Levels of Interoperability
User Task level
-
do systems support IR tasks of one or more user groups?
Semantic level
-
can Z-clients and Z-servers and local IR systems preserve and act
on meaning of IR tasks
High-level protocol (functional)
-
do Z-client and Z-servers support appropriate Z39.50 services for
user tasks
Low-level protocol (syntactic)
-
do Z-client and Z-servers interchange PDUs according to standard?