InterSwitch Trunk is a Payments company based in Nigeria. In the directory it is listed under Payments in Nigeria. The official website is interswitch.nl.
About InterSwitch Trunk
InterSwitch Trunk (IST) is one or more parallel point-to-point links that connect two switches together to create a single logical switch. The IST allows the two switches to share addressing information, forwarding tables, and state information, permitting rapid fault detection and forwarding path modification. The link may have different names depending on the vendor. For example, Brocade calls this an Inter-Chassis Link (ICL). Cisco calls this a VSL.