business management layer (FCAPS) (BML)
The International Telecommunication Union(ITU) has standardized a layer model forISO network management ofTelecommunication Control Networks( TMN) under M.3010: Fault, Configuration, Account, Performance, and Security( FCAPS). This layer model consists of five layers, the lowest of which is the Network Element Layer( NEL), and the highest of which is the Business Management Layer (BML).
The Business Management Layer is where the entire business management of an enterprise is managed. This ranges from return on assets( ROI), market share, employee costs, taxes and many other business data. It is all about defining the company's goals and how to achieve them.