封: close; seal交换: exchange; swap; interchange; ...式: type; style分封交换式公众数据通讯: packet switching public information c电话式数据通信网: telephone type data network多兆比交换式数据业务: switching multi-megabit data service高速交换式数据服务: smds数据通信交换机: data communication exchanger; dce data communication exchange数据通信交换码字符: data link escape character开式数据通路: od open data path; odp open data path分封交换式资料网路: packet-switched data-transmission service数据通信: data communication and processing; data communications; data traffic; datacom; dc data communication; oem数据通信码: data-link escape数据通信盘: data communication数据通信器: data phone; dataphone数据通信网: dcn data communication network数据通信站: data communication station交换式数字视频: switched digital video sdv交换式数字图像: sdv (swiched digital video); swiched digital video分封交换数据网络: network packet switched data; network, packet switched data (psdn); packet switched data network psdn; packet switching data network交换式通信网: switched communication network线路切换式数据网: csdn circuit switched data network单向数据通信: one way data communication电子数据通信: electronic data communication; electronic data interchange (edi)独立数据通信: independent data communication