Alignment, testing and maintenance principles in the Intelsat TDMA/DSI network
Abstract
Functional groupings used to systematically evaluate and maintain the Intelsat TDMA/DSI network are studied. A description of the control hierarchy in a TDMA system and functional layers of the traffic and reference stations is given. For the alignment, testing, and maintenance (A, T and M) procedure to be performed, functional groupings are formed out of categories of functions to be tested and the groupings are evaluated individually while TDMA network traffic continues. Examples of self-testing and peer testing, as well as A, T and M elements and functional groupings are presented. Functional groupings and their necessary supporting external function are contained in A, T and M reference configurations. These configurations reflect the involvement, time-ordering, and hierarchy of the A, T and M functional groups. Reference configurations for the TDMA protocol layer test, the baseband contrived loop test, and the in-service transmission layer test are given.
- Publication:
-
International Journal of Satellite Communications
- Pub Date:
- June 1985
- Bibcode:
- 1985IJSC....3..161O
- Keywords:
-
- Communication Networks;
- Digital Systems;
- Electronic Equipment Tests;
- Intelsat Satellites;
- Maintenance;
- Time Division Multiple Access;
- Alignment;
- Functional Design Specifications;
- Network Control;
- Protocol (Computers);
- Self Tests;
- Communications and Radar