These are my notes on some BT engineer visits that were scheduled to try and fix my constant broadband drop out. The signal to noise ration would completely drop at random times usually monday to friday and between 09.00 and 17.00 causing the broadband to go off. This is obviously something on our estate but after checking all of our kit and having a look around the small industrial estate for the source of the interference which we could not find, it was time to call BT to try and fix the problem.
First Visit
These notes were told to me by the reins engineer that came out the other day with gary
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Copper pair should be at standard sin349
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612 mw/am is wavelenght bb runs at
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wideband noise
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tester 44b – BT reins checking kit with gain control to help get a direction on the signal
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impulse noise – noise caused by reins interference
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JBSU – tester kit used by BT (the one with the ADSL stuff in it)
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impulse noise cout – scale for checking imuplse
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white band noise (possibly wide band noise)
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AC balance – the ability of the twisted pair to reject/prevent noise. Must test each cable seperately?
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60db is the minimum signal strength for a reins case, ours is 68db. 8Db over the limit. The higher the signal the better the quality fo the line
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impule noise test
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Dside, E side [premesis to box, box to exchange]
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print out graph for engineer and leave on router
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kitz.co.uk is run by a woman !!!
Second visit
gary and laurence
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rf3 filter (small one) but better than normal
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Line Filter 3a , double size filter, a lot more precise, excellent for sorting reins issues
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when the line drops try a quiter line test and see if there is any crackling (use normal handset)
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try a quite line test when the broadband modem is dialing up to se if any crackling
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621AM get a radio and see if there is any interferece at the time of the issue
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put draytek back on so they can see the sync drop. They dont nessasarily see the PPP drop (ie plusnet router)
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the guys tried both of their new filters which both caused crc error