@Smithy7000 

You can change only the Internet port negotioation speed (which in your case is not necessary) - check this thread.

Try using another quality made ethernet cables CAT 5E or above and use the LAN1 and LAN2  ports.

Hi @Smithy7000,

Thank you for reporting your issue to our community.

As terziyski said, please make sure that the Ethernet cables you are using are CAT5E or higher. And compare different LAN ports, such as LAN 1, LAN 2.

EX820v is a customized device specifically designed for local Service Providers. Its software is tailored to meet the unique requirements of these providers, ensuring alignment with their specific needs.
If the problem persists after trying these steps, we recommend contacting the technical support of your Service Provider who supplied the device, as they are best suited to provide the necessary assistance for your device.