scope:

The present document provides the Protocol Implementation Conformance Statement (PICS) proforma for the "Services and Protocols for Advanced Networks (SPAN); Loop Emulation Service (LES) using AAL2" defined in EG 201 900-1 [1], in compliance with the relevant requirements, and in accordance with the relevant guidance given in ISO/IEC 9646-7 [4] and ETS 300 406 [2].

It allows either the Network Operator to formulate the requirements for the LES implemented in a Customer Premises Interworking Function (CP-IWF) or a Central Office Interworking Function (CO-IWF), or to decide whether an implementation meets these requirements. It details in tabular form the implementation options, i.e. the optional functions additional to those that are mandatory to implement.