Hi I am new to the 3cx scene and I am having a bit of confusion and hope someone can help. What I got is a POTS system and looking to connect my 2 analog line to a 3cx system i was looking at the support page and got kinda lost. I have sip phones and my 3cx system installed but i am lacking the gateway i guess. I was looking at LinkSys SPA-3102 for my needs to get analog to my network. Is this what I need cause I start googling and I find cheap 54 dollars one but not sure what I am looking for. Any tips on this?