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