Hello. wanted to ask me what that looks like with the FREI intercom. If I chose the BT (A3 SB) system, why did the friendly asked me when ordering my phone. When I said that I would own the T630 he said that it would have a very long order time. I should buy a 6310 cheap at Ebay. What now? My T630 has BT why do I need another now? Can one explain the system to me. Thanks Gruss Lexy