Both the SX20 endpoints would be registered to your VCS Expressway, and you would have DNS SRV records for your domain (hicham.com) that point to your Expressway. All incoming external calls would then be routed via the Expressway to connect to either of the two endpoints.
This has been asked many times in the forums, a search pulled up the following for example.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...