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3162-A2-GB20-40
August 2000
Changing Configuration Options
The DSU/CSU is an intelligent device that displays only valid options for the
current configuration. Therefore, you are only presented with menu choices that
are consistent with the current configuration and operational state of the
DSU/CSU; invalid combinations of configuration options do not appear. For
example, if the DTE Drop/Insert (DSX-1) interface selection is disabled, many of
the menu choices do not appear.
The DSU/CSU offers configuration options located in the following memory areas:
H Current. This is the configuration option set currently active for the DSU/CSU
is stored here. Before a configuration option set becomes active for the
DSU/CSU, you must save the set to the Current area. When the DSU/CSU is
shipped from the factory, the Current configuration option set is identical to
the Default Factory set. This area can be written to and controls the current
operation of the device.
H Customer 1. This is the first of two sets of customer-defined configuration
options. This area can be written to.
H Customer 2. This is the second of two sets of customer-defined configuration
options. This area can be written to.
H Default Factory 1. This is a set of configuration options preset at the factory.
This set is determined by what is considered to be the most common
configuration used in the DSU/CSU market. Default Factory 1 options are
read-only.
H Default Factory 2. This is a set of configuration options preset at the factory.
This set is determined by what is considered to be the second most common
configuration used in the DSU/CSU market. Default Factory 2 options are
read-only.
The configuration options are divided into functional groups. Appendix C,
Configuration Options, contains a list of the configuration options and defaults.
The DSU/CSU arrives with two preset factory default configuration settings.
These settings are based on the following:
H Default Factory 1 – ESF framing format with B8ZS line coding format for
both the network and the DTE Drop/Insert (DSX-1) interfaces. Data ports are
unassigned.
H Default Factory 2 – D4 framing format with AMI line coding format for both
the network and the DTE Drop/Insert (DSX-1) interfaces. Data ports are
unassigned.
If neither of the factory default settings support your network’s configuration, you
can customize the configuration options to better suit your application.
Use the Configuration branch of the menu tree to display or change DSU/CSU
configuration options (see Appendix C, Configuration Options).