services are employed to adapt to the distributed network environment.