eTung ER-800, Руководство пользователя

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ER-800 User Manual
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After configuring router and DTU at the far end, both dial up into the APN
network, and DTU connects to the embedded data center running in the router;
then we can receive data from the serial device at the far end via the router’s
user serial port, and at the same time device at the front end can send data to
the device at the far end via the router’s user serial port. Pay attention, the
front-end device broadcast data to all the far-end devices, so there should be
identity in the data packets sent/received between front-end and far-end
devices to distinguish from/to whom the packets are received/sent.
Solution 2: mServer Connects the Router and with APN Network
For large-scale projects with lots of terminals, this solution: mServer connects the
router and with APN network can be used. As shown in the figure below, eTung’s
wireless router dials into operator’s APN network, and the data center at the back
end connects to the router with Ethernet cable; at the same time configure DMZ
host on the router, then terminals at the far end dial into the same APN network and
can connect to the data center at the back end. Compared to solution 1, this
solution can also be easily deployed and cost-efficient; at the same time since the
data center is running in a dedicated server, compared to embedded data center
solution, it allows more terminals to connect to the data center, and there can be
more flexible configurations, for example, map a virtual serial port for each
terminal, make point-to-point mapping between two terminals, etc.
Figure Appendix 3-8: mServer connects to the router and with APN network
Below we will illustrate how to deploy this solution, and use MD-609G as an
example for terminals at the far end.
First of all, please order APN SIM cards from operator, and parameters include APN
name, PPP username and password, and for the SIM card used by the router there
should be a static IP address assigned as well.
1. Install and run mServer in the data center server
Ask eTung for mServer installer, and install mServer according the user manual.
Make sure the firewall software allows accessing mServer from outside.