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• USING THE DSN

USING THE DSN

This section is designed to familiarize the user with the various functions and capabilities of the DSN and to provide the guidance required to use the DSN effectively. The information is presented in a logical order geared toward first-time users. As with any tutorial, navigation buttons are provided on each web page to guide the user through the information. Experienced users may randomly select topics from the links below or from the left menu bar.

• User Categories - an explanation of the various types of DSN users.
  
  
• Area Codes - an explanation of the DSN's unique area codes.
  
  
• How to Make a Call - the various types of DSN calls and step-by-step instructions for making them.
  
  
• Toll Free Calls - how to dial commerical toll free calls from the DSN.
  
  
• Secure Calls - securing transmissions with a STU-III/STE device.
  
  
• Precedence Levels - explains each level of precedence in the NCS Voice Precedence System.
  
  
• Signal Tones and Recordings - examples of various tones and recorded announcements that the user may encounter when making a DSN call.
  
  
• Dial-up Video - what is Dial-up Video and how to use it.
  
  
• Trouble Reporting - how to report telephone trouble or unsatisfactory service.

The DSN is provided as a primary non-secure means of communication between DoD Services, Agencies, and Components.

"The DSN system is used only for official business or in the interest of the government and is the first choice for all switched voice and dialup video telecommunications between DoD user locations...

"DSN is the official DoD switched voice network and will be the preferred communications means for special C2, C2, and non-C2 user. It is the primary means of secure (STU-III/STE family) communications for non-tactical C2 users. DSN must be the user's first choice; however, if DSN is not immediately available, or if the called party does not have access to DSN service, other long-distance calling methods may be used."

-- CJCSI 6215.01B, Policy for DoD Voice Networks
23 September 2001

Accordingly, the use of public telephones and cell phones is only permissible when a DSN connection cannot be made.