This box lets you forward incoming landline calls to another number. It connects to an ethernet port and a phone port which lets you send incoming calls over voip to your cell phone. We used it in the Stanford housing so that calls from visitors that come from the call box are forwarded to our cell phones so that we can let people in even if we are not home. It was super useful, but we are moving out now so it needs a home.

I'm also including a phone cable splitter port, although I'm not 100% sure it works.