LINK TYPES

LINK TYPES
North American Signaling Network links are characterized by their
usage and grouped into the following classes:
• A-link (“access”): connects signaling end-point (for example,
local exchange or MSC in GSM) to STP
• C-link (“cross”): interconnects mated STP nodes
• B-link (“bridge”) and D-link (“diagonal”): interconnect peer
STP pairs
• E-link (“extended”): connects signaling end-point to another
STP pair for enhanced reliability
• F-link (“fully associated”): connects two signaling end-points