Cable Specifications

Synchronous Serial Cable Assemblies and Pinouts

Table A-3. Auxiliary Port Signaling and Cabling Using a DB-25 Adapter

Auxiliary

RJ-45-to-RJ-45

RJ-45-to-DB-25

Modem

Port (DTE)

Roll-Over Cable

Modem Adapter

 

 

 

 

 

 

Signal

RJ-45 Pin

RJ-45 Pin

DB-25 Pin

Signal

 

 

 

 

 

RTS

1a

8

4

RTS

DTR

2

7

20

DTR

TxD

3

6

3

TxD

GND

4

5

7

GND

GND

5

4

7

GND

RxD

6

3

2

RxD

DSR

7

2

8

DCD

CTS

81

1

5

CTS

a. Pin 1 is connected internally to Pin 8.

Synchronous Serial Cable Assemblies and Pinouts

The illustrations and tables in this section provide assembly drawings and pinouts for the EIA-530 DTE, EIA/TIA-232, EIA/TIA-449, V.35, and X.21 DTE and DCE cables, which are used with the synchronous serial WAN port (labeled “SERIAL”).

EIA-530

Figure A-3 shows the EIA-530 serial cable assembly, and E-4 lists the pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Cable Specifications

A-5

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HP AdvanceStack Internet Router manual Synchronous Serial Cable Assemblies and Pinouts, EIA-530