Defining terminals for ISC TCP/IP connections
Although both dynamically defined and statically defined ISC terminals can use TCP/IP, if you are defining new terminals, use dynamic terminals. Dynamic terminals do not require a system definition or a cold start of IMS and provide greater flexibility than static ISC terminals.
Dynamic ISC terminals are defined by coding logon descriptors in either the DFSDSCMx or the DFSDSCTy members of the IMS.PROCLIB data set.
- The connection can be initiated or terminated via IMS commands.
- Session status can be displayed via IMS commands.
- Input and output messages can be transported via either static or dynamic terminal.
An important aspect in which static and dynamic terminals differ is that static terminals must be defined with IMS stage 1 system definition macros and require a restart of IMS, whereas dynamic terminals are created during runtime as needed by using terminal attributes that are defined by Extended Terminal Option (ETO) logon descriptor in the IMS.PROCLIB data set.