Whereas traditional systems require the use of one or two dedicated channels per user every time there is a two-way communications, trunked systems automatically select the voice channel that a user may talk on every time he transmits.

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When entering a shop, should the user take off their headphones to talk to a sales assistant?

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The idea came to him as he was preparing to give a talk at a conference on user experience in Web design.

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All of these systems, whether trunked or conventional, are push-to-talk, meaning that only one user can speak or listen at one time.

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Be thoughtful not only about all of the stuff we talk about openly (design, business model, user interaction, hiring, and culture) but also be thoughtful about this stuff too.

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But your product and user experience needs to be in a good place before you start thinking of how to talk about it.

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