 The most common application for ISO-TP is the transfer of diagnostic messages with OBD-2 equipped vehicles using KWP2000 and UDS, but is used broadly in other application-specific CAN implementations.ISO-TP can be operated with its own addressing as so-called "Extended Addressing" or without address using only the CAN ID (so-called "Normal Addressing").Extended addressing uses the first data byte of each frame as an additional element of the address, reducing the application payload by one byte.