Keep long-haul optical links within design targets with Cisco DCF OF -1150 psnm and 8 dB loss. This transport-focused offering is specified for dispersion compensation planning in service-provider networks where link engineering, reach, and signal integrity must stay tightly controlled. By aligning to a defined dispersion compensation profile, it helps network teams preserve optical performance across demanding routes without introducing guesswork into the design. That matters when the cost of a marginal link is measured in truck rolls, delayed turn-ups, and reduced margin across the transport layer. Cisco positions this item for environments that require disciplined optical engineering rather than generic connectivity. It fits procurement decisions where the requirement is not simply to add capacity, but to protect the integrity of the optical path and keep the network ready for higher-value transport services. For teams standardizing on Cisco transport infrastructure, this part supports a more exacting approach to optical planning and lifecycle consistency.