GB/T 17904.2-1999 ISDN user-network interface data link layer specification and conformance testing method Part 2:Data link layer protocol conformance testing method
GB/T 7611-2001 Characteristics of the electrical interface at hierarchical bit rate for digital network
ITU Data architecture of one software system Study Group 17*, 2007-02-01 Update
YD/T 1055-2000 The test method for full-rate ADSL system with Pots splitter