basic communication protocol
Basic Communication Services
basic group multiplex equipment
BCAM Basic Communication Access Method
BCS Basic Communication Support
discipline group basic platform
basic communication access method
business communication group
Group Communication
组内/间交流
增钙
下摆
脚口
失效导致安全
组通讯
群通信
组播通信
区段群通讯
组群通信
组通信
群组通信
沟通
间交流
组内
成组通信
群组交互
GROUP COMMUNICATION MODEL
group communication network
group communication security
Group Communication System