Chapter 1 General Information
MX-2100/2104
Installation and Operation Manual
1-22 Application Considerations
When redundancy is enabled, the redundant KML module is automatically
programmed exactly like the primary, but its bus is electrically disconnected from
the other modules installed in the enclosure. If the primary KML module (or its
communication) fails, the other modules are disconnected from the bus of the
failed module and connected to the bus of the redundant KML module, which
then takes over.
The operator of the MX-2100 unit can select the primary (active) KML module,
e.g., in order to switch back to the preferred link after redundancy switching has
occurred. This arrangement provides redundancy at both the module and the link
level.
Dual Link Operation (not for MX-2104)
Basic Dual-Link Configurations
As an option, MX-2100 allows independent operation of its two multiplexing
subsystems. Therefore, by connecting two main links to one MX-2100 equipped
with two KML modules it is possible to double the number of payload time slots.
Two dual-link topologies are possible:
•
High capacity point-to-point link. A typical system configuration is shown in
•
Two independent links, as shown in
. The two links can operate at
different data rates.
Modules installed in the enclosure can be freely connected to either of the two
links, the only restriction being that all the subchannels of a given module must be
assigned to the same link.
MX-2100
MX-2100
Modem
Modem
Modem
Modem
Modem
Modem
KML A
KML B
KML A
KML B
I/
O
M
odul
es
I/
O
M
odul
es
Figure 1-11. Dual Link, High Capacity Point-to-Point Application
