What is VHCN and why should that abbreviation interest you
In the provider catalogue, some offers display a badge VHCN. This is an abbreviation that the average internet user rarely encounters, even though it underpins the rules governing the planning of internet network development across Europe and in the Czech Republic today. It is worth knowing what it means and why the catalogue displays it at all.
What the abbreviation means
VHCN is the abbreviation of the English term Very High Capacity Network - a network with very high capacity. The term is introduced by the European Electronic Communications Code (EU Directive 2018/1972), which was incorporated into Czech law through the Act on Electronic Communications (127/2005 Coll.). The definition states that a very high capacity network is one that is either entirely composed of optical elements up to the distribution point at the customer's connection location, or under normal conditions achieves comparable performance during peak times in terms of available bandwidth for both downloading and uploading data, resilience, error rate, latency (response time) and its variability.
The definition is formulated by the regulatory body BEREC in detailed guidelines for assessing VHCN networks, and individual national authorities, including the Czech Telecommunication Office (ČTÚ), apply it to specific networks within their territory according to these guidelines. It is therefore not a marketing term of an individual internet provider but a shared technical definition used by regulation across the entire European Union.
In practice: when a network meets the VHCN definition
- Fibre connections (FTTH, FTTB) practically always meet the definition - they consist of optical fibre running all the way to the house or flat. How FTTH and FTTB differ is explained in the article Optical internet: how it works and how to tell if you have it in your home.
- Some advanced cable and wireless technologies may also meet the definition if they actually achieve comparable parameters to fibre, in practice, however, this is an exception rather than the rule.
- Older metallic connections (DSL) and common wireless technologies usually do not meet the definition - their parameters are far from those of fibre.
Why this matters even outside official documents
The VHCN badge in the katalogisp.cz catalogue is a quick way to distinguish at a glance between offers based on modern high-capacity networks and those relying on older technology, where actual performance may be worse or less stable even if the advertised speed figure is the same. For decision-making, this is as useful a signal as the technology type itself - it relates to what the numbers in offers actually mean, as explained in the article Internet speed: what do the numbers in offers mean.
VHCN networks are also the target of national and European policies for the development of internet infrastructure - grant programmes and coverage plans are formulated in terms of "coverage by VHCN networks", not in specific technologies. So when it is said how many households have "access to next-generation high-speed internet", this definition is exactly what is meant.
Why the European Union needed such a definition at all
Before the concept of VHCN existed, the goals for internet infrastructure development were often described simply by a speed figure - "internet over 30 Mb/s" or "over 100 Mb/s". The problem is that such a number says nothing about whether the network can offer this speed stably, with low latency and sufficient capacity even under higher load, or whether it is just a short-term maximum under ideal conditions. Therefore, the VHCN definition describes a set of network properties - capacity, resilience, error rate and latency - instead of a single number, which allows for comparing technology with technology, even between different countries of the European Union using the same measure.
In the Czech Republic, the term is also reflected in the National Plan for the Development of Very High Capacity Networks, which is prepared by the Ministry of Industry and Trade in cooperation with the Czech Telecommunication Office (ČTÚ) and determines where network development should be prioritised in the coming years - typically in areas where a VHCN network is still missing.
How to find out if VHCN is available in your area
The fastest way is to enter an address into the search on katalogisp.cz, for each offer found, the technology and VHCN badge will be displayed if the network meets the criteria. An overview of providers by region and technology is also available in the provider catalogue. The complete procedure for comparing offers and selecting the most suitable one is described in the article How to choose an internet provider.
Summary
VHCN is not a marketing term but a definition from European and Czech legislation describing networks capable of sustaining high speeds and stable quality over the long term. In the catalogue it serves as a quick reference signal, not a substitute for verifying specific offers at your address.