Fast EtherHub 3500 System User’s Guide
Pin Assignments B-5
Hub’s 9-Pin Serial Port to Modem's 25-Pin DCE Port Hub’s 9-Pin Modem's 25-Pin
Serial Port DCE Port
1 < ---------- DCD ---------- 8
2 < ---------- RXD ---------- 3
3 ------------ TXD -------- > 2
4 ------------ DTR -------- > 20
5 ----------- SGND --------- 7
6 < ---------- DSR ---------- 6
7 ------------ RTS -------- > 4
8 < --------- CTS ----------- 5
9 < ----------- RI ------------ 22
Table B.7 Hub’s 9-Pin Serial Port to
Modem's 25-Pin DCE Port Pin Assignments