Many of their clients are in their own right International OEM manufacturers of Call Recording equipment. OptiLogix offers a wide range of “passive tap” Voice Recording interfaces for both analog and digital extensions, as well as for BRI (ISDN-2), E1/T1 (PRI-ISDN) and SIP. As OptiLogix has a 100% focus on hardware for Call- and Voice Recording, the product portfolio available is the broadest in the industry and includes USB, PCI, PCI Express and LAN compatible products all covering the extensive range of TDM telco interfaces.