Last but not least we need two IP phones. In the second version we’ll change this to a 3560 type switch, which provides Power over Ethernet (PoE) – this will eliminate the need of many cables. The simplest solution is to use a Catalyst 2960 switch, but in this case we need to use separate power adapters to every phone. Another important device is a switch to connect the end devices to. The heart of the VoIP system is a router with an IOS containing the Call Manager Express (CME), which will control the calls, as the name implies. Let’s begin with the necessary devices which are available in Packet Tracer (PT). Click here to download Packet Tracer files for this lab
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