Cisco CE 2000 Platform SCE 2000 4xGBE Installation And Configuration Manual page 146

Installing the External Bypass Module
Bypass module is now active (in bypass), and is performing a loopback on these interfaces.
Step 6
The SCE 2000 platform immediately starts providing power to the External Optical Bypass module, so the
bypass module becomes inactive, and starts transferring the traffic to the SCE 2000 platform. The "No
Bypass" LED should therefore be lit.
The figure below illustrates the connections between a SCE 2000 platform and two External
Optical Bypass modules.
SCE 2000 4xGBE Installation and Configuration Guide
A-8
Connect the control cable (supplied in the kit) from the Bypass 9-pin D-Type connector
on the rear panel of the SCE 2000 platform to the Control connector on the External
Optical Bypass module.
Appendix A The External Optical Bypass Module
OL-7824-02