HP JG447A MSR 4 Port FXO HMIM Module HP MSR 4 Port FXO HMIM Module, provide 4 FXO ports is used to connect to PBX or key system or to provide off-premises connections to PSTN. It is compatible with HP MSR4000 router Series. Phone cable is used as a connectivity media. Information technology professionals rely on HP quality to ensure maximum productivity. As the power of applications, processors, memory adapters and storage devices increases, high-end computer users are seeking ways to optimize their system performance. HP provides leading solutions, adding new levels of performance, availability, flexibility and management. Box Contains 1x HMIM Module