QSFP-DD is a new module and cage/connector system similar to current QSFP, but with an additional row of contacts providing for an eight lane electrical interface. It is being developed by the QSFP-DD MSA as a key part of the industry's effort to enable high-speed solutions. The Cisco 400GBASE Quad Small Form-Factor Pluggable Double Density (QSFP-DD) portfolio offers customers a wide variety. The QSFP-DD OLS is a pluggable open line system solution that can be directly hosted on a Cisco router. The Cisco ® QSFP-DD Open Line System (QSFP-DD OLS) is a pluggable optical amplifier module that, together with the channel breakout options (described later), provides a simple yet powerful open. QSFP-DD (quad small form-factor pluggable double density) doubles the capacity of QSFP interconnects with an eight-lane electrical interface capable of 28 Gbps NRZ, 56 Gbps PAM4, and 112 Gbps PAM4 to achieve up to 800 Gbps per port. Customers can upgrade their box in advance of new cables. InnoLight 100G OpenZR+ QSFP-DD product family is designed based on dual polarization quadrature phase shift keying (DP-QPSK), supporting extended C-band, polarization diversity coherent detection and advanced electronic link equalization. The product supports 100Gbps transmission speeds in an.