Communications System means a system or business providing voice, data or video transport, connection, monitoring services or other communications and/or information services (including cable television), through any means or medium.
The date of the check issued in payment or the date of payment by wire transfer through the Treasury Financial Communications System will be considered to be the date payment is made.
In addition, TSP System service shall be provided in accordance with the guidelines set forth in "Telecommunications Service Priority (TSP) System for National Security Emergency Preparedness (NSEP) Service Vendor Handbook, National Communications System (NCS) Handbook" (NCSH 3-1-2) dated July 9, 1990, and "Telecommunications Service Priority (TSP) System for National Security Emergency Preparedness (NSEP) Service User Manual" (NCSM 3-1-1).
It does not include the Voice Encoding Algorithm necessary for complete interoperability with the IRIDIUM Communications System.
It does not include the System Control Segment, Gateways, ISUs, MXUs or other components necessary for complete utilization of the IRIDIUM Communications System.
Mobile Exchange Units (MXUs): The equipment designed to interconnect multiple voice or data channels to the IRIDIUM Communications System using the subscriber unit radio frequency interface to the Space System.