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Note

The locations and technical features of the broadband connections have been provided by the service users themselves, who are entirely and exclusively liable for their accuracy. The speed resulting from the measurement as the final speed of the connection is also affected by a series of factors, such as the quality of cables, connections and equipment or electromagnetic interference. It should be noted that the maximum theoretical speed, using ADSL and VDSL technology, is based on the estimated distance of the connection from the local exchange.

Useful Information

  1. Your measurements are only recorded and projected on the map once you have registered with the system and conducted at least three (3) measurements. As registered users you have access to the records of your measurements and to statistical breakdowns.
  2. The use of a computer that can be directly connected by cable (Ethernet) to your broadband connection’s modem/router is recommended. Using a wireless network (WiFi) may restrict connection performance.
  3. Before starting to measure, ensure that your broadband connection is not being used by any other software, computer or other type of appliance in your local network (e.g. pay-TV decoders, security cameras, torrents). Network traffic from other data transmission sources may reduce measurement accuracy.
  4. In order to use the NDT, M-Lab Notifier and Glasnost measurement tools you may need:
    • To install the most recent version of Java from the java.com website, following the instructions displayed on the site.
    • To accept the source of the tool as trustworthy when challenged by the web browser or operating system.
    • To accept communication between the measurement tool and the Internet when challenged by your computer’s firewall.
  5. HYPERION uses the M-Lab measuring system, which automatically allocates each measurement to the nearest available server. When all the servers in the country are busy with other users’ connection measurements, it is possible that your measurement may be conducted by a server in another country. In that case, for registered users the measurement results will not be included in the statistics produced by HYPERION.
More detailed information is available on the Network Diagnostic Tool (NDT) and Glasnost (NSDI 2010 paper) websites.