This work is a study on the performance of the main versions of protocol TCP and of its variation STP satellite transmission. Due to great distance of the land to the geostationary satellites, the satellite transmission is characterizes for a great delay of propagation and greater occurrence of errors in comparison with the optics transmission. These problems cause serious impact in the performance of the TCP therefore eventual losses of package imply in retransmission and delayed reset of the protocol. In this study, we specifically approach the effect of the errors in the canal as source of losses of package, considering models of statistically independent errors and burst errors. This type of error generally occurs for the use of convolutional code associates with Viterbi decoder. Through simulation in computer using Matlab software, we initially had been characterized the sequences of errors generated for some typical convolutional codes. After that, the effect of these sequences was introduced in simulation of an application FTP/TCP in canal satellite, compared it outflow gotten with the different versions of the TCP, using ns-2.