Beta Draft Confidential
Cables and Pinout Assignments
RS-232 Shielded Null-Modem Cable
B-2
4/5/03
CBX 500 Multiservice WAN Switch Hardware Installation Guide
RS-232 Shielded Null-Modem Cable
Table B-1.
RS-232 Shielded Null-Modem Cable Pinouts
RS-232 Male
Connector #1
Pin Number
RS-232 Male
Connector #1
Signal
RS-232 Female
Connector #2
Pin Number
RS-232 Female
Connector #2
Signal
7
Signal Ground
7
Signal Ground
3
Receive Data
2
Transmit Data
2
Transmit Data
3
Receive Data
DB-25 Male
Connector #1
Pin Number
DB-25 Male
Connector #1
Signal
DB-25 Male
Connector #1
Pin Number
DB-25 Male
Connector #1
Signal
20
Data Terminal Ready
8
Data Carrier Detect
8
Data Carrier Detect
6
Data Set Ready
5
Clear To Send
4
Request To Send
DB-25 Female
Connector #2
Pin Number
DB-25 Female
Connector #2
Signal
DB-25 Female
Connector #2
Pin Number
DB-25 Female
Connector #2
Signal
20
Data Terminal Ready
8
Data Carrier Detect
8
Data Carrier Detect
6
Data Set Ready
5
Clear To Send
4
Request To Send