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B-2 PathBuilder S21x Switch Cabling
CTP Access Cable
CTP Access Cable
CTP Cable
Connector and
Pinout
Use the supplied RJ45/DB25 cable to connect to the CTP Port (Port 4) and perform
CTP operations such as coldloading software images into a PathBuilder S21x switch.
Port 4 is a DCE. This table identifies the pinout for this RJ-45 connector:
RJ45 Pin Signal Pin Connection
on DB25F
Adapter
1 (not connected) Request To Send (RTS) 4
2 DTE Ready (DTR) 20
3 Received Data (RXD) 3
4 (not connected) Data Carrier Detect (DCD) 8
5 Signal Ground 7
6 Transmitted Data (TXD) 2
7 Data Set Ready (DSR) 6
8 (not connected) Clear To Send (CTS) 5