ITU-T X.29-1997
在分组装/拆(PAD)设施和分组型DTE或另一PAD之间交换控制信息和用户数据的规程 系列X
Procedures for the Exchange of Control Information and User Data between a Packet Assembly/Disassembly (PAD) Facility and a Packet Mode DTE or Another Pad - Series X: Data Networks and Open System Communication; Public Data Networks - Interfaces Study Gro