Ўзбекистон республикаси олий ва ўрта махсус таълим вазирлиги ўзбекистон алоқа ва ахборотлаштириш

Used at Primary and Secondary Hierarhical Levels (1984, 88, 90).
58. ITU-T Recommendation G.707. Synchronous Digital Hierarhy Bit
Rates (1988, 91,93).
59. ITU-T Recommendation G.708. Network Node Interface for the
Synchronous Digital Hierarchy (1988,91, 93).
60. ITU-T Recommendation G.709. Synchronous Multiplexing
Structure (1988, 91, 93).
61. ITU-T Recommendation G.774. Synchronous Digital Hierarchy
(SDH) Management Information Model for the Network Element View
(1992, 11.96).
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62. ITU-T Recommendation G.781. Structure of Recommendations
on Equipment for the Synchronous Digital Hierarchy (SDH) (1990,
Revised 1.94).
63. ITU-T Recommendation G.782. Types and General
Characteristics of Synchronous Digital Hierarchy (SDH) Equipment
(1990, Revised 1.94).
64. ITU-T Recommendation G.783. Characteristics of Synchronous
Digital Hierarchy (SDH) Multiplexing Equipment. Functional Blocks
(1990, Revised 1.94).
65. ITU-T Recommendation G.784. Synchronous Digital Hierarchy
(SDH) Management (Requirements of Multiplexer Equipment) (1990,
Revised 1.94).
66. ITU-T Recommendation G.957. Optical Interfaces for Equipments
and Systems Relating to the Synchronous Digital Hierarchy (SDH)
(Revised 7.95).
67. ITU-T Recommendation G.958. Digital Line Systems based on the
Synchronous Digital Hierarchy (SDH) for Use on Optical Fibre Cables
(Revised 11.94).
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