Cisco VCO/4K Mechanical Assemblies page 49

Table 2: Serial Port 4 Pin and Signal Assignments
Pin Signal Name
2 TxD
3 RxD
4 RTS
5 CTS
6 DSR
7 GND
8 DCD
15 RTxC
17 RRxC
20 DTR
24 TTxC
a
All pins not identified are no-connection
Description/Direction
Transmit Data
(terminal to modem)
Receive Data
(modem to terminal)
Request to Send
(terminal to modem)
Clear to Send
(modem to terminal)
Data Set Ready
(modem to terminal)
Chassis Ground
Data Carrier Detect
(modem to terminal)
Tx Clock to output data
(terminal to modem)
Rx Clock to input data
(terminal to modem)
Data Terminal Ready
(terminal to modem)
Tx Clock to output data
(terminal to modem)
Storage/Control I/O Module 1-9
Description
a