EXFO FTB-8500 Series for FTB-500 - Manual (Page 168)

Port Tabs
154 FTB-8500 Series and FTB-8120NGE/8130NGE
Advanced Auto-Neg. TX
Note: Only None is available for BERT analyzer test.
Note: Flow Control should be set to None with Half Duplex mode.
Local Link Partner Description
Asym. Asym. & Sym. Local: Only the TX Pause is enabled.
L. P.: Only the RX pause is enabled. Backpressure is only
performed on the L. P. side.
Sym. Sym. On both sides the RX and TX pause is enabled.
Backpressure is performed on both sides.
Sym. Asym. & Sym. On both sides the RX and TX pause is enabled.
Backpressure is performed on both sides.
Asym. & Sym. Asym. Local: Only the RX pause is enabled. Backpressure is
only performed on the local side.
L. P.: Only the TX pause is enabled.
Asym. & Sym. Sym. On both sides the RX and TX pause is enabled.
Backpressure is performed on both sides.
Asym. & Sym. Asym. & Sym. On both sides the RX and TX pause is enabled.
Backpressure is performed on both sides.