Ok, I have search mikrotik forum and also google. I am using 3g with USB Huawei modem on roterOS. Is it possible to read signal level even if I am using ppp over 3g modem? The problem is that I can't believe that such option is not implemented. The routers os 20$ can do that but Router OS cannot. Or I can't realize how to do that.
int ppp-client info PPP
working only when usb modem is not used for data