E. Connectors, Cables, and Pin Assignments

COM Port-to-Router Cables

The following tables provide the pin assignments for connecting the 1-slot FrameSaver unit’s 25-position communication port to various router auxiliary (AUX) or console ports using standard cables.

Cisco 2500 Series Router – RJ45 Jack

COM Port

 

 

AUX Port

 

 

 

 

 

 

Signal

DB25 Pin #

Direction

RJ45 Pin #

 

Signal

 

 

 

 

 

 

DCE Transmit Data

2

To DTE

3

 

DTE Transmit Data

(TXD)

 

 

 

 

(TXD)

 

 

 

 

 

 

DCE Receive Data

3

From DTE

6

 

DTE Receive Data

(RXD)

 

 

 

 

(RXD)

 

 

 

 

 

 

DCE Request to

4

To DTE

1

 

DTE Request to

Send (RTS)

 

 

 

 

Send (RTS)

 

 

 

 

 

 

DCE Clear to Send

5

From DTE

8

 

DCE Clear to Send

(CTS)

 

 

 

 

(CTS)

 

 

 

 

 

 

DCE Data Set

6

From DTE

7

 

DCE Data Set

Ready (DSR)

 

 

 

 

Ready (DSR)

 

 

 

 

 

 

DCE Signal Ground

7

4, 5

 

DTE Signal Ground

(SG)

 

 

 

 

(SG)

 

 

 

 

 

 

DCE Data Terminal

20

To DTE

2

 

DTE Data Terminal

Ready (DTR)

 

 

 

 

Ready (DTR)

 

 

 

 

 

 

Cisco 7000 Series Router – DB25 Plug

 

 

 

 

 

 

 

COM Port

 

 

AUX Port

 

 

 

 

 

 

Signal

DB25 Pin #

Direction

DB25 Pin #

 

Signal

 

 

 

 

 

 

DCE Transmit Data

2

To DTE

2

 

DTE Transmit Data

(TXD)

 

 

 

 

(TXD)

 

 

 

 

 

 

DCE Receive Data

3

From DTE

3

 

DTE Receive Data

(RXD)

 

 

 

 

(RXD)

 

 

 

 

 

 

DCE Request to

4

To DTE

4

 

DTE Request to

Send (RTS)

 

 

 

 

Send (RTS)

 

 

 

 

 

 

DCE Signal Ground

7

7

 

DTE Signal Ground

(SG)

 

 

 

 

(SG)

 

 

 

 

 

 

DCE Carrier Detect

8

To DTE

8

 

DTE Carrier Detect

(CD)

 

 

 

 

(CD)

 

 

 

 

 

 

DCE Data Terminal

20

To DTE

20

 

DTE Data Terminal

Ready (DTR)

 

 

 

 

Ready (DTR)

 

 

 

 

 

 

9128-A2-GB20-80

September 2002

E-7

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Paradyne 9126-II manual COM Port-to-Router Cables, Cisco 2500 Series Router RJ45 Jack, Cisco 7000 Series Router DB25 Plug