Terminal Types

There are two basic types of terminals that can connect to IMS:

Static

A static terminal is specifically defined in the IMS system definition, and the definition determines the physical terminal name (called the node name) and logical terminal name (LTERM) available for use.

Dynamic

A dynamic terminal is not statically defined in the IMS system definition. IMS can create a dynamic terminal definition. This requires either the IMS Extended Terminal Option (ETO), a separately ordered feature of IMS, or other third-party vendor products. Dynamic terminals have not been previously defined to IMStheir definitions are generated by ETO when the user logs on.

If a terminal user attempts to connect to IMS using a terminal that is defined to IMS as static, then the user will use the defined node name and LTERM name combination.

If a terminal user attempts to connect to IMS using a terminal that is not defined to IMS as static, and dynamic terminal support is available, then a dynamic terminal product (such as ETO) is used to determine the LTERM name and whether the name is based on the user's user ID, the node name, or some other value.

If a terminal user attempts to connect to IMS using a terminal that is not defined to IMS as static, and dynamic terminal support is not enabled, then the user is unable to logon to IMS.