Hongdian H7921/H7920 Basic 3G/4G Router - Manual (Page 62)

7 FAQ H792x 3G/4G Router
7 -28 (2014-05-28)
One phone number be set for actions of different modems, but cannot be set as different actions of one
modem.
It’s OK for either SIM of the two SIMs of H792x 3G/4G router to open SMS or voice function, no
matter which slot to be installed.
“Data” will trigger only actions: modem-up/modem2-up/modem-all-up
If “online time” is set as 0, it means router will be always online. To get the router offline, pls choose
actions to trigger offline.
“Online time” in “wake up” will affect other functions like SIM switch, network backup, task
management. So when users set wakeup parameter, please note whether there is conflict with other
factions.
Voice trigger: router will begin the action after 5 seconds of the sound “du”.
5.3.7 DTU configuration
DTU（Data transfer Unit)is to transfer data for meters with RS232 interface from site to center
through 3G/4G network. It support TCP/UDP Client/Server mode.
Step 3 Log-on WEB GUI of H792x 3G/4G routers.
Step 4 Click “Applications > DTU” to open “DTU” tab.
Figure 5-34 DTU configuration