Both optical transceiver devices are «standardized» by Multi-Source Agreements (MSAs) and Small Form-Factor Pluggable,Enhanced (SFP+)[ii]. These documents define rigorously sufficient properties of an optical transceiver to enable system providers (e.g. B Ethernet switch, routers and media converters) to implant ports on their devices so that the connectable optical transceivers (SFP or SFP+) compliant with the MSA work properly by each provider. In other words, transceivers can be purchased by one of the different free market sources like FluxLight. Like most standard efforts, MSAs are important first because they can give customers the choice between suppliers from whom they buy products. Freedom of choice is the basis for the proper functioning of markets. Customers in the market should have the advantage of several independent suppliers, each competing for market share. This behavior forces suppliers to be as efficient and creative as possible, reduce costs and offer customers the widest range of options. MSAs define parameters for system components and their reference values, such as.B. mechanical dimensions, electrical and optical interfaces, and electromagnetic values. Device manufacturers rely on MSAs to develop their systems. This ensures interoperability and interchangeability between interface modules. Products that comply with multi-source agreements include: optical transceivers such as SFP, SFP+, XENPAK, QSFP, XFP, CFP, etc.; fibre optic cables; and other network equipment.
Some important multi-source agreements for optical receivers are listed in the following table: the main elements or characteristics defined in SFP/SFP+MSA are as follows: a multi-source agreement (MSA) is an agreement between several manufacturers in order to develop compatible products between suppliers, which act as de facto standards and create a competitive market for compatible products. . ITU standards (so-called «recommendations») are essential for the functioning of modern ICT networks. Without standards, you can`t call or access the Internet. With regard to internet access, transport protocols, voice and image compression, home networks and many other ICT components, hundreds of ITU standards enable systems to operate locally and globally. [iii] SFF Committee, SFF-8472 Specification for Diagnostic Monitoring Interface for Optical Transceivers, Rev 11.0, 14. September 2010. [i] SFF Committee (2001-05-01), INF-8074i Specification for the SFP (Small Formfactor Pluggable) transceiver, abgerufen am 12.08.2012. . . .