ADVANCED SIGNALLING AND SUPERVISION.
Final rept. 14 Mar 66-14 Aug 67,
RADIO CORP OF AMERICA CAMDEN NJ COMMUNICATIONS SYSTEMS DIV
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Signalling and supervision SS is that area of communications which relates to control, management and connection of subscribers in a switched communications network. The objective of the study was to develop new and advanced signalling and supervision techniques and a related routingnumbering plan for use in future Air Force communications systems. A hypothetical system model was postulated to test the numbering plan, the routing plan and the signalling and supervision techniques developed. An all digital SS technique has been developed using in-band techniques for non-data calls, modified out-band techniques for analog including voice calls, and a combination of orthogonal, maximum length code characters and ASCII characters for the actual SS information. The SS techniques offer an evolutionary step in communications, is directed at digital processor switch technology and can be reasonably implemented with simple digital logic circuitry and programming. It offers possibilities in monitoring channel quality both during and between connected calls. Within the limits of encryption problems as included in the study, the SS methods afford compatibility with educated estimates on the encryption philosophy of the 70s. A routing technique which uses network management information for forwarding calls through the network has been developed. This is based on using key nodes for network management information. Another technique, using a combination of nondeterministic and learned adaptive directory routing is also discussed. Author
- Command, Control and Communications Systems