ETSI EG 201 900-2-2001 高级网络的业务和协议(SPAN).ATM上的窄带业务.应用AAL2的环路仿真业务(LES).第2部分:协议实现一致性声明(PICS)形式规范(版本1.1.1)
Services and Protocols for Advanced Networks (SPAN); Narrowband Services over ATM; Loop Emulation Service (LES) Using AAL2; Part 2: Protocol Implementation Conformance Statement (PICS) Proforma Specification