Huawei B681 - Manual

This user manual covers a dual-mode networking device designed for internet access via computer or voice calls through telephone connections, emphasizing setup, configuration, and operational safety. The guide includes physical design details–such as ports (LAN, telephone) and indicator LEDs–and instructions for installing hardware components like SIM cards and external antennas. It also addresses wireless configurations, including Wi-Fi setup methods (WPS and manual scanning), web management for device settings, and troubleshooting common issues like connectivity failures or default restoration. Safety is a central focus, covering environmental restrictions (e.g., medical environments, explosive atmospheres) and operational precautions to prevent damage, interference, or misuse. The document further highlights compliance with regional regulations and provides region-specific support contact information.

Page 1 – Quick Start Connection Scenarios
Page 2 – Physical Appearance and Indicator Status
Page 3 – SIM Card Installation and Positioning
Page 4 – External Antenna and Voice Call Setup
Page 5 – Physical Connectivity and Power Control
Page 6 – Wireless Connection Setup Methods
Page 7 – Web Management and Internet Configuration
Page 8 – Factory Reset and Troubleshooting
Page 9 – Environmental Safety Guidelines
Page 10 – Operational and Maintenance Safety
Page 11 – Handling Warnings and Warranty Protection
Page 12 – Legal Notices and Copyright

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B681 Quick Start

Note:



Figures in this guide are only for your reference. For details about the

particular model you have chosen, contact your service provider.



Check the information about the product and its accessories when you

purchase it. Some accessories are not provided in the product package. If

necessary, contact your local dealer to purchase them.



This guide briefly describes the device functions. For details about how to

set the management parameters, see the help information on the web

management page.

1 Getting to Know Your Device

Application Scenarios

Scenario 1:

You can connect your computer to the device to access the Internet. The specific

connection steps depend on your computer's operating system. Follow the

displayed instructions to connect the device to your computer.

Scenario 2:

You can connect a telephone to the device's telephone port to make voice calls.

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