Tactical Networking Systems is a portfolio of core baseband networking hardware and software configured as a family of services that facilitates end-user services requirements of multiple security enclaves for Marine Air-Ground Task Force (MAGTF) tactical communications networks. The portfolio comprises the Tactical Data Network (TDN) Data Distribution System-Modular (DDS-M) Core, and Expansion modules; the Digital Technical Control (DTC); and the Tactical Voice Switching System (TVSS), formerly Transition Switch Module (TSM). The DDS-M is the fourth generation product within the TDN family of systems, replacing all preceding legacy systems. The modular packaging of the TDN DDS-M provides a ‘take what the mission needs’ employment concept within the MAGTF. The TDN DDS-M provides the backbone data communications infrastructure to the MAGTF Commander in the form of an integrated data network. TDN DDS-M provides the capability to authenticate users and equipment, send and receive electronic mail, share and store files, perform required Information Assurance (IA) functions, and transparently route and switch digital messages between the Local Area Network (LAN), circuit switch, and Tactical Wideband Networking Radios sub networks. The DTC supports MAGTF command and control communications mission objectives by providing circuit switching/multiplexing, transmission multiplexing, network management, electronic data security, and manual patching capability for deployed Marine forces. Employed at the Major Subordinate Command (MSC) and Marine Expeditionary Force (MEF) Headquarters, the DTC is the primary communications hub for the interface between deployed, Joint, Coalition and MAGTF Command, Control, Communications, and Computers (C4) nodes, terrestrial and satellite systems, and the Defense Information Support Network (DISN). The DTC integrates Commercial Off-the-Shelf/Government Off-the-Shelf (COTS/GOTS) equipment within a mobile S280 tactical shelter transportable via a Government Furnished Equipment (GFE) vehicle when fielded. The TVSS is a modular Integrated Services Digital Network (ISDN) circuit switch capable system that combines multiplexing, transmission encryption, group modem, and Uninterruptable Power Supply (UPS) capabilities in one system. The TVSS system serves three purposes: 1) replace legacy switching equipment; 2) provide switching connectivity internal to the MAGTF; and 3) provide switching connectivity to joint, coalition, and host nation telephone networks. TVSS consists of three functional suites: (1) the Deployable End Office Suite (DEOS); (2) the Remote Subscriber Access Module (RSAM); and (3) the Deployable Integrated Transport System (DITS).
TDN DDS-M provides its subscribers with basic data transfer and switching services; access to strategic, supporting establishment, joint, and other service component tactical data networks; network management capabilities; and value-added services such as message handling, directory services, file sharing, and terminal emulation support. It will provide IP connectivity for tactical data systems and the Defense Message System.
DTC provides the resources for the technical controller to exercise effective operational control over the communications links, trunks, and groups within a deployed Marine Corps network. DTC is located at the Marine Force Component, MEFs, MSC Headquarters C2 nodes. Within a MAGTF node, the DTC can connect to multiple transmission systems such as satellite systems, multi-channel systems, single channel radio systems, and cable. From the MEF user’s perspective, the DTC provides the multiplexing and link management of four general categories of information. The DTC manages voice/circuit switches, data switches, and dedicated circuits.
TVSS is employed at all levels of the MAGTF to effect voice and limited data switching capability. The modular design allows units to implement the system according to the mission needs. The equipment is operated and maintained by MSC, Marine Expeditionary Unit, Marine Expeditionary Brigade, and MEF communications personnel. The number of TVSS packages deployed to a theater will be commensurate with the size of the operation/contingency. The TVSS equipment has been fielded to all levels of the MAGTF.