WORK

• Operates in client/server environment.

• Acting as common language.

• Bridges the many “languages and dialects”.

• Client and the server able to speak the Z39.50 language.

• Use standard TCP/IP Internet communications protocol.

• Standardizes the messages.

Models on how Z39.50 is used in information retrieval 

References.
Z39.50:A Primer on the Protocol
http://www.niso.org/publications/press/Z3950_primer.pdf

welcome to a Z39.50 instructional site

http://www.txmike.com/Presentations/Z3950/