Avoiding synchronization problems in SDH networks

Avoiding synchronization problems in SDH networks pdf

Network synchronization is a fundamental issue facing installers and maintainers of SDH
equipment. Increasingly complex SDH networks have placed even greater demands on network-wide synchronization, where transmission quality is directly related to the accuracy and performance of network timing.
A timing hierarchy where the primary reference clock (master clock) is poorly distributed to network elements (NEs) lower down the hierarchy can seriously impact network performance. At best, there may be an increase in pointer activity resulting in increased tributary jitter as pointer hits filter down through the network. At worst, excessive pointer activity may lead to the corruption or even loss of payload data.
This application note describes the key measurements required to ensure network synchronization is maintained and discusses the reasons for performing them.

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Tips for timepass at Office

If you find it very boring in the office, here are some tips:

1. Form a detective agency to find out who is quitting next.
2. Make blank calls to your Boss.
3. Send mails from lotus notes (outlook) to your internet mail (and immediately get to the internet and see who reaches first, you or your mail?) and read them there, and note down the time they take to reach
there. Then do vice versa……. …… !!
4. Rearrange the furniture, i.e. flick someone else's chair just to irritate him/her.
5. Count your fingers (and toes if you still get bored).
6. Watch other people changing their facial ex-pressions while working and try changing your ex-pressions also.
7. Try to stretch status meetings as longer as possible, just by asking silly doubts.
8. Make faces at strangers in office.
9. Have a two hour lunch; it's a big social occasion.
10. Learn to whistle.
11. Revise last week's newspaper.
12. Hold "How fast my computer boots" competitions.
13. Practice aiming the coffee cup into the dustbin.
14. Enhence your Literature skills. you can author "1001 innovative ways to waste your day" to help your collegues
15. Pick up phone and dial non-existing nos.
16. Have work breaks in between tea.
17. Count maximum no of applications your computer can open at time.
18. For Win NT/95 users….Move things to Recycle bin and restore them..Then repeat this process.
19. Look at someone & try to imagine how (s)he might have looked when (s)he was 5 years old.
20. Make full use of the comfortable chair and table provided and take a nap.

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