Paradyne CSU - Manual (Page 431)

E. Connectors, Cables, and Pin Assignments
9128-A2-GB20-80 September 2002 E-9
Cisco 7000 Series Router – DB25 Plug
3COM Router – DB9 Socket
COM Port
Direction
AUX Port
Signal RJ45 Pin # DB25 Pin # Signal
DCE Receive Data
( RXD) 2 From DTE 3 DTE Receive Data
( RXD)
DCE Signal Ground
( SG) 3 — 7 DTE Signal Ground
( SG)
DCE Transmit Data
( TXD) 4 To DTE 2 DTE Transmit Data
( TXD)
DCE Data Terminal
Ready (DTR) 5 To DTE 20 DTE Data Terminal
Ready (DTR)
DCE Carrier Detect
(CD) 6 To DTE 8 DTE Carrier Detect
(CD)
DCE Request to
Send (RTS) 7 To DTE 4 DTE Request to
Send (RTS)
COM Port
Direction
AUX Port
Signal RJ45 Pin # DB25 Pin # Signal
DCE Receive Data
( RXD) 2 From DTE 2 DTE Receive Data
( RXD)
DCE Signal Ground
( SG) 3 — 5 DTE Signal Ground
( SG)
DCE Transmit Data
( TXD) 4 To DTE 3 DTE Transmit Data
( TXD)
DCE Data Terminal
Ready (DTR) 5 To DTE 4 DTE Data Terminal
Ready (DTR)
DCE Carrier Detect
(CD) 6 To DTE 1 DTE Carrier Detect
(CD)
DCE Request to
Send (RTS) 7 To DTE 7 DTE Request to
Send (RTS)