ABSTRACT: This Implementation Agreement specifies key aspects and electro-optical-mechanical details of a 3. 2Tb/s Co-Packaged Module encompassing optical and copper cable attach formats. Notice: This Technical Document has been created by the Optical Internetworking Forum (OIF). Last updated on Apr 29, 2026 MSA (Multi-Source Agreement) standards define the mechanical, electrical, and management interfaces of optical transceivers, enabling multi-vendor interoperability, supply chain flexibility, and large-scale network deployment. Understanding MSA is critical for compatibility validation, cost. The QSFP28 optical transceiver module is designed for use in 100GBASE Ethernet throughput up to 100km over single mode fiber (SMF) using a wavelength of 1310nm via duplex LC connectors. Cisco® QSFP-DD and OSFP 800G ZR/ZR+ coherent optics modules enable 800G traffic over. InnoLight's 100G QSFP28 LR4 transceivers are based on DFB laser. These products feature four channels of 25G NRZ electrical signals and four channels of 25G NRZ optical signals, a duplex LC connector, a distance of up to 10km reach via single-mode fiber, a case temperature range of 0°C~70°C, and. Optical internetworks are data networks composed of routers and data switches interconnected by optical networking elements.