Specifications

Table Of Contents

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

Figure 1-11.

• Two independent links, as shown in Figure 1-12. 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

Modem

KML A

KML B

KML A

KML B

I/O Modules

Figure 1-11. Dual Link, High Capacity Point-to-Point Application