Hongdian H8922 Dual SIM Single Module - Manual (Page 132)

1 Product Introduce H8922 3G/4G Router
1 -96 (2014-05-28)
When a working modem offline, router will run parameter select rule: “check icmp”, check
the IP you set by ping, in this case, 8.8.8.8. after 3 times failure, router will switch to
modem2, and dial online works again.
6.4 VPN
Introduction
VPN, virtual private network, a technology based on Internet, now H8922 3G/4G router
supports L2TP/PPTP/GRE/IPIP/IPSec of VPN.
L2TP used to build a virtual private network, after H8922 3G/4G Router connect to company
NAS server, PC under H8922 could visit company network like visiting the local area network.
Let us check a setting example: