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Provision of telephone numbers using IP and SIP technologies.

In providing telephone numbers with connection through IP and SIP technologies, Mastertel assists the client in creating a reliable and unauthorized-access-protected connection channel with the potential to build internal and external telephony systems in addition to a well developed set of accompanying telecommunications services.

Our approach

We recommend connection through IP and SIP as a more modern way of organizing ones telephone system in large companies. This type of connection means that voice and data transmission is performed through the same channels. Depending on the clients needs, the most important type of traffic is given priority. We connect clients through digital data channels or directly through the Internet with security protection for all information transmitted.


  • The provision of a whole range of information services within the framework of an organized connection channel is possible;
  • Potential economy compared to other types of connection;
  • Suitable for building external and internal telephone systems;
  • Large amount of combined user equipment is possible;
  • Absence of limitations on a number of multichannel lines;
  • Many possibilities in terms of scaling; possible to use with high loads, e.g. in call centers.

Services may be provided within the framework of a virtual private network or through the Internet with its high level of security for transmitted information. Should it be necessary to link up to Mastertel's network, a private virtual network may be set up using fiber-optic lines.

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