MIKROTIK Small weatherproof wireless access point with International LTE modem, LtAP mini LTE kit (RB912R-2nD-LTm&R11e-LTE) - The source for WiFi products at best prices in UK - wifi-stock.co.uk
Mikrotik Tutorial 36 (English) - How to connect a 2G / 3G / 4G USB Modem to the Router - YouTube
Настройка на MikroTik резервного канала через 4G модем