Opengear ACM5000, User Manual

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Connectivity, TCP Ports & Serial I/O
316
Console Server & RIM Gateway User Manual
RS232 Standard Pinouts
The RS232 pinout standards for the DB9 (and DB25) connectors are tabled below:
DB25 SIGNAL DB9 DEFINITION
1 Protective Ground
2 TXD 3 Transmitted Data
3 RXD 2 Received Data
4 RTS 7 Request To Send
5 CTS 8 Clear To Send
6 DSR 6 Data Set Ready
7 GND 5 Signal Ground
8 CD 1 Received Line Signal Detector
9 Reserved for data set testing
10 Reserved for data set testing
11 Unassigned
12 SCF Secondary Rcvd Line Signal Detector
13 SCB Secondary Clear to Send
14 SBA Secondary Transmitted Data
15 DB Transmission Signal Timing
16 SBB Secondary Received Data
17 DD Receiver Signal Element Timing
18 Unassigned
19 SCA Secondary Request to Send
20 DTR 4 Data Terminal Ready
21 CG Signal Quality Detector
22 9 Ring Indicator
23 CH/CI Data Signal Rate Selector
24 DA Transmit Signal Element Timing
25 Unassigned
FEMALE MALE
25 pin DB25
9 pin DB9
8 pin RJ45