DIN EN 300324-8:2001 数字局域交换的V接口.支持存取网络的V5.1接口.第8部分:数据链路层用抽象试验成套试验装置(ATS)和部分实施试验协议附加信息(PIXIT)格式规范
V-interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 8: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the data link