Robustel R1520 User Guide
RT056_UG_R1520_v.1.0.3 Dec. 25, 2021 136/159
Chapter 5 Configuration Examples
5.1 Cellular
5.1.1 Cellular Dial-Up
This section shows you how to configure the primary and backup SIM card for Cellular Dial-up. Connect the router
correctly and insert two SIM, then open the configuration page. Under the homepage menu, click Interface > Link
Manager > Link Manager > General Settings, choose “WWAN1” as the primary link, “WWAN2” as the backup link
and “Cold Backup ”as the backup mode then click “Submit”.
Note: In the cold backup mode, when WWAN1 is the primary link, all data will be selected as WWAN1 for
transmission, and WWAN2 will always be offline as the backup link; when WWAN1 is disconnected, the data will be
switched to WWAN2 for transmission
Click the right most of edit button of WWAN1 to set its parameters according to the current ISP.
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