When a message in a node trunk network queue is discarded before it can be output on the trunk network which indicates that the message has not been delivered to addressees served by other nodes on the network.
Kuxa umyalezo osemgceni wenethwekhi yetranki yendibano-malungu ulahlwe phambi kokuba ukhutshwe kwinethwekhi yetranki obonisa ukuba umyalezo awuhanjiswanga apho uthunyelwa khona zezinye iindibano-malungu ezikwinethwekhi.