Cisco Cisco XR 12000 12000 1-Port OC-48c STM-16c POS SDH ISE Line Card

Before you remove or install an SFP module, read the installation information in this section and the 

POS line cards use various optics and connectors. See the 

 for optics and cabling specifications. 

Before removing SFP modules, you must first disconnect any connected interface cables. See the 

Protect the SFP modules by inserting clean dust covers into them after the cables are removed. Be sure 
to clean the optic surfaces of the fiber cables before you plug them back into the optical ports of another 
SFP module. Avoid getting dust and other contaminants into the optical ports of your SFP modules: The 
optics will not work correctly when obstructed with dust.

Removing and inserting an SFP module can shorten its useful life, so remove and insert them only when 
absolutely necessary.

SFP modules use one of four different latching devices to install and remove the module from a port. 
The four types of SFP module latching devices are described in the following sections:

The bale clasp SFP module has a clasp that you use to remove or install the SFP module. (See 

Figure 23

.)

To remove this type of SFP module, follow these steps:

Attach an ESD-preventive wrist or ankle strap and follow its instructions for use.

Disconnect and remove all interface cables from the ports; note the current connections of the cables to 
the ports on the line card. 

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