V interfaces at the digital Local Exchange (LE); V5.2 interface for the support of Access Network (AN); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side)
数字本地交换机(LE)的V接口;V5 2.支持接入网(AN)的接口;第4部分:网络层(AN端)抽象测试套件(ATS)和部分协议执行额外测试信息(PIXIT)形式规范
Abstract Test Suite specification (ATS in TTCN) and protocol implementation extra information for testing (PIXIT) proforma V5.2 interface for support of Access Network with up to N interfaces each at 2048 kBit/s with concentration capability within the Access Network