Hongdian H7921/H7920 Basic 3G/4G Router - Manual (Page 123)

H92x 3G/4G Router 7 FAQ
Version (2014-05-28) 7 -89
7.3.5 Antenna Connection
Phenomenon
Cannot connect antenna
Possible Reason
 Antenna type do not match
 Wrong connection
Solution
 Please check antenna interface, should be SMA-J
 Please check antenna type, there are 3G/4G and WIFI, GPS antenna, do not mix them
7.4 Dial Online Problem
7.4.2 Dial discontinue
Phenomenon
H792x 3G/4G Router discontinue during dialing, dial failure
Possible Reason
 SIM card network type do not match
 SIM charges owed
 Power supply do not match
 Modem setting wrong
Solution
 Change to a suitable SIM card
 Recharge SIM card
 Change to suitable power supply
 Change Modem setting, please check related chapter
7.4.3 No Signal
Phenomenon
H792x 3G/4G Router modem status show no signal
Possible Reason
 Antenna connect wrong
 Modem cannot online
 Modem offline