Method and system for determining data transfer margins for network connections

The invention relates to determined data transfer safety coefficient and/or bit rate of method and system for network communication connection with the use, (10) and receiver (11) with a need for determining network communication connected (12) known physical length between the transmitter (13). Power spectrum in relying on the modem type (101, 102, 103 and 104) in transmission rendering condition (20) and aid of a measuring of power device and measurement. Connecting (12) physical different length for network communication (13) and cable core diameter (141, 142, 143 and 144), efficient signal strength for determining attenuation and hence with. In addition, at least one relying and crosstalk parameter, and number and an equalizer condition coefficient; and power spectrum and substrate for determining noise layer. (31) Is modulating and/or or a code based on different data transmission with the aid of the Gauss' conversion module desired the signal strength and corresponding noise condition layer, confirming data transfer protective tube for predetermined bit rate. Data transfer protective tube and adjusting with the aid of correction factor, the middle error of the correction factor comprises a latch the data security processing coefficient and effective data exchange according safety coefficient compares to obtain. Finally; and effective data transfer protective tube for storing and base, according to transmitter (10) and receiver (11) and lower determining network communication connected (12) known physical hole (13), determining of the corresponding communication network connecting (12) data transfer protective tube.