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πŸš€ Update July 2026: New Centro Business 3.0 Firmware "10.04.14" available β€” fixes the Alcatel/TCL Internet Backup Dongle issue. Details in the Release Note.

Ports, LEDs and Buttons

Descriptions of ports and LED explanations for the various routers can be found here.

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PROTOTYPE

We are developing a new format here for the previous instructions, which were exclusively provided as PDF documents.


Select your router model:​

CB3

IconDescription
WLAN LED
LED off – WLAN is switched off.
LED glowing blue – WLAN is switched on.
LED flashing white – WPS mode is active.
Service LED
LED glowing white – Site networking (BNS/EC-S) is activated.
LED glowing red – Site networking is interrupted.
Telephony LED
LED off – No telephony services subscribed or a fault is present.
LED glowing green or white – Telephony is activated.
LED glowing red – No number registered yet or registration is in progress.
Internet Backup LED (Customers with "Internet Backup failover" service)
LED off – No backup stick connected.
LED flashing white (1-2x per sec.) – Backup stick is being installed.
LED glowing white – Backup service is ready.
LED flashing white/red – Internet Backup is in operation.
LED glowing red – A fault is present.
LED flashing red rapidly (3-4x per sec.) – Error occurred during activation.
Mobile Internet LED
LED off – No connection to a Mobile Internet device.
LED flashing green – Connection to Mobile Internet is being established.
LED glowing green – Mobile Internet is active.
LED glowing red – A fault is present.
Internet LED
LED off – No connection to the internet.
LED flashing white – Connection to the internet is being established.
LED glowing white – Internet connection is active and IP address assigned.
LED glowing red – A fault is present.
Power LED
LED off – Router is switched off (check power supply).
LED flashing white – Router is starting, being configured, or receiving an update.
LED glowing white – Router is ready for operation.
LED glowing red – A fault is present.

FAQ – Router Installation​

Why are my LEDs not glowing brightly?

Centro Business 2.0:

  • The installed LEDs have a theoretical lifespan of approx. 5-7 years, during which a loss of luminosity of approx. 40% is normal. Due to a combination of operating time and ambient temperature, they unfortunately "burn out". This has no impact on the function of the router.

Centro Business 3.0:

  • To optimize the lifespan of the LEDs in the CB3.0, a dimming process (75%) has been implemented which dynamically controls the luminosity when the device is handled. For example, when the WLAN button is pressed, the LEDs are "awakened".
Can I restore a complex router configuration after a new setup?

Yes, find out more in the chapter Backup and Restore


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