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Common Format Buffer Packaging

The third TCP/IP communication style concerns how the Common Format Buffer data is delivered to the target server. There are two choices, wrapped for IMS support or unwrapped.

Communications to z/OS IMS TCP/IP Direct Connect require the CFB to be wrapped inside of IMS header data before it is sent to the IMS target server environment. Only z/OS IMS Direct Connect has this requirement. All the other TCP/IP target server environments require a normal or non-wrapped CFB.