Cisco GS7000 Installation And Operation Manual page 199

Enhanced Digital Return (EDR) System Installation
5. Proceed to next section for installation.
The following diagram shows the OPM module installed on the 1:1 transmitter
module.
The following diagram shows the OPM module installed on the 2:1 transmitter
module.
CAUTION:
Removing and installing an OPM module can shorten its useful life. Do not
remove and insert OPM modules more often than is absolutely necessary.
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