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2.6 BML
Business Management Layer

[M.3010] The BML has responsibility for the total enterprise and is the layer at which agreements between operators are made {major co-operation framework contracts}.
This layer normally carries out goal setting tasks
{policy} rather than goal achievement but can become the focal point for action in cases where executive action is called for {management intervention}.  This layer is part of the overall management of the enterprise and many interactions are necessary with other management systems.

In short:  Manage the enterprise.  It does not contain business operations, but manages them (i.e. the business operations –e.g. dealing with normal contracts– are carried out at SML level).

Typical responsibilities are:  market and technology strategies, service demand predictions, tariff definitions, control of service types, decisions to introduce new services or to phase-out old services/­equipment, checking the profitability of services, costs of resources, etc.

The BML seems not to be subject to ITU standardisation, but is required for reference.  Views, managed objects and operations are not supplied here.

Note that several TMN vendors provide Business Management Systems (BMS), Business Support Systems (BSS) or Business Operations Systems (BOS), but these are not in the BML according to the LLA;  they manage/­support the daily tasks of the (telecom) business, and are therefore at the Service Management Layer (SML).

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