FAQ

How to setup my TR321-M connection on LTE Cat-M1 NB-IoT network 
Normally your TR321-M device will automatic detect and attach the Cat-M1 NB-IoT network. If wait for a long while and still not setup the connection. Please following the below steps checking.
1) Please use the Firmware version higher than 21.1.1.34 for your TR321-M. Ask Bivocom technical support to get latest firmware, and do a full reset after upgrade the firmware.
2) Use the “3G” protocol to dial up the Cat-M1 network, which setting on Setup>>WAN>>Protocol. And input necessary APN and PIN code if SIM card requested.
3) You are allowed to telnet to the TR321-M device via telnet 192.168.1.1 as default, and command “send_at_cmd /dev/ttyUSB2 AT+COPS?” to check the result. The responds would like “+COPS: 0,0,"460 01",7” , .

The latest explanation for last number is,
0 User-specified GSM access technology
1 GSM compact
3 GSM EGPRS
7 User-specified LTE M1 A GB access technology 9 User-specified LTE NB S1 access technolog.
How to configure the Relay of TG451 on Web UI
For the configuration of relay, please go to TG451 WebUI>>Advanced>>DI DO to manually test it. you should hear a “click” when Close the relay.
What is the definition of DI and DO on TG451
Regarding the relay and DI, Bivocom TG451 support control the DI and DO (relay) ports from server following Modbus RTU protocol. For DI, we use 02 function code to read its status, while use 06 function code for DO/Relay control. The below table shows the corresponding command and responds,
Can I remote reboot the router via SMS
Yes, you can reboot the router by sending SMS: "reboot,<password>" , and you'll receive SMS from router: start to reboot, that means router reboot successfully.
Where can I can configure IP address and port of server to TD210?
1. First of all, go to our website to download the config tool of TD210

2. Open the config tool, then go to DTU Config, and then go to Network Setting, and you will find that you can configure up to 5 data center's sever IP and port.
How many digital input/output and analog input on TD210
There are 5 I/O interface in total, which supports 3 digital input or output(3.3V), and 2 analog input(4-20mA), we can customize analog input up to 3, if you have other requirement, please contact us at sales@bivocom.com
Are your routers based on OpenWRT or DD WRT?
Bivocom routers and gateway are designed based on OpenWRT with our own kernel, support LUA and Python environment, which means your engineers can write their own applications based on LUA, Python, and install the applications to our routers and gateways.
What types of VPN protocol supported by your routers?
The BIVOCOM TR321, TR341 Router series and TG451 series gateway support PPTP, L2TP, IPSEC, OpenVPN, and you can go to web UI of router to configure.
How can I manage routers remotely
Bivocom routers and gateway support Remote Management platform which allow you configure the IP address and port of remote server, device number and phone number of router, etc., as below.

1) Remote Manage
You can enable or disable this function to choose if you want to remote manage the router or not.

2) Server Address
Type the specified login server address you want to remote mange the router, it can be either an IP address or Domain Name.

3) Server Port
The specified login server port.

4) Heartbeat Interval
The heartbeat time interval (Unit: second)

5) Device Number
Device ID of router.

6) Device Phone Number
The phone number of SIM card insert in router.

7) Device Type
Type of the device, default is router.

8) Remote Upgrade
Click ‘Enable’ to enable remote firmware upgrade function.

9) Server Address
Type the server IP address or Domain Name for remote upgrade.

10) Server Port
Type the server port for remote upgrade.

11) Firmware Version
Type the firmware version that you want to upgrade remotely.
FAQs of IP Modem
1) ‘Power’ light is inoperative
Make sure the power supply is ranging 5-35V, and polarity is correct.

2) Couldn’t connect DTU to server
Make sure SIM card is the card holder and locked correctly, and antenna is fasten.
1.Check the IP address and port of server in the configuration tool is correct. 2.Check whether the server is working.
3.Check if the SIM is out of service(charges owed) and function of data is on.

3) The device couldn’t enter into configuration mode.
1.Check the connection of RS232/RS485 is correct.
2.Is the RS232/RS485 connected to your computer or laptop and serial port of computer or laptop is working.
3.Check whether the baud rate of computer or laptop is the same as DTU.
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