# Customizing a Console Interface

Substation ES enables administration and operational staff to communicate with an active system through the console of a z/OS operator.

You can select a site-standard facility by specifying an appropriate value for the `CONSOLE-MSG SIP` keyword in the Substation ES master member. The value of the `CONSOLE-MSG SIP` keyword is either C (C=Console) or L (L=Log, default value). For details, see the TIBCO Substation ES Operations and Administration manual.

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