What is the Z39.50 protocol?
Z39.50 is a an American National Standards Institute (ANSI)/NISO communications protocol. It is used to search and retrieve bibliographic data in online databases of library holdings. For more information, see The ANSI/NISO Z39.50 Protocol at www.cni.org. We have installed zServer Pro (a Z39.50 server) to facilitate communication with the LEONARDO catalog using the Z39.50 protocol. This provides an alternative to searching with HIP.