GrandstreamNetworks GSC3516 Sip/multicast Talk-back Speaker 15w Speaker

Works with FreePBX just fine. I was able to hook up 3 and talk to both single and broadcast in 2-way communication like a conference call. My biggest gripe is Grandstream not having a barrel jack or better yet a 12V wiring seat for power, it has to be PoE. It's wireless, so why the need to add UL rated ethernet cabling and a single injector into the mix? It saves cost for them, not the clients.Feature request:If GS reads these, you gave us 2pin wiring seat for the key switch, please give us a 12V/2.5A wiring seat option for the power too. We could rig PoE+, warts, whatever need be for the clients. We could even be able to run 12V from a controller board where it's usually operated from if wall mounted. Running a single PoE injector is quite awkward. If able to get power requirement down further it could run off of USB 5V power, but then again they are loud speakers so that might be a pipe dream.