Enterasys R1 SOHO, Setup And Installation Manual

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A-5
Serial Port to 9-Pin COM Port on PC
Serial Port to 25-Pin DCE Port on Modem
RoamAbout R1’s
9-Pin Serial Port CCITT Signal PC’s 9-Pin COM Port
1 DCD -----------DCD ------------ 1
2 RXD <---------TXD ------------ 3
3 TXD -----------RXD ----------> 2
4 DTR -----------DSR ----------> 6
5 SGND -----------SGND ---------- 5
6 DSR -----------DTR ------------ 4
7 RTS -----------CTS -----------> 8
8 CTS <---------RTS ------------- 7
9 RI -----------RI --------------- 9
RoamAbout R1’s
9-Pin Serial Port CCITT Signal Modem’s 25-Pin 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