6 Qualifiers

32.1563GPPFixed Mobile Convergence (FMC) model repertoireRelease 17Telecommunication managementTS

This subclause defines the qualifiers applicable for model elements specified in this document, e.g. the IOC (see 5.3.2), the Attribute (see 5.2.1). The possible qualifications are M, O, CM, CO and C. Their meanings are specified in this subclause. This type of qualifier is called Support Qualifier (see supportQualifier of IOC in Table 5.3.2.2-1 and supportQualifier of attribute in Table 5.2.1.1-1).

This subclause also defines the qualifiers applicable to various properties of a model element, e.g. see the IOC properties excepting IOC supportQualifier in Table 5.3.2.2-1 and attributes properties excepting attribute supportQualifier in Table 5.2.1.1-1. The possible qualifications are M, O, CM, CO and " -" . Their meanings are specified in this subclause. This type of qualifier is simply called Qualifier.

Definition of M (Mandatory) qualification:

 The capability (e.g. the Attribute named abc of an IOC named Xyz; the write property of Attribute named abc of an IOC named Xyz; the IOC named Xyz) shall be supported.

Definition of O (Optional) qualification:

 The capability may or may not be supported.

Definition of CM (Conditional-Mandatory) qualification:

 The capability shall be supported under certain conditions, specifically:

– When the qualification is CM, the capability shall have a corresponding constraint defined in the specification. If the specified constraint is met then the capability shall be supported.

 Definition of CO (Conditional-Optional) qualification:

– The capability may be supported under certain conditions, specifically:

– When the qualification is CO, the capability shall have a corresponding constraint defined in the specification. If the specified constraint is met then the capability may be supported.

Definition of C (Conditional) qualification:

– Used for items that has multiple constraints. Each constraint is worded as a condition for one kind of qualification such as M, O or "-". All constraints must be related to the same qualification. Specifically:

– Each item having the support qualifier C shall have the corresponding multiple constraints defined in the IS specification. If the specified constraint is met and is related to mandatory, then the item shall be supported. If the specified constraint is met and is related to optional, then the item may be supported. If the specified constraint is met and is related to "no support", then the item shall not be supported.

NOTE: This qualification should only be used when absolutely necessary, as it is more complex to implement.

Definition of SS (SS Conditional) qualification:

 The capability shall be supported by at least one but not all solutions.

Definition of " -" (no support) qualification:

 The capability shall not be supported.

Note that, in this clause, the term "support" refers to the support of standardized model elements by a specific implementation or instance of an agent. It cannot be assumed that unsupported standardized model elements are known to the agent. How an implementation is expected to treat unsupported standardized model elements is not specified, and the behaviour would likely be same as for other unknown or errant model elements.