Beta Draft Confidential
Cables and Pinout Assignments
RS-232 DB-9 to DB-25 Shielded Crossover Cable
B-6
4/5/03
CBX 500 Multiservice WAN Switch Hardware Installation Guide
RS-232 DB-9 to DB-25 Shielded Crossover Cable
Table B-3.
RS-232 DB-9 to DB-25 Shielded Crossover-Cable Pinouts
DB-9 Female Connector #1
DB-25 Female Connector #2
Pin
Signal
Pin
Signal
2
RX (Receive)
2
TX (Transmit)
3
TX (Transmit)
3
RX (Receive)
5
GND (Signal Ground)
7
GND (Signal Ground)
DB-9 Female Connector #1
DB-9 Female Connector #1
Pin
Signal
Pin
Signal
1
DCD (Data Carrier
Detect)
4
DTR (Data Terminal
Ready)
4
DTR (Data Terminal
Ready)
6
DSR (Data Set Ready)
7
RTS (Request To Send)
8
CTS (Clear To Send)
DB-25 Female Connector #2
DB-25 Female Connector #2
Pin
Signal
Pin
Signal
4
RTS (Request To Send)
5
CTS (Clear To Send)
6
DSR (Data Set Ready)
8
DCD (Data Carrier
Detect)
8
DCD (Data Carrier
Detect)
20
DTR (Data Terminal
Ready)