This read-write 20-byte binary object holds the local Network Service Access Point (NSAP) address for the connection endpoint, structured with a 13-byte prefix, a 2-byte Cisco vendor ID, 2 reserved bytes, 2 bytes encoding slot and port numbers, and a final 1-byte selector (SEL). Admins configure or inspect this when the connection uses NSAP-based addressing (as in PNNI signaling), since the embedded slot/port fields let the address itself encode the physical location of the endpoint on the shelf. For example, an admin decoding ausmLocalNSAP could extract the slot and port number directly from its bytes to confirm the address correctly identifies this card's physical position.