帧中继数据传输业务 FRDTS
公用数据传输业务 [计] [通信] public data transmission service
分组交换数据传输业务 [计] packet switched data transmission service
另外，四站点控制器基本操作系统软件支持短数据传输业务(SDTS)。
In addition, the TETRA Site Controller basic operating system software also supports Short Data Transport Service (SDTS).
在电话系统中的一种术语。适用于利用音频段线路的任何非数据传输业务。
In a telephone system, a term applied to any non data transmission that makes use of voice grade lines.
由行政管理部门建立和经营的，借助公用数据网而提供的一种数据传输业务。
A data transmission established and operated by an administration and provided by means of a public data network.
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