Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Functional capabilities and information flows
综合业务数字网(ISDN);封闭用户组(CUG)补充业务;功能能力和信息流
发布日期:
1992-05-01
第2阶段ISDN谅解备忘录中优先1和2服务的说明
Stage 2 descriptions for priority 1 and 2 services covered in the MoU on ISDN