Hi, I'm brand new to 3CX but do know networking and have installed a few PAP ata devices. I have a customer who needs 16 extensions. Can one purchase one (1) phone service from VOIP provider and enable 16 extension phones? The office building is already networked with lan rj45 and rj11 wall jacks. So, connected to each rj11 phone wall jack would be an analog phone. In utility room where rj11's terminate at punchdown block I would connect (with pigtail, or?) an ATA (linksys PAP2t device). Then into a 16 port switch and then to server with 3CX installed. Is this a doable setup? Customer does not want to pay for IP phones. Or do I need to purchase separate services for each extension? Budget issues. Thanks EDIT: I don't believe I can get away with (1) one VOIP account and 16 extensions. And, with the linksys PAP ata device. I can I get 2 phone lines on one ATA device?