What's the difference?

CheckIt: Name Pin Pin Name

CD    1    6    DSR 
CD    1    9    RI 

RXD 2 3 TXD DTR 4 6 DSR RTS 7 8 CTS

Nortel: Name

            Pin  Pin  Pin  Pin

Jumpering1 2 3 Jumpering2 7 8 Jumpering3 1 4 6 9

CheckIt connect: 2 with 3 => Nortel Jumpering1 7 with 8 => Nortel Jumpering2 and 1 with 6 and 9 and then 6 with 4. This is the same as 1 with 4 this 6 this 9 => Nortel Jumpering3 Or not?