My company uses tons of these and they work well. Simple to set up and pretty reliable. We do occasionally have out of the box failures of the dongles that go at the station end of the cable.

Simply put, it is a fancy PoE injector that lets you use PoE and about 5Mbps max of bandwidth over a single pair of Cat3, so great for replacing digital single pair systems with IP sets, provided you aren't planning to daisy chain workstations with them.

They aren't cheap but they do the job and do save our customers a lot of money on recabling if that isn't in the budget.

Tennessee Technology Solutions, LLC | "Business technology solutions reimagined." | (423) 665-9995 | www.423tech.com