Use and Care Manual
Table Of Contents
- Contents
- 1. Introduction and Hardware Overview
- 2. Get Started
- 3. Manage the Modem LAN Settings
- 4. Manage the Mobile Broadband Connection
- 5. Secure Your Network
- Change the Modem Password
- Manage Port Forwarding for Incoming Traffic
- Manage Port Filtering for Outgoing Traffic
- Block Specific Services and Applications From Accessing the Internet and Allow All Other Services and Applications
- Allow Specific Services and Applications to Access the Internet and Block All Other Services and Applications
- View Services and Applications on the Blacklist and Remove a Service or Application From the List
- View Services and Applications on the Whitelist and Remove a Service or Application From the List
- Disable Port Filtering
- Manage SIM Card Security
- 6. Manage the Modem and Monitor Usage and the Network
- Upgrade the Firmware of the Modem
- Back Up and Restore the Modem Settings
- Return the Modem to Its Factory Default Settings
- View Monthly Data and Session Data Usage
- Set a Plan Limit for the Data Counter
- Change the Billing Cycle Counter or Reset the Data Counter
- View Service Provider, Type of Service, and Signal Strength
- View Account Details and Other Details About Your Modem
- View Information About the Mobile Broadband Connection
- Set Up SMS Alert Messages
- Set the Data Limit for SMS Alert Messages
- View Alerts
- Turn Off the LEDs
- 7. Manage SMS Messages
- 8. Frequently Asked Questions
- What do I do when I can’t connect a device to the modem?
- What do I do when I can’t access the Internet?
- What do I do when the No Signal icon displays?
- Why does the Signal Strength LED show only a few bars?
- Why is the download or upload speed slow?
- Can I connect multiple LAN devices to the modem?
- How do I access the modem’s web pages?
- What do I do if I forget my admin login password?
- How do I disconnect from the mobile broadband network?
- How do I find my computer’s IP address?
- How do I find a device’s MAC address?
- How do I find my mobile phone number?
- Where can I find more information?
- 9. Alerts and Troubleshooting
- A. Default Settings and Specifications
- B. Wall-Mount the Modem

What do I do if I forget my admin login password?..............................................77
How do I disconnect from the mobile broadband network?.................................77
How do I find my computer’s IP address?............................................................78
How do I find a device’s MAC address?...............................................................79
How do I find my mobile phone number?.............................................................81
Where can I find more information?.....................................................................81
Chapter 9 Alerts and Troubleshooting
Alert Messages....................................................................................................83
Quick Tips for Troubleshooting.............................................................................83
Verify Normal Behavior With the LED Bars..........................................................84
Troubleshoot With the LED Bars..........................................................................84
Power LED Bar Is Off......................................................................................85
Power LED Bar Blinks Amber Fast and an Individual Signal and Strength LED
Bar Lights Solid Green....................................................................................85
LAN LED Is Off................................................................................................86
You Cannot Log In to the Modem.........................................................................86
Troubleshoot the Mobile Broadband Internet Connection....................................87
Obtain an Internet IP Address From Your Service Provider............................87
Troubleshoot Internet Browsing.......................................................................88
Changes Not Saved on the Modem’s Web Pages...............................................88
TCP/IP Network Not Responding........................................................................88
Test the LAN Path to Your Modem...................................................................88
Test the Path From Your Computer to a Remote Device.................................89
Appendix A Default Settings and Specifications
Factory Default Settings.......................................................................................91
Technical and Environmental Specifications........................................................92
Appendix B Wall-Mount the Modem
Position Your Modem............................................................................................94
Mount Your Modem..............................................................................................95
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LTE Modem LB1120 and LB1121