DFHZIS2
DFHZIS2 is the CICS intersystem program that provides services for CICS system code that uses intersystem or interregion (IRC) function requests, such as:
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RECEIVE, invoked when DFHCRNP gets input data as a result of a 'switch first' SVC request.
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IOR, the IRC input/output routine, which interfaces with the IRC SVC to send data to the other end of the connection, or await data from there.
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GETDATA fetches input data into a TIOA
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DISCONNECT disconnects a given IRC link
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STOP quiets inter-region activity, either for connections to a given system, or for the whole of IRC
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LOGOFF issues a logoff request to the IRC SVC, this completes IRC activity for this CICS system
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OPERATIVE allows connections to be made to a given system
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RECABRT - processes input 'abort' FMHs (FMH 07)
Reference Sources
CICS/ESA Version 3.1.1, Diagnosis Reference, LY33-6072-0, June 1990.