Systems Network Architecture Considerations (SNA) › Changing Direction: Send to Receive

Changing Direction: Send to Receive

PREPARE_TO_RECEIVE

Your program can change from the send state to the receive state in either of the following ways:

• Implicitly, by issuing any type of read request (#TREQ READ, GET, WRITREAD, PUTGET). CA IDMS/DC automatically sends a change-direction indicator to the remote system before it issues the read request.
• Explicitly, by using the OPTNS=INVITE parameter on any write request.

The change-direction indicator is sent with data for all #TREQ PUTGET and WRITREAD requests, and without data for all GET and READ requests.

Your program must specify the LTE address of the remote LU (UIOLTEA) to identify the conversation.