CTI：Computer Telephone Integration，计算机电话综合技术

DBS: Direct Broadcast Satellite，卫星直播

DWDM: Dense WaveLength Division Multiplex，波长密集型复用技术

MMDS: Multichannel Multipoint Distribution Service，多波段多点分发服务

PCM: Pulse Code Modulation，脉冲编码调制

PSTN:Public Switched Telephone Network，公用交换式电话网

TAPI: Telephony Application Programming Interface，电话应用程序接口

TSAPI: Telephony Services Application Programming Interface，电话服务应用程序接口

WDM: WaveLength Division Multiplex，波分多路复用