I connected my wAPR-2nD with Quectel EP06-E Cat 6 mPCIe LTE modem (taped pins 23, 25, 31, 33 to get the board to recognize the modem) and it works with PPP.
Then I go: /port firmware set ignore-directip-modem=no
and: /system serial-terminal usb1 channel=2
(usb1 is my port from: /port print
and data channel for modem is 3, info channel is 2
from PPP status and having checked mikrotik queltec modem wiki page)
to send the following command to the modem:
and I reboot to get LTE interface.
I get about 10-15Mbps download where my Cat6 phone gets 40Mbps...