Or you might use long-distance communication lines, telephone lines, located close to the external data unit information.
或者你可能使用远程通讯线、电话线、接近位于外部数据单元的信息。
A telephone unit which is with touch-keys to substitute the dialing board. It can be used as a simplest data communication device.
一种用按键代替拨号盘的电话机，可作为最简单的数据通信设备。
A mobile communication network (5) transmits a packet call establishment response signal to the mobile telephone unit (1) and thereafter transmits a packet data.
移动体通信网(5)向便携电话机(1)发送分组呼叫确立应答信号，之后发送分组数据。
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