SMC Networks Barricade SMC7004AWBR - Manual (Page 84)

C
ABLES
B-4
Serial Port Pin Assignments
The DB-9 serial port on the rear panel is used to connect the
Wireless Barricade to an ISDN TA or PSTN modem. The pin
assignments used to connect to this port are provided in the
following tables.
Figure B-2. DB-9 Serial Port Pin Numbers
DB-9 Port Pin Assignments
EIA
Circuit
CCITT
Signal Description Gateway’s
DB9 DTE
Pin #
PC DB9
DTE
Pin #
Modem
DB25
DCE Pin #
Signal
Direction
DTE-DCE
CF 109 DCD (Data Carrier Detected) 1 1 8 <------
BB 104 RxD (Received Data) 2 2 3 <------
BA 103 TxD (Transmitted Data) 3 3 2 ------>
CD 108.2 DTR (Data Terminal Ready) 4 4 20 ------>
AB 102 SG (Signal Ground) 5 5 7 -------
CC 107 DSR (Data Set Ready) 6 6 6 <------
CA 105 RTS (Request-to-Send) 7 7 4 ------>
CB 106 CTS (Clear-to-Send) 8 8 5 <------
CE 125 RI (Ring Indicator) 9 9 22 <------