Project specifics:

  • Target ClientS-NET Sp. z o.o.
  • CategoryInternet Service Provider
  • PlacePoland, Cracow-Katowice section

In our Partner’s words:

This investment is a response to the increasing market demand for the transmission of a big amount of data between cities in our country and it will also improve the quality of the services offered by S-NET. The system will be used not only to provide telecommunication services, but also for the purpose of our cloud computing solutions.


I am personally very satisfied with the choice of Salumanus as our implementation partner. The whole installation was completed within the specified time and budget. The system has been in use for over half a year now and the team of Salumanus from Cracow takes care of its maintenance and expansion.

The implementation of 400 GBPS DWDM system between Cracow and Katowice

Project designed and implemented by Salumanus in collaboration with S-NET.
Client’s profile:

S-NET is one of the largest Internet Service Providers in Southern Poland. The company offers innovative ICT services and provides cloud computing solutions.

Project description:

With the help of Salumanus, S-NET implemented a DWDM system (Dense Wavelength Division Multiplexing) – an intercity system which works on the distance of approx. 112 km between Cracow and Katowice.

In detail:

The implementation of DWDM system required the use of two optical fibres. One of the two demarcation points was the main S-NET’s network node in Cracow and the other was 4DC’s collocation hub located in Katowice. The project was based on Raisecom and GBC Photonics’s products offered and delivered by Salumanus.

Benefits for the Client:

This solution enables the implementation of 40-channel 10Gb/s system, which can also operate at 100 Gb/s. It is designed first of all for the company’s own needs, but it is already known that the system will be also used by local and national operators.

The implementation of our own DWDM system between Cracow and Katowice is another step in the development of S-NET’s own network. Currently, the company owns several hundred kilometres of fibre optic cable on the area of Cracow and has its own nodes in Cracow, Warsaw, Katowice and Łódź. Building the first section of an intercity network enabled the company to satisfy the needs of operators from Małopolska and also the needs of S-NET.

SummerizesNiko Bałazy - President of the Board, S-NET

See S-NET’s offer at:S-NET