The port on the phone connected to the switch can carry both data and voice traffic. One port is connected to the local network, while the other port can be connected to the PC. Since offices usually have only a single UTP cable to each desk, most of the IP phones today include a small switch that enable you to connect your PC to the phone sitting on the desk, and then connect the phone to the local network.Ĭonsider the backside of an IP telephone Yealink T21:Īs you can see from the picture, this phone has two UTP ports. This means that the phones are connect to the same network and use the same cabling as other network devices, such as workstations or routers. Most corporate networks today use IP telephony.
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