EN 300 324-4 : 3.1.1

V INTERFACES AT THE DIGITAL LOCAL EXCHANGE (LE) V5.1 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)

European Telecommunications Standards Institute