Db-9 Port Pin Assignments; Console Port To 9-Pin Com Port On Pc - SMC Networks TigerSwitch 100 SMC6924VF Management Manual

P A
IN SSIGNMENTS

DB-9 Port Pin Assignments

EIA CCITT
Circuit Signal
CF 109 DCD (Data Carrier Detected) 1
BB 104 RxD (Received Data)
BA 103 TxD (Transmitted Data)
CD 108.2 DTR (Data Terminal Ready)
AB 102 SG (Signal Ground)
CC 107 DSR (Data Set Ready)
CA 105 RTS (Request-to-Send)
CB 106 CTS (Clear-to-Send)
CE 125 RI (Ring Indicator)

Console Port to 9-Pin COM Port on PC

Switch's 9-Pin
Serial Port
1 DCD
2 RXD
3 TXD
4 DTR
5 SGND
6 DSR
7 RTS
8 CTS
9 RI
Console Port to 25-Pin DCE Port on Modem
Switch's 9-Pin
Serial Port
B-2
Description
CCITT Signal
----------- DCD ------------
<--------- TXD ------------
----------- RXD ---------->
----------- DSR ---------->
----------- SGND ----------
----------- DTR ------------
----------- CTS ----------->
<--------- RTS -------------
----------- RI ---------------
CCITT Signal
1 <--------- DCD ------------
2 <--------- RXD ------------
3 ----------- TXD ---------->
4 ----------- DTR ---------->
5 ----------- SGND ----------
6 <--------- DSR ------------
7 ----------- RTS ----------->
8 <--------- CTS -------------
9 <--------- RI ---------------
Switch's PC DB9
DB9 DTE DTE
Pin # Pin #
1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
PC's 9-Pin
COM Port
1
3
2
6
5
4
8
7
9
Modem's 25-Pin
DCE Port
8
3
2
20
7
6
4
5
22
Modem Signal
DB25 Direction
DCE Pin # DTE-DCE
8 <------
3 <------
2 ------>
20 ------>
7 -------
6 <------
4 ------>
5 <------
22 <------