Overview

This guide provides step-by-step instructions for configuring a custom Access Point Name (APN) on Robustel gateways running the RobustOS Pro system, including models such as EV8100, EG51xx series, R1520LG, LG5100, EG5200, and MG460. It ensures proper SIM card connectivity to the mobile network and addresses common issues like connection failures or PIN FDN (Fixed Dialing Number) restrictions, enabling seamless VoIP or data services for applications like elevator communication systems.

Prerequisites

Before starting, ensure you have the following:

• Device: Robustel gateway running RobustOS Pro (e.g., EV8100, EG51xx series, R1520LG, LG5100, EG5200, MG460)
• SIM Card: A tested and working SIM card with custom APN details (provided by the carrier)
• Management Interface Access:
  • A computer or device connected to the gateway via Ethernet or Wi-Fi
  • Default management IP: 192.168.0.1 (refer to the device manual)
  • Default credentials: Username admin, Password admin (or check the device label)
• APN Information: Obtain the following from your SIM card carrier:
  • APN name (e.g., custom.apn.example)
  • Username (optional)
  • Password (optional)
• Tools: A browser (e.g., Chrome, Firefox) for accessing the gateway’s web interface

Steps to Configure APN

Step 1: Log in to the Gateway Management Interface

1. Connect your computer to the Robustel gateway via Ethernet or Wi-Fi.
2. Open a web browser and enter the gateway’s IP address (default: http://192.168.0.1).
3. Log in using the admin credentials (default: username admin, password admin).
   • Note: If the default credentials do not work, refer to the device manual or contact your administrator for the correct credentials.

Step 2: Navigate to APN Settings

1. In the management interface, locate the “Cellular” section 
2. Click on  “Cellular.”
3. Find the “Advanced Cellular Settings” option.

Step 3: Enter Custom APN Information

1. Disable Automatic APN Selection, default is enable
2. Enter the following details provided by your carrier:
   • APN: Enter the APN name (e.g., custom.apn.example).
   • Username: Enter the username (leave blank if not provided).
   • Password: Enter the password (leave blank if not provided).
   • Authentication Type: Select the carrier-recommended type (e.g., PAP, CHAP, or None).
3. Verify other settings, such as network mode (e.g., 4G/3G, depending on carrier support).
   
   

Step 4: Save and Reboot

1. Click “Submit” and “Save&Apply” to save the APN configuration.
   
   
2. After apply changes, the module service will be reboot, please wait a while
3. After rebooting, return to the management interface and check the “Status” page to confirm if the SIM card shows “Connected” or has been assigned an IP address.
   
   
   
   

Step 5: Test Network Connectivity

1. Verify the SIM card connection:
   • Check the “Status”  page to confirm the gateway is connected to the mobile network (e.g., 4G/3G) and has an IP address.
2. Perform a ping test to validate connectivity:
   
   

   ping 8.8.8.8
   ping www.google.com
   

3. If the ping is successful, the APN configuration is correct, and the network is operational.
4. If the ping fails, note the error message (e.g., timeout or DNS resolution failure) and proceed to troubleshooting.