缩位拨号(Abbreviated Dialing) ......................................................... 帐目码(Account Code) .................................................................. 闹钟(Alarm) ................................................................................. 文字显示(Alphanumeric Display)......................................................... 模拟通信接口(ACI)(Analogue Communications Interface) ..................... 话务台电话排队(Attendant Call Queuing) ............................................. 自动呼叫分配(ACD)(Automatic Call