Page | 27
Aeroqual AQM60 User Guide
2. Click Network Settings
GSM GPRS Settings
select GPRS
Submit and then Back
3. Click Serial Port Settings
Port 1
4. Click Operation Mode
select Application “Socket”
Submit and then Back
5. Click Communication Port
Set as per window below and submit and Save/Restart
3.3.2. IP address solutions using GPRS Systems
GPRS is a communication technology that allows data acquisition systems to overcome the difficulty of
cabling for wide area remote sites. GPRS applications are becoming more prevalent, but the dynamic IP
address issues associated with GPRS networking continue to frustrate system integrators.
The trouble with I/O devices with GPRS capability is that they receive a different IP address every time they
connect to the GPRS network.
Three distinct solutions have been developed to overcome this challenge:
Solution 1: Public Static IP Address
The first choice is to obtain a public static IP address; some carriers (telecom service providers) can assign a
static IP address to a specific SIM card. This way, all the I/O devices will have their own static IP address.
The main benefit of this solution is that it behaves like a wired solution. However, not all carriers offer this
kind of service.
Solution 2: VPN Service Provided by Carrier/MVNO
A VPN (Virtual Private Network) is a secure LAN solution that groups specific devices together. The VPN
grouping concept solves the dynamic IP address issues and prevents unauthorized persons from accessing
the data. For this VPN solution, customers are required to buy one of a number of different GPRS on-line
services to be able to access a Virtual Private Network (VPN). When the GPRS device dials up, the carrier
will assign a private IP address which is on the same network segment as the host and can maintain bi-
directional communication using a polling architecture. Many enterprise clients turn to mobile virtual network
operators (MVNO). These MVNO’s acquire numerous GPRS services and then rents them out to customers
who are looking for a small number of IP addresses.
Unfortunately, some countries do not have MVNOs, and some carriers do not provide VPN services. For this
reason, this solution may be unfeasible for some users.
Aeroqual has used www.wyless.com successfully to communicate with AQM instruments.
Summary of Contents for AQM60
Page 1: ...Aeroqual AQM60 User Guide ...