Glossary
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A
access point identifier (API)
To check whether a path is correctly provisioned a path trace can be set. A label (for
example a word) is sent along the path from one termination point to the other. This
label is called
trail trace identifier (TTI). If the TTI is a specific string, this string is
called
access point identifier (API). If the expected API equals the accepted API, the
transmission path is well provisioned.
acknowledged information transfer service (AITS)
A LAPD mode.
In the
acknowledged information transfer service (AITS), PDUs are numbered and
transmitted sequentially, and acknowledgment PDUs are sent back from the receiver to
the sender. If a PDU is lost, that is, if the sender gets no acknowledgment, the PDU is
retransmitted.
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