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LU6.2 Services for OpenVMS User's Guide   |   Previous Topic
  |   Next Topic   |   Contents   |   Index  Introducing BEA
MessageQ LU6.2 Services   The BEA MessageQ LU6.2 Services for
OpenVMS product allows users to communicate with IBM application
programs using Advanced Program-to-Program Communications (APPC)
over System Network Architecture (SNA) LU6.2 sessions.
APPC/LU6.2 communications are connection-oriented and half-
duplex. This means that before two partners can exchange
messages, they must first establish a connection (connection-
oriented), and that one partner is sending when the other is
receiving (half-duplex).  This chapter includes the following
topics:  Basic Terms and Concepts  This section provides general
information about BEA MessageQ applications, APPC, the Port
Server, and other application components.  The BEA MessageQ
LU6.2 Services Product  The BEA MessageQ system is a
connectionless, stateless communications system. This