A measurement represents a snapshot of the quality of your Internet access. If test results derivate from advertised speeds, this does not necessarily mean that your Internet provider is not fulfilling the contractual agreement.
- The connection can be impaired by various technological factors like WLAN router, system configuration, etc. (see also influencing factors on the result)
- Despite the good Internet connection to the test server, it can happen that the test server or the connection to the test server is overloaded.
- When interpreting the test results, you should bear in mind that while a (quite high) maximum bandwidth is mentioned in advertising campaigns by most of the providers, a much lower bandwidth is contractually guaranteed.
- Furthermore it has to be taken into consideration that the maximum bandwidth according to the contract (down- / upload) may have an impact on the test result ("traffic-light" representation and map view).
- Typically, the data connection is contractually limited to a certain speed ("up to" speed). Operators have the technical ability to remove such a limitation for individual IP addresses. This can affect the RTR-NetTest servers for example. In some cases this may lead to higher measurement results than normally possible. Such measures have been observed with tests within the network of Hutchison Drei Austria GmbH.
In any case, you can only get a reliable result if systematic and random measurement errors are taken into account and the RTR-NetTest is repeated frequently.