Implementation agreements are based on requirements developed and expanded by end-users, service providers, equipment manufacturers and technology providers, in accordance with global standards. This goal is achieved through the collaboration of industry members working together to develop specifications for external network interfaces, internal software interfaces for network elements and hardware component interfaces for network elements. The Optical Internetworking Forum (OIF) is a leading non-profit consortium that was established in 1998. It encourages the development and supply of interoperable computer network products and services through implementation agreements (IAs) for network optical products and component technologies, including SerDes devices. At the Optical Fiber conference in 2015, 2016 and 2017, implementations in accordance with the CEI-56G-IAs project were demonstrated.  In March 2020, the OIF released the 400ZR Coherent Optical Module Interoperability Agreement. This AI defines a coherent optical module that can be used either by 120 km of reinforced DWDM channels or by shorter, unre reinforced DWDM channels.  Two previous generations on this development path were defined by some of the same people at the ATM forum in 1994 and 1995. These specifications have been called UTOPIA 1 and 2 levels. These worked with 25 Mbps (0.025 Gbps) and 50 Mbps per single wire tip and were used in OC-3 applications (155 Mbps).  PL-3 was an extension of cell packets carried by these earlier interfaces. The OIF`s Working Group on Architecture and Signalling has identified important early interfaces in the development of software-defined networks or SDNs. These interfaces are uni, User Network Interface and NNI, Network to Network Interface Interoperability Agreements.
These have enabled data transmission data networks to respond in real time to users` login needs and to provide bandwidth at times when there are no traditional deployment methods, which could provide bandwidth after a week. . The Common Electrical I/O (CEI) refers to a number of influence interoperability agreements (IAs) published by the OIF (Forum optical on the internet). CEI defines electrical and jitter requirements for electrical interfaces 3.125, 6, 11, 25-28 and 56 Gbps. The Gearbox Multi-Link (MLG) IA supports a configuration that connects to multiple slower physical interfaces via a single interface at a higher speed. A new style of electrical interface specially designed for coherent modules has been defined. This will replace the digital interface that modules typically have with an analog interface. This allows a large and electricity-consuming digital signal processor to be placed on the larger map and the coherent optical module has only analog components. This AI uses a CFP2 module.
The first ACO IA interface for the CFP2 form factor was released in January 2016. The OIF released the more general ACO IA in May 2018.  For both the 100G generation and the 400G generation, the OIF has developed framework documents that allow industry players to map together the faAs and other aspects that should be developed by the industry. In both cases, white papers were written on specific aspects. The OIF says it provides for future clauses in a future version of CIS 4.1. . . Over the years, the OIF has organized numerous interoperability events, usually at the Optical Fiber Conference (OFC) and/or ECOC. Recent demonstrations included cooperation between different vendors for several CEI-56G scopes, CEI-112G VSR connections, the CFP2-ACO and FlexE interfaces.   The OIF has produced several generations of voting laser IAas, including the Micro Integrable Tunable Laser Assembly and the Multi-Source Accord of the Tunable Integrated Laser Assembly.