[Asterisk-Users] T1 Sync clarification

Stephen J. Wilcox steve at telecomplete.co.uk
Tue Jan 13 15:09:37 MST 2004


> What are the practical effects with in-correct clock sync
> -like to you hear odd buzzing, or dropped voice or gaps of audio ??

You may get gaps where frames are discarded, this will be across all timeslots 
so an individual loss isnt a lot of data, you'll probably get away with the odd 
one but if you get too many and the T1 realigns it could restart and you could 
see the whole T1 go down and up..

Not sure how this works in the US with such diversity available but in the UK 
telcos generally derive sync from another one so most of them are on the same 
clock source..

Steve




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