This Recommendation describes the general functional architecture and characteristics of ATM Network Elements (NE) in terms of specific functional blocks derived from the B-ISDN Protocol Reference Model (PRM) described in Recommendation I.321 and the modelling methodology in Recommendations G.805 and I.326.
The intent of this Recommendation is to enable interoperability between ATM equipment based on the specific requirements described for the functional blocks. The more detailed description of the individual functional elements is given in the companion Recommendation I.732.
Clause 5 provides an overview description of the ATM NE functional blocks in terms of the User Plane, Layer Management and Plane Management functions. The Transfer Functions common to both User and Control Planes are described. The Physical Interfaces required for interoperability between the ATM NEs are defined, with references to the appropriate Recommendations which describe these interfaces in detail.
Clause 6 defines the criteria for the classification of the ATM Equipment Types. Examples of ATM equipment network applications are illustrated in Annex A.
Clause 7 describes the generic performance requirements and Quality of Service (QOS) aspects applicable to ATM Equipment, with reference to the relevant I-Series Recommendations.
Clause 8 outlines timing and synchronization requirements for ATM equipment.