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DP83TC811EVM: DP83TC811EVM - PHY interface

Part Number: DP83TC811EVM
Other Parts Discussed in Thread: DP83822I, DP83TD510E

 Hello,

This is my issue : I can't get any communication between 2 DP83TC811EVM boards connecting in twisted pair (20cm long on the bench) and 2 SunSet MTT (Ethernet controller / analyzer - datacom tester - Sunrise Telecom) plugged on RJ45 of the 2 boards DP83TC811EVM. See pics in attached. 

Is this configuration correct using these 2 boards & Eth analyzers ?

Can you provide me a diagram (app mostly  used) with application note ? How to connect these 2 boards together to establish communication with 2 PC plugged on the RJ45? The Goal is to replace the Eth cable with an existing twisted pair on my project, using the 2 DP83TC811EVM boards both side + PC (Eth), Is it Possible ?

Is impedance resistor 100 ohm needed on this 20cm twisted link ?

The  2 DP83TC811EVM boards configuration are under default values from the guide snlu231 with external power. Boards Led 's Power are on, RJ45 led's are on when RJ45 analyzers are plugged. Analyzers does not received anything (zero). RX/TX on analyzers is correct (100Mbps) when the 2 RJ45 links are connected directly each other on a simple Eth switch.  

Is there any software configuration to be modify using these boards that way ?

Many thank

Fab