Glossary Definition for Synchronous Digital Hierarchy

Definition

Synchronous Digital Hierarchy, SDH: The ITU-TSS International standard for transmitting information over optical fiber.

Synonyms

• SDH

Keywords

SDH, SONET, OC-3, OC-12, OC-48, OC-128, STM-1, STM-3, STM-12

Related Parts

• DS33M30 - Ethernet Over SONET/SDH Mapper
• DS33M33 - Ethernet Over SONET/SDH Mapper
• DS33M31 - Ethernet Over SONET/SDH Mapper

See Also

• ITU
• Plesiochronous Digital Hierarchy
• SONET
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