Integrated Services Digital Network (ISDN); Selective Call Forwarding (SCF) supplementary services (unconditional, busy and no reply); Service description
综合业务数字网(ISDN);选择性呼叫转移(SCF)补充业务(无条件、繁忙且无应答);服务描述
发布日期:
1998-10-01
第1阶段补充业务描述:选择性呼叫转移服务(无条件、繁忙和无应答)
Stage 1 description of the supplementary service: Selective call forwarding services (Unconditional, busy and no reply)