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Glossary

Telecoms terms and abbreviations can be a little confusing, even for the most experienced engineers. Here’s a short glossary of some of the terms we use.

L

LAN
Local Area Network
A communication system that provides reliable high-speed, point to point, connections for routing data packets between devices in a single building or complex.
LCN
Logical Channel Number (x.25)
LI
Length Indicator
LINK SETS
Link Sets
Signalling data links are grouped into link sets. All links in a link set must connect to a single point code. Up to 16 links can be assigned to a single link set.
LNP
Local Number portability
LOCREQ
Location Request
LSSU
Link Status Signalling Unit