5.6 Firmware Upgrade.................................................................................................................................. 124
5.9 Logs and Diagnostics...............................................................................................................................129
5.10 SNMP Application Example..................................................................................................................130
5.11 LAN Management................................................................................................................................. 133
5.12 Network Connection............................................................................................................................ 134
5.12.1 Cellular Connection................................................................................................................... 134
5.13.1 Dual SIM Backup........................................................................................................................138
5.13.2 WAN Failover............................................................................................................................. 141
5.14.1 AP Mode.................................................................................................................................... 145
5.14.2 Client Mode............................................................................................................................... 146
5.15 VRRP Application Example...................................................................................................................147
5.18 NAT Application Example..................................................................................................................... 156
5.20 QoS Application Example..................................................................................................................... 158
5.21 DTU Application Example.....................................................................................................................159
5.22 PPTP Application Example................................................................................................................... 162
UR52 & UR55 User Guide
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