4G LTE CellSpot status lights & ports

Learn what the status lights on the 4G LTE CellSpot mean and how to troubleshoot issues.

 

 

Status lights after setup

Status lights.png

  • After you turn on your CellSpot mini-tower, it goes through a self-installation process.
  • The power light flashes green as the device downloads the latest software and performs location verification.
  • It can take up to 2 hours to complete the setup and the device may restart a couple of times.

 

Status lightMeans
Power = solid greenDevice self-testing and update complete
Internet = solid greenSuccessful Internet connection
Status = solid greenSuccessful T-Mobile network connection
GPS = solid greenGPS position locked (if GPS signal is present)
3G/4G = solid greenDevice is ready to provide 3G/4G LTE service
3G/4G = flashing green

There is 3G/4G traffic in progress

4G LTE = solid green

Device is ready to provide 4G LTE service

4G LTE = flashing green

There is 4G LTE traffic in progress

 

UDP ports

For the 4G LTE CellSpot to work, UDP ports 123, 500, and 4500 must be open. You must contact your ISP and ask if these ports are blocked. If these ports are actively blocked by your ISP, you must ask your ISP to open these ports.

 

  • No port forwarding is needed.
  • Below is what these ports are used for:
    • UDP 123: Syncing clocks
    • UDP 500/4500: VPN or IPSec tunnels, business application
  • Check with your ISP that your connection meets these requirements:
    • Ping / latency: 200 ms or less
    • Upload: 0.5 Mbps or more
    • Download: 2 Mbps or more
    • Bridge mode: enabled

  • If your ISP confirms the ports are open, ask them to add the CellSpot to a DMZ.

 

Open the correct ports

For the 4G LTE CellSpot to connect to T-Mobile's network, ports 123, 500, 4500 must be open. Follow the steps below to determine if the ports are open.

 

Windows 7 instructions

  1. Open a command prompt windows (Start, Run, CMD.exe).
  2. Enter powershell.exe. This changes the Windows command prompt to Powershell.
  3. Enter the command (New-Object System.Net.Sockets.TcpClient).Connect('portquiz.net', 123).
    Windows7.png
  4. Repeat above steps for 500, and 4500. All three ports must be open for the CellSpot to work.

 

Windows 8 and Windows 10 instructions

Port 80 is used as an example for the screenshots. You will need to substitute ports 123, 500, and 4500 for 80 where shown.

 

  1. Open a command prompt windows (Start, Run, CMD.exe).
  2. Enter powershell.exe. This changes the Windows command prompt to Powershell.
  3. Enter the command Test-NetConnection –InformationLevel detailed –ComputerName portquiz.net –Port 123.
  4. Wait for the command to run and verify the below output displays.
  5. If TcpTestSucceeded is True, the port is open. If it is False, the port is closed.
  6. Repeat above steps for 500, and 4500. All three ports must be open for the CellSpot to work.
    Windows8+10.png

 

MAC instructions

  1. Hit Command+Spacebar to summon Spotlight.
  2. Enter Network Utility followed by the return key to launch the Network Utility app.
  3. Select the Port Scan tab.
  4. Enter www.portquiz.net into the window as shown below.
  5. Click the Only test ports between checkbox.
  6. Enter 123 in both fields, then click Scan.
  7. Repeat the process for ports 500, and 4500.

Network+Utility.png

 

Issues during initial setup

 

Light sequence Issue / Steps
  • Power: grey
  • Internet: grey
  • Status: grey
  • GPS: grey
  • 3G/4G: grey
  • 4G LTE: grey

4G LTE Offline

  1. Make sure the device is connected correctly to the router or router/modem combo unit.
  2. Ensure the device is correctly plugged in to a working power outlet.
  3. Wait at least 2 hours after the device was originally plugged in and set up.
  4. Follow steps for Cannot reach T-Mobile network (row 3 below).
  • Power: flashing green
  • Internet: solid orange
  • Status: off
  • GPS: any
  • 3G/4G: off
  • 4G LTE: off

Connection issue

  1. Make sure the device is connected correctly to the router or router/modem combo unit.
  2. Wait at least 2 hours after the device was originally plugged in and set up.
  3. Contact your ISP to ensure ports UDP 500, UDP 4500 and UDP 123 are opened and place the device in a DMZ.
  4. If that does not work, contact us.
  • Power: flashing green
  • Internet: flashing orange
  • Status: off
  • GPS: any
  • 3G/4G: off
  • 4G LTE: off

Cannot reach T-Mobile network

  1. Wait at least 2 hours after the device was originally plugged in and set up.
  2. Make sure your Internet connection is working.
  3. Unplug your modem/router and CellSpot.
  4. Plug in your modem and wait for it to power up completely.
  5. If you have a separate router, plug that in and wait for it to power up completely.
  6. Plug in the CellSpot router and wait for it to power up completely.
  7. Contact your ISP to ensure ports UDP 500, UDP 4500 and UDP 123 are opened and place the device in a DMZ.
  8. If that does not work, contact us.
  • Power: solid orange
  • Internet: solid orange
  • Status: solid orange
  • GPS: solid orange
  • 3G/4G: solid orange
  • 4G LTE: solid orange

Hardware issue

  1. Wait at least 2 hours after the device was originally plugged in and set up.
  2. Make sure the solid orange lights are lit up for at least 10 minutes.
  3. If that does not work, contact us.
  • Power: any
  • Internet: any
  • Status: any
  • GPS: flashing green
  • 3G/4G: any
  • 4G LTE: any

T-Mobile cannot verify the mini tower location via GPS signal lock

  1. Follow the steps in 4G LTE CellSpot address notifications for "Unable to confirm address".
  2. Wait at least 2 hours after the device was originally plugged in and set up.
  3. If it has been more than 2 hours, it means the device cannot capture GPS signal. Try moving it closer to a window.

 

Issues after setup is complete

 

Light sequence Issue / Steps
  • Power: flashing orange
  • Internet: solid green
  • Status: flashing orange
  • GPS: any
  • 3G/4G: off
  • 4G LTE: off

CellSpot is not installed at a licensed T-Mobile location

  1. The 4G LTE CellSpot is not installed at a licensed T-Mobile location where we have an established relationship with local 911 public service answering point.
  2. Move the device to an approved location.
  • Power: any
  • Internet: any
  • Status: any
  • GPS: solid orange
  • 3G/4G: any
  • 4G LTE: any

CellSpot is unable to acquire GPS signal

  1. Follow the steps in 4G LTE CellSpot address notifications for "Unable to confirm address".
  2. Wait at least 2 hours after the device was originally plugged in and set up.
  3. If it has been more than 2 hours, it means the device cannot capture GPS signal. Try moving it closer to a window.
  • Power: flashing green
  • Internet: solid green
  • Status: solid orange
  • GPS: any
  • 3G/4G: off
  • 4G LTE: off

Authentication failed

  1. Follow the steps in 4G LTE CellSpot address notifications for "Unable to confirm address".
  2. Wait at least 2 hours after the device was originally plugged in and set up.
  3. If that does not work, contact us.
  • Power: solid green
  • Internet: flashing green
  • Status: flashing orange
  • GPS: any
  • 3G/4G: flashing orange
  • 4G LTE: flashing orange

Internet connection does not meet the minimum requirements

  1. Test your broadband connection and make sure your ISP is not having an outage.
  2. If the Internet is working, confirm the device is set up correctly and CellSpot is plugged directly into the modem.
  3. If that does not work, contact us.
  • Power: flashing green
  • Internet: flashing green
  • Status: flashing orange
  • GPS: any
  • 3G/4G: off
  • 4G LTE: off

Software did not load properly

  1. Unplug the 4G LTE CellSpot, wait 5 seconds and plug it back in.
  2. Press and hold the reset button for 30 seconds. The device will reset and update its software.
  3. If that does not work, contact us.
  • Power: flashing green
  • Internet: solid green
  • Status: flashing orange
  • GPS: any
  • 3G/4G: off
  • 4G LTE: off

Connectivity failure

Contact us for additional support.

  • Power: solid green
  • Internet: solid green
  • Status: solid / flashing green
  • GPS: any
  • 3G/4G: solid / flashing green
  • 4G LTE: solid / flashing green

Maximum number of simultaneous voice users reached. Cannot make calls but others can make calls.

This status will go away once there are less than 8 simultaneous voice users.