MQI channels

An Message Queue Interface (MQI) channel connects an IBM® MQ MQI client to a queue manager on a server machine, and is established when you issue an MQCONN or MQCONNX call from an IBM MQ MQI client application.

It is a two-way link and is used for the transfer of MQI calls and responses only, including MQPUT calls that contain message data and MQGET calls that result in the return of message data. There are different ways of creating and using the channel definitions (see Defining MQI channels ).

A client connected to a queue manager using an MQI channel. The channel has a client-connection on the client and a server-connection on the server. — Figure 1. Client-connection and server-connection on an MQI channel

[z/OS] An MQI channel can be used to connect a client to a single queue manager, or to a queue manager that is part of a queue-sharing group (see Connecting a client to a queue-sharing group ).

There are two channel types for MQI channel definitions. They define the bi-directional MQI channel.

Client-connection channel: This type is for the IBM MQ MQI client.
Server-connection channel: This type is for the server running the queue manager, with which the IBM MQ application, running in an IBM MQ MQI client environment, is to communicate.