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Structure and Data Flow

The illustration shows the data flow in the PPI.

As this illustration shows, programs issue calls to CNMNETM (CNMNETV) to send data to the nominated receiver program. The data is buffered in the SSI address space in queues associated with each receiver. When data is available for a given receiver, your product posts an ECB that the receiver can wait on. The receiver can then call CNMNETM using a receiver function to obtain the next data buffer.

Note: Data is not directly moved from sender to receiver. The buffering allows the sender or receiver to run asynchronously.