With 60 junction lines, the telephonecommunicationsystem will operate by virtual exchange. The Exhibition Hall is equipped with IC telephones.
电话通讯系统采用虚拟交换局方式,中继线60条,展馆内外采用ic卡。
2
Some systems, like the telephonesystem, use a network of cables, wires, and switching stations for point-to-point communication.
有些系统,如电话系统,使用由电缆、导线和交换台组成的网络,来进行点对点的通信。
3
Carries on the installment instruction to the customer, the telephonecommunication trouble clearing, the UPS power supply system the installation and trial run.