Hongdian H8922 Dual SIM Single Module - Manual (Page 140)

1 Product Introduce H8922 3G/4G Router
1 -104 (2014-05-28)
Possible Reason
Modem compress protocol do not match with server end
Solution
Change compress protocol setting
7.3 VPN Problem
7.3.1 VPDN cannot connect
Phenomenon
VPDN cannot connect
Possible Reason
 VPDN port work abnormal
 VPDN parameter wrong
 VPDN peer server abnormal
Solution
 Make sure Modem is online
 Set the correct port to VPDN
 VPDN parameter wrong
 Check VPDN peer server
7.3.2 VPN cannot communicate
Phenomenon
VPN already connect, but cannot communicate
Possible Reason
 Router table config wrong
 VPN peer server config wrong
Solution
 Add related Router table
 Check VPN peer server setting
7.3.3 Router can communicate but subnet cannot
Phenomenon
Router can communicate but subnet cannot