①呼叫等待(CW:Call Waiting)
②呼叫保持(HOLD)
③对忙用户的呼叫完成(CCBS:Completion of Calls to Busy Subscribers) (4)多方通信类补充业务
①会议呼叫(CONF:Conference Calling)
②三方通信(3PTY:Three Party Service) (5)社团性补充业务
①封闭用户群(CUG:Closed User Group)
②多级优先(MLPP:Multi Level Procedence and Preemption) (6)计费类补充业务
①信用卡呼叫(CRED)
②收费通知(ADC:Advice of Charge) (7)附加的信息传递业务
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综合业务数字网（ISDN）-ISDN的业务