LSSU – Link Status Signalling Unit
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LSSU – Link Status Signalling Unit

The Link Status Signalling Unit is sent between two SS7 signalling points and serves to indicate the status of the specific link. When a link is determined to have failed the signalling point that detected the error condition is responsible for alerting adjacent signalling points that the link is not available. The LSSU is used to perform this task.

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