The M3-SE-MFGW is a low power, high capability Radio Over IP (RoIP) voice crossbanding & gateway module for the Cubic | DTECH Labs M3-SE product family. Based on popular Cubic | Vocality software, the M3-SE-MFGW module provides the ability to crossband up to eight (8) separate radio voice networks. It is compatible with any tactical radio or LMR system that supports analog E&M signaling. The M3-SE-MFGW is also capable of extending single radio networks by bridging voice traffic over an existing data network. Two 1Gbps ethernet interfaces allow for WAN and LAN network segmentation. A removable 4G/LTE cellular radio provides additional WAN uplink capability. The system is also able to operate directly off PoE provided by another network device, extending the functional range of the system. A power passthrough connection allows direct mounting to existing M3-SE product family devices with no need for additional power supplies or external power cabling. The tough aluminum chassis is engineered to support reliable operations even under shock and vibration prone environments such as those found in vehicle mounted applications.