Connect to LTE with AT commands

Hello!
I have Mikrotik RBM33g and MiniPCI-e LTE modem with ZTE chip.
When my modem is connected to Mikrotik, a ppp connection appears. When you try to configure the usual manual does not turn on the radio.
Is it possible to connect to LTE in Mikrotik OS using AT commands?
When working in Windows using AT commands, everything works in NDIS mode and in phone call mode.