NSAP address

A Network Service Access Point (NSAP) addresses, defined in ISO/IEC 8348, are identifying labels for network endpoints used in OSI networking.

NSAP addresses are allocated by the ISO, through a system of delegated authorities, which are generally national standards organizations.

NSAP addresses are used in the following OSI-based network technologies:

• ATM switched virtual circuit networks
• X.25
• Frame relay

and there are probably many more...

External references:

• http://www.nni.nl/nl/pro/line/ISOIEC8348_guide.html