Tiger TMS iCharge is ‘middleware’ software that has a PBX functionality interface to a Micros Opera PMS. Tiger TMS iCharge operates between a Micros Opera PMS and telephone systems, voice mail, high speed internet, iConnect (POS), iPGS (Guest Services), BMS systems and Niagara. To all these services and systems, Tiger TMS iCharge presents an FIAS emulation interface. We are aware that such an interface has been successfully tested with the Micros driver. However, because the Tiger TMS iCharge emulation presents PBX functionality it only supports Guest Check-in and Guest Check-out.