scope:

This Recommendation describes line test components and how they are used to complete line tests. The definition of line test components, rather than of complete line tests, allows the media gateway controller (MGC) and media gateway (MG) to implement a minimal set of signals and packages to achieve a larger set of line tests. It is assumed that the media gateway controller is responsible for sequencing and timing of the line test components to complete the relevant line tests. The detailing of results that are reported (e.g., events and statistics), as well as the timing and mechanisms used for transmitting such records from the MG to the MGC, are outside the scope of this Recommendation.