The ACU-M is a miniature interoperability device built on the proven ACU technology. The Raytheon JPS Communications' device has an intuitive control panel for operation, field diagnostics and programming. Weighing less than 3 pounds, the ACU-M is easily deployed and affordably priced, making it ideal for mission-critical interoperability. The ACU-M provides interoperability between its four audio ports (for radios or other devices), two voice over internet protocol (VoIP) channels, and a headset port. The unit is equipped with a comprehensive suite of digital signal processing (DSP) functions that allow it to competently interconnect radios in any band including HF, VHF, UHF, P25, 800-MHz and Nextel iDEN phones. The DSP function is notably absent from competitive counterparts. An Ethernet port provides access to a network for the VoIP channels and is also used for remote control and feature and firmware upgrades. The enclosure design of the ACU-M offers maximum portability and flexibility to meet the demands of establishing command and control in the field. The unit can be powered by a battery, vehicle +12-volt outlet, or AC power supply provided. It can be installed in a vehicle, rack, or Pelican case. Its water resistant control panel with integrated keys and displays ensures easy programming and field diagnostics. The ACU-M can be controlled locally by its intuitive control panel, speaker, and headset or remotely via its serial or Ethernet ports. Included with each ACU-M is the proven ACU Controller software for control of an individual ACU-M via a CAT-5 cable or over a network.