"Mobile devices are now as essential to workplaces as copy machines and coffee makers. That means a fast, reliable wireless network is essential as well. But building one isn’t as simple as plugging in your ISP-supplied router and connecting your smartphone. In fact if you’ve never done it before, putting together a Wi-Fi network robust enough to support your business can be pretty tricky. To shorten the learning curve, we’ve highlighted some common pitfalls and how to avoid them. "