About the T1 Access Mux
1-5
9161-A2-GH30-20
September 1997
Features
The T1 access unit offers the following features:
Upgradability. There are two housings to select from: 2-slot and 5-slot. You
can start with a 2-slot housing, and move your NAM and APM to a 5-slot
housing at a later time.
— The 2-slot housing holds one NAM and APM pair.
— The 5-slot housing holds one NAM and up to four APMs, allowing
expansion capability as your network needs grow.
— As you need additional DTE or voice ports for your network applications,
you can add APMs.
Modular Design. Any NAM or APM can be physically removed from one
housing and moved to another.
Hot Swapping. Provides the ability to insert and remove APMs without
powering-down the housing, and without having to reconfigure the cards
each time they are moved.
The APM configurations travel with the NAM. When an APM is inserted or
removed, the NAM senses that an APM has been inserted or removed, and
can automatically make the appropriate changes to screens, configuration
options, and MIB objects.
— When an APM is inserted in a previously unassigned slot, the T1 access
unit configures the APM using the factory default configuration.
— When the same type of APM is inserted into a previously assigned slot,
the T1 access unit uses the configuration for the APM that previously
occupied the slot; the APM does not have to be reconfigured.
— When another type of APM is inserted into a previously assigned slot, an
alarm and trap are generated for the slot. If accepted, the factory default
configuration is loaded for the new APM type; if rejected, the new APM is
ignored and the previous configuration is retained.
The NAM can be removed without powering down the unit; however, all
system functionality is lost. When a NAM is removed and inserted into
another housing, it applies the NAM’s configurations from the previous
housing to the current housing.
— If the NAM is moved from a 2-slot housing to a 5-slot housing, the
operator can use the configuration of the APM in slot 02 of the previous
housing. APMs in slots 03 – 05 will be configured with the factory default
settings.
— If the NAM is moved from a 5-slot housing to a 2-slot housing, the factory
default configuration options are loaded.
