FIELD: channel coding for data transmission system . SUBSTANCE: proposed device and method can be used for negotiating speed of transfer of channel-coded characters with aid of both nonsystematic and systematic code, or both at a time, using single structure in data transmission system. Transfer speed negotiation device has plurality of speed negotiation units whose quantity is inversely proportional to channel coder operating speed. Speed is negotiated by varying source parameters including number of input characters, number of output characters, and parameter governing order of punching or repetition. EFFECT: enlarged functional capabilities. 83 cl, 11 dwg, 7 tbl
