What is SDH and PDH?

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Tags

  1. #transfer
  2. #earlier
  3. #weaknesses
  4. #sector
  5. #useful
  6. #state
  7. #summary
  8. #works
  9. #replaced
  10. #clearly
  11. #different
  12. #various
  13. #parts
  14. #means
  15. #synchronized
  16. #network
  17. #equipment
  18. #telecommunication
  19. #widely