Synchronous Digital Hierarchy

Target entity: Synchronous Digital Hierarchy
Context triple: [SONET, compatibleWith, Synchronous Digital Hierarchy]

• A. SONET
  SONET (Synchronous Optical Network) is a standardized digital communication protocol used to transmit large volumes of data over optical fiber in high-speed telecommunications networks.
• B. Signaling System No. 7
  Signaling System No. 7 is a global telecommunications signaling protocol suite used to set up and manage telephone calls and other services across digital networks.
• C. ITU-T G.826 series
  The ITU-T G.826 series is a set of international telecommunications standards that define performance and synchronization requirements for digital networks, particularly for timing and packet-based transport.
• D. ISDN
  ISDN (Integrated Services Digital Network) is a set of communication standards for digital transmission of voice, video, and data over traditional telephone networks.
• E. synchronous Ethernet
  Synchronous Ethernet is a telecommunications technology that extends traditional Ethernet by adding precise frequency synchronization capabilities for carrier-grade transport networks.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Synchronous Digital Hierarchy
Target entity description: Synchronous Digital Hierarchy (SDH) is an international standard for high-speed fiber-optic telecommunications that provides a flexible, synchronous framework for transporting digital signals in public and private networks.

• A. SONET
  SONET (Synchronous Optical Network) is a standardized digital communication protocol used to transmit large volumes of data over optical fiber in high-speed telecommunications networks.
• B. Signaling System No. 7
  Signaling System No. 7 is a global telecommunications signaling protocol suite used to set up and manage telephone calls and other services across digital networks.
• C. ITU-T G.826 series
  The ITU-T G.826 series is a set of international telecommunications standards that define performance and synchronization requirements for digital networks, particularly for timing and packet-based transport.
• D. ISDN
  ISDN (Integrated Services Digital Network) is a set of communication standards for digital transmission of voice, video, and data over traditional telephone networks.
• E. synchronous Ethernet
  Synchronous Ethernet is a telecommunications technology that extends traditional Ethernet by adding precise frequency synchronization capabilities for carrier-grade transport networks.
• F. None of above. chosen