What is e1 in telecom?

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Tags

  1. #calls
  2. #simultaneously
  3. #european
  4. #transmission
  5. #standardization
  6. #telecommunication
  7. #administrations
  8. #voice
  9. #sector
  10. #digital
  11. #named
  12. #offers
  13. #dedicated
  14. #carry
  15. #postal
  16. #conference
  17. #equivalent
  18. #devised
  19. #format