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How do I add a 4G uplink — New UI

Written by Sunny

How to Add 4G Uplink in Cloud Controller

Overview

The 4G Uplink feature allows a router or access point to use cellular internet (SIM-based connection) as a backup or secondary WAN link.

This helps maintain continuous internet connectivity at the site even if the primary wired internet connection goes down.

For example:

  • Wired ISP link failure

  • Temporary ISP outage

  • Remote sites with no wired internet

  • Business continuity requirement

Once configured, the device can automatically switch to 4G internet without manual intervention.


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Navigation Path

Follow the below path in Cloud Controller:

Monitor → Select Device → Device Properties → Configure Properties → Add Uplink

This section allows administrators to configure additional WAN links for redundancy.


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Step-by-Step Configuration

Step 1 — Open Device Properties

  1. Login to the Pronto Cloud Controller.

  2. Go to Monitor from the left menu.

  3. Select the required Router or AP device from the device list.

  4. Open the Device Properties tab.

  5. Click on Configure Properties to enter configuration mode.

This enables editing of device WAN settings and uplink configurations.


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Step 2 — Add New Uplink

  1. Click on Add Uplink button.

  2. A configuration panel will open on the right side of the screen.

  3. This panel allows you to define the parameters required for cellular connectivity.


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Understanding Uplink Configuration Fields

Uplink Name

This is a user-defined name to identify the uplink.

Example names:

  • 4G Backup

  • Cellular WAN

  • LTE Failover

Providing a meaningful name helps in troubleshooting and monitoring later.


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Uplink Type

Select Mobile Broadband.

This informs the device that the uplink will use SIM card based cellular connectivity instead of Ethernet WAN.


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APN (Access Point Name)

APN is provided by the mobile operator and is required for internet access over cellular network.

Common examples:

  • AT&T → broadband

  • T-Mobile → fast.t-mobile.com

⚠️ If APN is incorrect, the device will connect to cellular network but internet will not work.


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Module / SIM Slot

Select the SIM slot where the SIM card is physically inserted.

Some devices support:

  • SIM 1

  • SIM 2

Choosing the wrong slot will prevent connectivity.


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TTL (Optional Setting)

TTL is an advanced parameter used by some ISPs for traffic validation.

  • Normally this can be left blank

  • Only configure if instructed by ISP or support team.


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Operator

Shows the detected cellular network operator.

Examples:

  • T-Mobile LTE

  • AT&T LTE

This helps confirm that the device is successfully registering with the cellular network.


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Operator Band

Displays which LTE frequency bands are currently available or being used.

This is useful for:

  • Signal troubleshooting

  • Performance optimization

  • Verifying device compatibility with operator network


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DNS Mode

Defines how DNS servers are assigned.

Recommended setting:

  • Use ISP DNS

This ensures quick and automatic DNS configuration.

Custom DNS can be used for:

  • Enterprise security policies

  • Content filtering

  • Internal DNS resolution


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Advanced Monitoring

Enabling Advanced Monitoring allows the device to continuously check uplink health and internet reachability.

Heartbeat Type

Defines how connectivity testing is performed.

  • Regular mode checks internet access periodically.

Heartbeat Interval

Specifies how often connectivity tests are performed.

Example:

  • 30 seconds

Smaller interval means faster failover detection.


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Saving Configuration

After entering all required values:

  1. Click Save

  2. The uplink will be added successfully.

  3. Device will now show:

    • Primary WAN → Wired

    • Secondary WAN → 4G Ready

This indicates that cellular backup is configured.


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How to Verify 4G Connectivity

To confirm configuration:

  1. Stay in Device Properties

  2. Scroll down to 4G Section

  3. Verify following details:

    • Status (Ready / Connected)

    • Cellular IP Address

    • Public IP Address

    • Signal Strength (dBm)

    • Network Type (LTE / 4G)

    • Operator Name

    • APN Information

If all values are populated, uplink is working correctly.


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Failover Behaviour Explained

  • During normal operation → Device uses Primary Wired Internet

  • If wired link fails → Device automatically switches to 4G Uplink

  • When wired link restores → Device switches back to Primary WAN

This automatic switching ensures:

  • No manual intervention required

  • Reduced downtime

  • Better network reliability

For more info reagagrding
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Important Best Practices

  • Ensure SIM card has active data plan

  • Place device in area with good cellular signal

  • Use correct APN as per operator

  • Enable Advanced Monitoring for reliable failover

  • Keep firmware updated for cellular stability

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