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Across
  1. 6. case in which framing pulses mark the boundary between packets
  2. 8. lower speed non-sonet streams below STS-1 rate are mapped
  3. 12. used to manage all the transmission facilities in the central office
  4. 13. generic framing procedure
  5. 15. path protection
Down
  1. 1. SDH uses for the accommodation of lower- speed of non-SDH signals
  2. 2. error monitoring in SDH
  3. 3. virtual concatenation
  4. 4. by which switches have relatively poor throughput
  5. 5. asynchronous digital hierarchy
  6. 7. packet destination information from header
  7. 9. one of the functions of router
  8. 10. process of aligning two signal streams in time
  9. 11. optical networks that capable of providing packet switched service at the optical layer
  10. 14. connection verification