ITU-T X.123-1996
在过渡期间应用E.164/X.121编号方案互通的转义码与TOA/NPI间的映射 系列X
Mapping between Escape Codes and TOA/NPI for E.164/X.121 Numbering Plan Interworking During the Transition Period - Series X: Data Networks and Open System Communication; Public Data Networks - Network Aspects Study Group 7; 10 pp