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Overview of ETA

ETA replaces or complements the Extended Terminal Option (ETO) feature available with IMS. ETA’s online interface and dynamic change capabilities allow you to customize ETO systems more quickly, eliminate IMS restarts for system customization changes, and provide a central repository for customization information.

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Introduction to ETA

ETA allows you to customize your ETO systems by using a CUA-compliant ISPF interface. Communication from ISPF and batch to the IMS control region(s) is provided through a started task called BMCXLINK. Communications between ISPF, batch, and BMCXLINK use VTAM communications. Communications between BMCXLINK and the IMS control regions use the cross-system coupling facility (XCF). Therefore, ISPF and BMCXLINK do not have to reside on the same MVS image. The ETA code in the IMS control region dynamically changes the applicable IMS and ETO parameters, making the customizations immediately available for use in the creation of dynamic terminals and printers.

The following figure shows how one ETA session can be used to customize multiple ETO systems even if the ETO systems are located on different MVS systems.

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BMC AMI Extended Terminal Assist for IMS 3.8