Testing the Modem and SIM
1- Insert a SIM card into the modem. This should be a normal SIM card which includes texts, not a data SIM card.
2- Connect the modem to a computer USB port via the USB-Mini USB lead supplied.
3- Connect the modem to the supplied antenna and place the antenna in an elevated position.
4- Connect the power to the modem – the Power LED should be green. The Status LED should flash green and then come on solidly.
5- If you don’t have a terminal program installed download Tera Term Free from https://download.cnet.com/Tera-Term/3000-2094_4-75766675.html
6- Run Tera Term and connect to the COM Port. In settings set Serial Port to 115200
7- Type AT&V and look at the +IPR: line.
- If it says 115200 -> type AT+IPR=9600 then AT&W
If there isn’t a +IPR line on AT&V -> type AT+IPR?
- If it is 115200 -> type AT+IPR=9600 then AT&W
8- Change the Tera Term Serial Port Settings to 9600 and restart the modem.
9- When it restarts type AT+IPR? and you should get 9600.
10- Type AT^SMONI {return} and you should get something like this:
The first number shows whether you are connected to 4G. If you are connected to 2G or 3G try moving the antenna to a better location. When on 4G the 13th number is the signal strength, in this case -103. Acceptable levels are between -75 and -120dBm for 4G.
You can Google AT^SMONI for what all of the numbers mean, but the last word should say CONN, which means that it is registered onto the network.
11- Type AT+CSCA? You should get the message back like this +CSCS: +447802092035 which is the SMS message centre number which you will need later in Step 4 of Section 2. Note it down.
12- To send a test SMS type AT+CMGF=1 and press Enter.
13- Type AT+CMGS=“<phone number>” and press Enter. Use international number with a + at the beginning, such as “+447836123456”. Make sure you use the “ “
14- The terminal will automatically move to the next line, which starts with a >. Type your message on the right of the >.
15- Enter Ctrl + Z to deliver the message.
16- You should get a +CMGS: nnn response, where nnn is a number.
17- Close Tera Term or any other terminal program you are running and disconnect the USB from the computer.
Connecting the Modem to the Davicom Cortex
1- Plug the USB cable from the modem into one of the Davicom Cortex’s USB ports.
2- Connect your computer to the Davicom Cortex and log in using admin or higher.
3- Go to Devices > Pagers & SMS and click on the first available checkbox.
4- Enter a Description and the SMS message Centre number from Step 11 of Section 1 above and then press save.
5- Go to Devices > USB Modem.
6- You should see something like this:
7- Click on the checkbox and the edit icon.
8- On the Descriptions tab name the modem Robustel 4G Modem or something to suit.
9- On the Actions tab make sure it looks like this.
10- Test the signal strength. It should be higher than -93 dBm
11- Click OK and enter a phone number in international format such as +447836123456 and select the pager number of your SMS Centre number.
12- Press Send Test SMS.
13- After a few seconds you should get a dialogue box and receive a text on the mobile phone.
14- Go to System > Alarm Call Lists and enter the details like this.
15- Press Update, Save and Exit.
16- Now try raising a Major Alarm and not acknowledging it. The Davicom Cortex should send a text.
Thank you to Alan Brown from Radica for this article.
