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 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。
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