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Installing the main distribution frame
20 Installing and Connecting the MDF and Telephones
Main distribution frame labels
Figure 4: Label graphic symbols and nomenclature on page 20 shows the graphic symbols
used on labels for the media gateways, cross-connections, information outlets, and cables. The
labels are color-coded to identify media gateway wiring:
● Green — To central office (CO)
● Purple — To media gateway ports
● Yellow — To auxiliary equipment and miscellaneous media gateway leads
● Blue — To information outlets
● White — From MDF to satellite locations (3-pair)
Each label identifies two rows on the terminal block. The upper half identifies the row above it
and the lower half identifies the row below it. The labels are inserted into the clear plastic
designation strips furnished with the terminal blocks. The strip is snapped in place between the
terminal block rows. Label code number 1220A (comcode 103970000) contains all of the
required labels.
Figure 4: Label graphic symbols and nomenclature
Figure notes:
1. Floor or Building Identification (write as
required
2. Media Gateway
3. Carrier (leave blank for G600 Media
Gateway)
4. Slot
5. Information Outlet
6. Site/Satellite Closet
7. Tie Circuit
8. Floor
9. Building
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