Which RTS interface? URTSI or URTSII?

If using the URTSII pin 3 of the MSC to pin 3 of the RTS, Pin 2 of the MSC to pin 6 of the RTS and pin 5 of the MSC to pins 7&8 of the RTS for straight through, for null or crossover, flip pins 2 and 3 of the MSC.