Defense Red Switch Network

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A Multi Line Phone (MLP-1A) manufactured by Electrospace Systems which has been part of the Defense Red Switch Network since 1983. The phone has four extra keys for multilevel precedence and preemption (MLPP) and 48 programmable keys for connections over secure and non-secure lines.

The Defense Red Switch Network ( DRSN ) is a dedicated telephone network that provides globally secure communication services for the command structures of the armed forces of the United States . The network is managed by the Defense Information Systems Agency (DISA), it is released for information to the classification level Top Secret SCI.

The DRSN provides tiered, privileged, secure voice communications and voice conferencing for the National Command Authority (NCA, comprised of the President and Secretary of Defense of the United States), the Joint Chiefs of Staff , the National Military Command Center (NMCC), the Commanders of the Unified Combatant Commands and their command centers, other US Department of Defense agencies, government agencies and NATO allies ready.

US Department of Defense and Government entities may gain access to the network with the permission of the Chiefs of Staff. After this approval, DISA will provide the service together with the customer and appropriate military facilities.

The Defense Red Switch Network consists of four subsystems: the switching system, the transmission subsystem, the timing and synchronization subsystem and the network management subsystem. The switching system consists of RED and BLACK switching to implement a separation according to the RED / BLACK concept . End users can thus be provided with access to both secure and non-secure networks with one device.

Before September 11, 2001, the DRSN processed approx. 15,000 calls per day - after that the peak was 45,000 calls per day, the average in 2003 was approx. 25,000 calls per day. During this time, the Defense Red Switched Network was expanded to support 18 additional homeland security initiatives.

Nowadays the network is also known as Multilevel Secure Voice . It is the core component of the Global Secure Voice System (GSVS) during peace, crisis, and conventional war, when hosting national conferences, and for establishing connections that require both tactical and strategic communication networks.

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Individual evidence

  1. ↑ Detailed pictures of the Electrospace MLP-1A ( Memento from December 18, 2013 in the Internet Archive )
  2. ↑ Details are in the Chairman of the Joint Chiefs of Staff Instruction (CJCSI) 6215.01 (September 23, 2001).
  3. ↑ DISA Europe: Voice Services
  4. ↑ Jane's Defense: Description of the Defense Red Switch Network (DRSN)
  5. ↑ DISA: Multilevel Secure Voice service .