Sometimes there’s no need for a desk phone, but a user insists on having a handset form factor. These devices connect to a user’s PC via USB but provide the familiar user interface and look and feel of a traditional phone handset. From the PC’s perspective, the handset is just another audio device for Lync Communicator. However, for the user, the handset is a familiar tool that works the same way as the legacy phone they’re used to. This can be a great tool to begin the process of empowering nontechnical users with UC. The Plantronics Calisto 540 shown in Figure 33.6 is a good example.