Diagnostics of services operation by indicators on the equipment

If they are working as they should, the next question may be about the VoIP gateway. In this article we tell you how to check the operation of the services yourself and what to do in case of no Internet connection.

Subscriber terminal (ONU/ONT)

The standard indicators on the subscriber terminal panel are as follows:

• if the indicator is lit, the ONT power is ON;
• if the indicator is not lit, the ONT power is OFF.

• if the indicator is lit, the registration on the OLT (optical line terminal) is successful;
• if the indicator is flashing, the registration process on the OLT is in progress;
• if the indicator is not lit, the OLT registration failed or there is no normal optical signal input.

• if the LED is lit, the optical power is below the receiver's sensitivity;
• if the LED is not lit, the optical power is normal.

• if the LED is lit, the Ethernet connection is normal;
• if the LED is flashing, the Ethernet port is in the process of transferring data;
• if the LED is not lit, the Ethernet connection is not established.

The number of LEDs differs depending on the model. For example, the LEDs indicated in the table can be seen on the Picotel PU-X910 ONU panel. If you consider the Huawei HG8120C ONT, in addition, you can see TEL, which in the switched-on state indicates the connection of the public telephone network (PTN), as well as two LAN ports (LAN1 and LAN2). If the router is switched on, the LAN1 port indicator should be lit.

If the POWER and PON indicators on your device are lit and the LAN indicator is flashing, the router is in good condition.

If none of the indicators are lit, you should check whether the power supply is connected to the socket, whether ONU is switched on, and whether there is electricity.

If all lights are on except LAN, the Wi-Fi router may be faulty or the UTP (unprotected twisted pair) cable may be damaged. Check that the Internet cable is plugged into the WAN port and the PC is connected to one of the LAN ports.

If the LOS is flashing red, there is no optical signal. In this case, we recommend checking to see if the optical cable has any kinks from the optical outlet to the router. Occasionally, the LOS indicator may flash after you have moved a device in your home from one place to another by first disconnecting the patch cord and then reconnecting it. The reason for the disappearance of the optical signal may be dust on the connector. In this case, wipe the white optical connector of the cable with an ordinary alcohol wipe and after cleaning, reconnect it.

If the problem persists after the steps you have taken, please contact the Service and Information Centre and our specialists will help you to rectify the problem.

Wi-Fi router

Almost all Wi-Fi router models have an indicator panel with LED indicators on it. Some of them glow constantly, some of them may flash rhythmically, and some of them flash chaotically.

The standard indicators on the Totolink A3002R AC1200 panel are as follows:

• if the LED is lit, the router is booting up;
• if the LED is flashing, the router is operating normally;
• if the LED is not lit or is lit continuously for more than 1 minute, the router is malfunctioning.

• if one or the other LED is lit, data transmission is in progress at the corresponding 2.4 GHz, 5 GHz frequency.

• if the LED is lit steadily, there is an active network connection;
• if the LED is blinking green, data is being exchanged;
• if the LED is blinking or lit yellow or orange, there is a problem with the connection and you cannot access the Internet;
• if the LED is not lit, the network cable is not connected or there is no Internet signal.

• if the LEDs are lit or flashing, data transfer is in progress.

Depending on the model of Wi-Fi router, the indicators on it may differ. Therefore, it is better to check the detailed information in the manual for your device.

If there is no Internet connection, check if the network cable is properly connected to your PC or Wi-Fi router. If yes, check if your operating system recognises the network adapter. If the drivers for the network adapter are installed, but there is no Internet access, go to your personal account and check the status of the service.

In cases when Internet connection is lost, most often it is enough to restart the router. In this way it is possible to eliminate any temporary errors and malfunctions. After the Wi-Fi router is restarted, it reconnects to the network with a "clean slate".

To reboot the router, simply unplug the device for 30 seconds. Please note that you should not press RESET to do this, otherwise the settings will be reset to factory defaults and the service will not work until the router is reconfigured. After switching on the router, wait a few minutes for the router to boot up and for your computer to register on the network.

VoIP Gateway

There are 4 types of LEDs to help you manage the status of the Grandstream HT812/HT814 VoIP Gateway.

Diagnostics the VoIP gateway operation involves checking a number of indicators that indicate different states of the device. Here are some typical LED indicators on the VoIP Gateway: Power, WAN, LAN (number varies by model), Phone (number varies by model).

• if the LED is lit, the gateway is powered on;
• if the LED is flashing, the gateway is booting.

• if the LED is lit, the gateway is connected to the network through the WAN port.

• if the indicator is lit, the gateway is connected to the network through the LAN port.

• if the LED is solid blue, the gateway is registered and available;
• if the LED is not lit, the gateway is not registered;
• if the indicator is blinking every 500 ms, the gateway is off-hook or busy;
• if the indicator is blinking slowly, it indicates voicemail.

Use the tips collected in one place — and easily identify what might be wrong with your equipment in the event of a service outage.