Has anyone successfully connected an OmniPro to a PBX in lieu of a traditional POTS line? I don't have POTS at home and my house phones are on a PBX (Cisco CUCME) using a SIP provider. I connected the OmniPro (Green and Red terminals) to an FXS port (Cisco ATA186) and the panel can dial out via PBX to my cell phone for alarms. However, I am not able to call into the panel from a house phone (on the same PBX). I think this is becase the FXS does not send digits on the analog side so the panel never sees the "#" it's looking for to respond. I am thinking to try an FXO port where I can send the digits but FXO does not provide loop voltage so unless the OmniPro panel can provide voltage, that will not work. I suppose it's possible to use an FXO and a voltage injector but wondering if there's another way. Hoping someone out there got this working with a PBX?