status indication emergency (SS7) (SIE)

The Status Indication Emergency Alignment (SIE) is a status message in the SS7 signalling. The SIE status information is transmitted with the status field( SF) of the Link Status Signal Unit( LSSU), and when there is only one Signalling Link( SLK) that requires synchronization, for example. During the alignment process, an Emergency Alignment must be executed in 0.6 s.