Troubleshooting and Maintenance
5-34
9161-A2-GH30-20
September 1997
APM Insertion
Insertion of an APM into a housing occurs under one of the following three
conditions.
If the slot previously . . .
Then . . .
Was unassigned
The configuration options for this new APM will be set to
factory defaults and will be accessible from the MIB and the
async terminal.
Contained the same type
of APM
The existing configuration options will be used and will be
accessible from the MIB and the async terminal.
Contained a different type
of APM
The system will generate a Module Misconfiguration alarm
and trap for the selected slot. The screens and field choices
applicable to this APM will not be displayed until you accept
the APM upon loading or saving a configuration, or via an
enterprise MIB. When you accept the new APM, the
previous APM’s configuration is deleted, the new APM’s
configuration options are set to factory defaults, and the
screens and field choices applicable to the new APM will be
displayed.
If you reject the APM, the configuration options for the
previous APM can be edited, but all other configuration
options and screens will not display fields or choices or MIB
objects applicable to either the previous or the current APM.
APM Removal
When you remove an APM from its slot, you can still edit the applicable
configuration options. If you are displaying a Status or Test screen when you
remove an APM,
The message APM Removed will display after the screen is refreshed and
all fields relating to the APM will be cleared
Only the ESC (Previous menu), Main Menu, and Exit virtual functions will be
available when no other valid slots are available to select
MIB objects applicable to the removed APM, and attempts to do a get or set
of those objects will display the message No Such Name
NAM Removal
Although you can safely remove the T1 NAM from the housing with power on, the
T1 access unit does not support hot swapping of the T1 NAM. All APM
configurations travel with the NAM.