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Queen's University Library

Z39.50 and EndNote Access to QCAT


QCAT is unavailable due to regular system maintenance:

  • daily from 2:00-2:30 am; and
  • Wednesdays from 6:00-6:30 am

QCAT, the Queen's University Library online catalogue, is "Z39.50-compatible". This means that individuals and organizations, who have Z39.50 client software installed on their own computers or institutional servers, potentially can search QCAT using their own software rather than the catalogue's "native" web interface. (For a technical definition of Z39.50, see below.)

The most commonly used Z39.50 client software for PCs and Macs include: ProCite and Bookwhere. In order for any of these client programs to be used for connecting to QCAT, a QCAT configuration profile must be created in the program software, as follows:

Z39.50 Specs for QCAT, Queen's Library Catalogue

Server address / IP address:
Port number:
Database name / Hostname:
Record format:
  1. Queen's uses Ex Libris' Voyager software, which supports Z39.50 protocol version 3.
  2. Voyager supports Boolean AND/OR/NOT searching only on search types which have a position attribute of 3.
  3. For further details regarding the Voyager attribute sets, consult: http://www.loc.gov/z3950/lcserver.html (Queen's uses the same system as the Library of Congress)

What is Z39.50?

"Z39.50" is an international standard for specifying a client/server-based protocol for searching and retrieving information from remote databases. The standard is most widely used within the library community, enabling large information databases (such as library catalogues and online bibliographic databases) to "talk" to each other. The Library of Congress is the Maintenance Agency and Registration Authority for the standard.

For more information about the Z39.50 protocol, consult the Library of Congress' Z39.50 Maintenance Agency website, at: http://lcweb.loc.gov/z3950/agency/.

Last Updated: 16 July 2015