Beta Draft Confidential
Cables and Pinout Assignments
RS-232 DB-9 to DB-25 Shielded Crossover Cable
B-64/5/03 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)
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