Your internet will never break and neither will your bank with TP-Link's VR400 featuring 3G/4G Failover & Fail back - MiRO
DSL-G2452DG Dual Band Wireless AC1200 VDSL2 / ADSL2+ Modem Router with VOIP | D-Link
N300 Wireless VDSL/ADSL Modem Router VD300-Cudy: WiFi, 4G, and 5G Equipments and Solutions
Amazon.com: NETGEAR 4G LTE Broadband Modem - Use LTE as Backup Internet Connection, Unlocked, Works with Any Mobile Network Provider (LB2120) : Electronics
Combine a leased line and a backup ADSL/VDSL line
New DrayTek Cat.6 LTE and VDSL2 35b Security Routers – Vigor2866 LTE Series – i-LAN Technology
DSL-Warehouse
New DrayTek 4G LTE NBN-ready routers with dual SIM card slots – Vigor2620 LTE Series – DrayTek Australia
N300 Wireless VDSL/ADSL Modem Router VD300-Cudy: WiFi, 4G, and 5G Equipments and Solutions
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Amazon.com: NETGEAR 4G LTE Broadband Modem - Use LTE as Backup Internet Connection, Unlocked, Works with Any Mobile Network Provider (LB2120) : Electronics