Cisco 2000 Quick-Start Guide - Cable Specifications [Cisco 2000 Series Routers]

Table Of Contents

Cable Specifications

Assembling Your Own Cables

RS-232 Console and Auxiliary Port Signals and Pinouts

Serial Cable Pinouts

RS-232

RS-449

V.35

X.21

EIA-530

Ethernet Cable Pinouts

Token Ring Port Pinout (DB-9)

Cable Specifications

This appendix provides the following cable assembly illustrations and pinout descriptions, which you can use to construct your own cables:

•RS-232 console port cable

•RS-232 auxiliary port cable

•Serial DTE RS-232 cable

•Serial DTE RS-449 cable

•Serial DTE V.35 cable

•Serial DTE X.21 cable

•Serial DTE EIA-530 cable

•Ethernet (AUI) cables

The cables available from us meet FCC part 15J Class A requirements and Verband Deutscher Electrotechniker (VDE) 0871 Limit B levels. If you construct your own cables, refer to the appropriate documentation regarding interference considerations and cable length limitations.

Assembling Your Own Cables

When assembling your cable, follow these steps:

Step 1 Fold back the braided shield to make electrical and mechanical connection with the metal shell on both ends.

Step 2 Cut unterminated wires back. Insulate or ensure insulation from other conductors.

Step 3 Use the following illustrations and connection tables as a guide to creating your own cables:

•When assembling an RS-232 console port cable, refer to

•When assembling an RS-232 auxiliary port cable, refer to .

•When assembling an RS-232 cable, refer to and .

•When assembling an RS-449 cable, refer to and .

•When assembling a V.35 cable, refer to and .

•When assembling an X.21 cable, refer to and .

•When assembling an EIA-530 cable, refer to and .

•When assembling an Ethernet (AUI) cable, refer to and .

RS-232 Console and Auxiliary Port Signals and Pinouts

Refer to when assembling an RS-232 console cable, and refer to when assembling an RS-232 auxiliary port cable.

Table A-1 Console Port RS-232 Signals (25-Pin D Connector)

Pin¹

Signal Name

Direction

1

Frame Ground

-

2

Transmitted Data

Input

3

Received Data

Output

4

Request To Send

Shorted together internally with Pin 5

5

Clear To Send

-

6

Shorted to Pin 8

Output

7

Ground

-

8

Carrier Detect

Output

20

Data Terminal Ready

Input

¹Any pin not referenced on a connector is not connected.

Table A-2 Auxiliary Port RS-232 Signals (25-Pin D Connector)

Pin¹

Signal Name

Direction

1

Frame Ground

-

2

Transmitted Data

Output

3

Received Data

Input

4

Request To Send

Output

5

Clear To Send

Input

7

Ground

-

8

Carrier Detect

Input

20

Data Terminal Ready

Output

22

Ring Indicator

Input

¹Any pin not referenced on a connector is not connected.

Serial Cable Pinouts

The following illustrations and tables provide the pinouts and signal descriptions for the RS-232, RS-449, V.35, X.21, and EIA-530 DTE cables.

RS-232

shows the RS-232 cable assembly, and shows the cable pinouts.

Figure A-1 RS-232 Cable Assembly

Table A-3 RS-232 DTE Serial Cable Pinouts

72-0670-01 Connections¹

50 Pin

25 Pin

Type

J1-3

J1-36

J1-39
J1-40

J2-5
J2-4

Twisted Pair

J1-9
J1-42

J2-8
J2-6

Twisted Pair

J1-11
J1-44

J2-2
J2-7

Twisted Pair

J1-46
J1-30

J2-3
J2-20

Twisted Pair

J1-14
J1-47

J2-18
J2-17

Twisted Pair

J1-31
J1-15

J2-15
J2-1

Twisted Pair

J1-16

J2-24

Twisted Pair

¹Any pin not referenced on a connector is not connected.

RS-449

Figure A-2 shows the RS-449 cable assembly, and lists the cable pinouts.

Figure A-2 RS-449 Cable Assembly

Table A-4 RS-449 DTE Serial Cable Pinouts

72-0672-01 Connections

50 Pin¹

37 Pin

Type

J1-5

J1-38

J1-7

J2-10

J1-1
J1-34

J2-4
J2-22

Twisted Pair

J1-2
J1-18

J2-5
J2-23

Twisted Pair

J1-35
J1-19

J2-6
J2-24

Twisted Pair

J1-4
J1-20

J2-7
J2-25

Twisted Pair

J1-37
J1-21

J2-8
J2-26

Twisted Pair

J1-22
J1-6

J2-27
J2-9

Twisted Pair

J1-8
J1-24

J2-11
J2-29

Twisted Pair

J1-41
J1-25

J2-12
J2-30

Twisted Pair

J1-10
J1-26

J2-13
J2-31

Twisted Pair

J1-43
J1-27

J2-17
J2-35

Twisted Pair

J1-36
J1-15

J2-19
J2-1

Twisted Pair

J1-44
J1-48

J2-37
J2-20

Twisted Pair

¹Any pin not referenced on a connector is not connected.

V.35

Figure A-3 shows the V.35 cable assembly with the resistor (301 ohms, 1/4 watt, ±1%), and lists the cable pinouts and signal descriptions.

Figure A-3 V.35 Cable Assembly

Table A-5 V.35 DTE Serial Cable Pinouts and Signal Descriptions

72-0671-02 Connections

50 Pin¹

34 Pin

Type

Signal

Direction

J1-3

J1-36

Jumper

MUX

To Ground

J1-5

J1-38

Jumper

MUX

To Ground

J1-14

J1-Shield

J2-K
J2-Shield

Twisted Pair

LTST
Not Used

J1-2
J1-18

J2-Y
J2-AA

Twisted Pair

SCT+
SCT-

J1-12
J1-28

J2-P
J2-S

Twisted Pair

TXD+
TXD-

J1-35
J1-19

J2-R
J2-T

Twisted Pair

RXD+
RXD-

J1-37
J1-21

J2-V
J2-X

Twisted Pair

SCR+
SCR-

J1-45
J1-29

J2-U
J2-W

Twisted Pair

SCTE+
SCTE-

J1-42
J1-Shield

J2-E
J2-Shield

Twisted Pair

DSR
Not Used

J1-9
J1-48

J2-F
J2-A

Twisted Pair

RLSD
Ground

J1-40
J1-Shield

J2-C
J2-Shield

Twisted Pair

RTS
Not Used

J1-2
J1-18

J1-3
J1-5

Resistor
Resistor

SCT+
SCT-

R To
Ground

J1-35
J1-19

J1-36
J1-38

Resistor
Resistor

RXD+
RXD-

R To
Ground

J1-37
J1-21

J1-44
J1-48

Resistor
Resistor

SCR+
SCR-

R To
Ground

J1-30
J1-44

J2-H
J2-B

Twisted Pair

DTR
Ground

J1-39
J1-Shield

J2-D
J2-Shield

Twisted Pair

CTS
Not Used

J1-Shield
J1-Shield

J2-Shield
J2-Shield

Twisted Pair

Not Used
Not Used

J1-Shield

J2-Shield

Single

Not Used

¹Any pin not referenced on a connector is not connected.

If the system's serial port is labeled with V2, as shown in Figure A-4, then for optimum performance, use the version of the cable with the part number ending in -02: 72-0671-02 (DTE).

Figure A-4 Serial Port Labeled V2

X.21

Figure A-5 shows the X.21 cable assembly, and lists the cable pinout.

Figure A-5 X.21 Cable Assembly

Table A-6 X.21 DTE Serial Cable Pinouts and Signal Descriptions

72-0683-02 Connections¹

From

Signal

Type

To

Signal

J1-5

MUX SEL

J1-38

GND

J1-36

449 GND

J2-8

X.21 GND

J1-41
J1-25

449 DTR

Jumper

J1-6
J1-22

449 CTS

J1-41
J1-25

449 DTR

Jumper

J1-8
J1-24

449 DSR

J1-43
J1-27

449 SCTE

Jumper

J1-37
J1-21

449 SCR

J1-1
J1-34

449 TXD

Twisted Pair

J2-2
J2-9

X.21 TXD

J1-4
J1-20

449 RTS

Twisted Pair

J2-3
J2-10

X.21 CTL

J1-35
J1-19

449 RXD

Twisted Pair

J2-4
J2-11

X.21 RXD

J1-10
J1-26

449 RLSD

Twisted Pair

J2-5
J2-12

X.21 IND

J1-2
J1-18

449 SCT

Twisted Pair

J2-6
J2-13

X.21 CLK

¹Any pin not referenced on a connector is not connected.

EIA-530

Figure A-6 shows the EIA-530 cable assembly, and lists the cable pinouts and signal descriptions.

Figure A-6 EIA-530 Cable Assembly

Table A-7 EIA-530 DTE Serial Cable Pinouts and Signal Descriptions

72-0732-01 Connections

50 Pin¹

Signal Name

Direction

25 Pin

Type

J1-5
J1-38

Looped

NC

Jumper

J1-1
J1-34

TXD+
TXD-

J2-2
J2-14

Twisted Pair

J1-35
J1-19

RXD+
RXD-

J2-3
J2-16

Twisted Pair

J1-4
J1-20

RTS+
RTS-

J2-4
J2-19

Twisted Pair

J1-6
J1-22

CTS+
CTS-

J2-5
J2-13

Twisted Pair

J1-10
J1-26

RLSD+ (RR+)
RLSD- (RR-)

J2-8
J2-10

Twisted Pair

J1-2
J1-18

SCT+
SCT-

J2-15
J2-12

Twisted Pair

J1-37
J1-21

SCR+
SCR-

J2-17
J2-9

Twisted Pair

J1-43
J1-27

SCTE+ (TT+)
SCTE- (TT-)

J2-24
J2-11

Twisted Pair

J1-7

LL

J2-18

Twisted Pair

J1-48
J1-36

Ground

J2-23
J2-7

Twisted Pair

J1-15

Shield

J2-1

Single Wire

J1-8
J1-24

DCE Ready
Ground

J2-6
J2-23

Twisted Pair

J1-41

DTE Ready

J2-20

Twisted Pair

¹Any pin not referenced on a connector is not connected.

Ethernet Cable Pinouts

Figure A-7 shows the Ethernet (AUI) cable assembly, and lists the cable pinout.

Figure A-7 Ethernet Cable Assembly

Table A-8 Ethernet Cable Pinouts and Signal Descriptions

Pin¹

Ethernet Circuit

Signal Name

1

CI-S

Control In Circuit Shield

2

CI-A

Control In Circuit A

3

DO-A

Data Out Circuit A

4

DI-S

Data In Circuit Shield (Jumper L23 and M23)

5

DI-A

Data In Circuit A

6

VC

Voltage Common

7

CO-A

Control Out Circuit A (not connected)

8

CO-S

Control Out Circuit Shield (not connected)

9

CI-B

Control In Circuit B

10

DO-B

Data Out Circuit B

11

DO-S

Data Out Circuit Shield (Jumper L24 and M24)

12

DI-B

Data In Circuit B

13

VP

Voltage Plus

14

VS

Voltage Shield (L25 and M25)

15

CO-B

Control Out Circuit B (not connected)

Shell

PG

Protective Ground

¹Any pin not referenced on a connector is not connected.

Token Ring Port Pinout (DB-9)

lists the Token Ring port pinout.

Table A-9 Token Ring Port Pinout (DB-9)

9-Pin

Signal

1

-RX

2

NC¹

3

NC

4

NC

5

-TX

6

+RX

7

NC

8

NC

9

+TX

¹NC stands for not connected.