VALUES API In addition to the official Graphical User Interface (GUI), USFE provides access to the open interface VALUES API for both members and Independent Software Vendors (ISV) for their own services and applications. VALUES API programming guides, header files, etc. are available in the Member Section. Connection Alternatives To meet our customers' expectations in terms of innovative, reliable and cost-effective technology, we offer different connection types. Members can be connected via dedicated leased lines and/or internet connections and may use a combination of these connection types. For a leased line connection, a back-up connection is required. Members can access the exchange via a standard bandwidth of 256 kb. Internet connections will need to be ordered and administered individually by each member. For assistance, please contact a member of the Member Services team. For technical forms, please click here