Two-Four Wire ConversionHybrid Balanced with Echo Cancellation
Tx
Rx
EC
H
B
-
+
+
H
B
Tx
Rx
EC
-
+
+
NT
LE
B - Hybrid Balanced Impedance
EC- Echo Canceler
H - Hybrid
Rx - Receiver
Tx - Transmitter
O - Subtractor
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