How to configure the network of R20A-2?

Hello,

The network of R20A-2 needs to be distributed by C313W-2, so please set it up in the boot-up guidance of C313W-2.

1. Go to Device > Working Mode, and select Master.

2. Choose the number of the slave device.

Then the device will search the MAC of the slave device automatically to distribute the network for the slave network.  

How to choose the number of the slave device in the monitor?
I’ve followed all the guides and I can’t access to the R20a, I have connected the two cables and I can’t reach the R20a from the 313w-2.
When you say choose the number of the slave device where I can find it?
Thanks.

In the monitor finally appears R20a as slave. But I can’t access to the IP to finalize the configuration and for the monitor if I add the IP manually tell me that the connection failed.
Which are the next step to enable the R20a, one data more if push the call button in the R20a sounds as busy line and never stabling the call.
Thanks.