Reject (REJ) is a control field in the HDLC protocol for negative confirmation after the occurrence of a bit or sequence error. A REJ command indicates that all previously received I-frames were error-free, but the subsequently transmitted data must be retransmitted. The sender is requested by REJ frame to retransmit the lost frame. With the variable N(R) in the REJ frame, the receiver signals which frame it expects next.
- In GSM and ISDN networks, reject is the rejection of a received component by the transaction capability of the local user. If the user detects a wrong component, he can reject it by means of a reject.
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|Englisch:||reject - REJ|