- interleaving = packet manipulation
- quite line test = 17070
- 'Copperline Test' can only be done form the line rental supplier and can provide a more extensive line test
- BT can guess if router/filter straight into master socket by checking impedance of the line. not 100% reliable
- when you are plugged in to the master socket and you ring BT they will do an automatic profile reset.
- according to the BT woman, BT can detect wheather you are plugged in to the test socket
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DSL / Broadband