Information
Definition
A modem provides a communication link to an external network, such as cellular mobile data or broadband. It is normally considered alongside site connectivity, router/modem configuration, signal availability and ongoing remote support.
Why it matters
It affects whether chargers can communicate with backend systems where fixed internet is unavailable or unreliable. For UK users, it affects whether a charger can remain connected reliably for authorisation, payments, diagnostics and software updates.