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Chapter 3
Connecting the Cisco ONS 15540 ESPx
Interconnecting Mux/Demux Modules
Step 1
Step 2
Connecting PSMs
Warning
Note
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For mux/demux interconnections, use jumper cables to daisy chain the modules
together and follow these steps:
Insert one end of the cable in the third from the top connector on the module.
Install the other end of the cable to the top connector of the mux/demux module
installed directly below that module.
The PSM (protection switch module) is a shelf replaceable unit, that plugs into
any subslot in the mux/demux module. The unit has a front panel set of MU
connectors that interface with the trunk fiber in a 1+1 protection scheme. The
backside of the module provides an edge connector card, which interfaces with
the mux/demux motherboard. The PSM can be connected to the mux/demux
module or using a cross-connect drawer direct connections can be made from the
ITU trunk cards, the 2.5-Gbps transponder module, or the 10-Gbps uplink card.
To install fiber optic cables in the Cisco ONS 15540 ESPx, a fiber cable with the
corresponding connector type must be connected to the transmit and receive ports
on the modules. We recommend that you label the transmit, receive, and the
working and protection fibers at each end of the fiber span to avoid confusion with
cables that are similar in appearance. Labels are shipped with the system.
Invisible laser radiation may be emitted from the end of the fiber or connector.
Do not stare into the beam or view directly with optical instruments.
Clean all fiber connectors thoroughly. Dust particles can degrade performance.
Put caps on any fiber connectors that are not in use.
Cisco ONS 15540 ESPx Hardware Installation Guide
Connecting PSMs
3-9
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