What are the Advantages of SDH?

Advantages of SDH:-

• Worldwide standard
• First standard for bitrates higher than 45/140 Mbps
• Standardised optical interfaces
  simple coding of the electrical signal into the line signal (scrambling)
  Integration of multiplexer and line equipment
• Huge overhead capacity for error monitoring and for management purposes (TMN)
• Direct access to tributary channels
• Only small buffers required --> small group delay figures
•  Provides concept for clock/synchronization, protection switching etc.
•  Suitable as the physical layer of ATM networks