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--- networking:hdb3 [14/03/2020 02:02] – created - external edit 127.0.0.1
+++ networking:hdb3 [22/09/2025 14:07] (current) – andrew
@@ Line 15: / Line 15: @@
 The receiver removes all Violation pulses, but in addition a violation preceded by two zeros and a pulse is treated as the "BOOV" pattern and both the viloation and balancing pulse are removed from the receieved bit stream. This restores the original bit stream.
+This is sometimes wrongly referred to as encryption, it is NOT! It is a form of scrambling, there is no key and of you know the protocol, anyone can "decode" the bit sequence.
 ===== Summary of HDB3 encoding rules =====
@@ Line 51: / Line 53: @@
 Lifted from:-
-Gorry Fairhurst - email:G.Fairhurst@eng.abdn.ac.uk - Date: 08/01/2002 EG3557
+Gorry Fairhurst - email:G.Fairhurst at eng.abdn.ac.uk - Date: 08/01/2002 EG3557
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