X25AM Configuration and Management Manual

SCF Commands for the X25AM Subsystem
X25AM Configuration and Management Manual—523424-004
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How SCF Works
You can use the HELP command to display a list of the available SCF commands and
to request additional specific information, such as command syntax.
Commands that operate on the X25AM subsystem objects are described in this
section. Commands such as OUT, ASSUME, and HELP are not subsystem-specific
and are described in the SCF Reference Manual for G-Series RVUs or SCF Reference
Manual for H-Series RVUs.
How SCF Works
SCF performs most commands in the following sequence:
1. When SCF receives a command, it interprets the command and executes it. SCF
can handle some commands without interaction with SCP (for example, OUT).
2. If the command involves control or configuration of a subsystem object or a
request for information about an object, SCF produces a message that describes
the object and the operation. This message passes to an X25AM process through
SCP.
3. After the X25AM process has processed the message, it returns a completion
message (one or more messages, if the command is a request for information
about an object) to SCF through SCP. SCF displays the requested information, if
any, and then displays its prompt and waits for the next command. If the
completion message indicates an error condition, SCF displays an appropriate
message and then displays its prompt.
Running SCF
SCF resides in the file $SYSTEM.SYSTEM.SCF. To start SCF, use the RUN
command. For more information about the syntax of the RUN command, see the SCF
Reference Manual for G-Series RVUs or SCF Reference Manual for H-Series RVUs.
Input Sources and Output Destinations
SCF accepts command input from a terminal or a disk file; it directs output to a disk
file, an application process, a terminal, or a printer. The RUN command that initiates
SCF determines the initial input source and output destination.
When an SCF line is active, you can change both the source and the destination
temporarily. For information about how to set the initial input source and output
destination and how to change them, see the SCF Reference Manual for G-Series
RVUs or SCF Reference Manual for H-Series RVUs.