What causes queuing delay?

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Tags

1. #intermediate
2. #component
3. #queueing
4. #caused
5. #switch
6. #telecommunication
7. #queuing
8. #network
9. #switches
10. #receiver
11. #delays
12. #servicing
13. #computer
14. #until
15. #originating
16. #executed
17. #waits
18. #engineering
19. #queue
20. #delay