scope:

General

The attention of Administrations is drawn to the benefits which can be derived from basing assessments of the service availability performance of international leased circuits on internationally agreed practices. Adoption of common practices assists international cooperation in identifying and clearing service difficulties, allows Administrations to compare performance results, and enables Administrations to present a common approach in discussions with customers.

To this end, this Recommendation offers guidance to Administrations on assessing the service availability of international leased circuits¹⁾ on the performance figures which may be used in such assessments and the method of deriving such performance figures.

Where appropriate, the terms and definitions given in Recommendation E.800 [1] and in Supplement No. 6 to Fascicle II.3[2] have been used in this Recommendation.

¹⁾ In this Recommendation only full-time, point-to-point international leased circuits (as defined in Recommendation M.1010 and specified in Recommendations M.1020, M.1025 and M.1040) are considered. The service availability performance of part-time, wide-band, multi-terminal, tec. international leased circuits requires further study.