I am looking for some guidance on setting up an ATA and 3CX for use as a VoiceMail system. I have an existing Mitel SX2000 phone system (UK based) that has 4 analogue extensions configured as feeds into an old Talking Duplex voicemail system. I want to repalce the Talking Duplex box with something new (3CX). I understand that I will need sme sort of 4 port ATA. I have installed and configured 3CX and have borrowed a single port ATA (ATA-1100). From an analogue telephone handset plugged into the ATA I can dial into the 3CX system OK but I am unable to dial into the ATA from the PBX - the ATA treats the call as a PBX call, switches modes and just passes the call thru to the analogue handset. Can anyone advise on a suitable 4 port ATA that will meet my needs please? It will need to be compatible with the UK telephone system. Thanks in advance.