Cisco 2509, 2510, 2511, and 2512 - Cable Specifications [Cisco 2500 Series Access Servers]

Table Of Contents

Cable Specifications

Console and Auxiliary Port Signals and Pinouts

Serial Cable Assemblies and Pinouts

EIA-530

EIA/TIA-232

EIA/TIA-449

V.35

X.21

Ethernet Cable Assembly and Pinout

Token Ring Pinout

Asynchronous Serial Ports

RJ-45 Adapter Pinouts

Cable Specifications

This appendix provides the following pinout information:

•, Table C-1

•, Table C-2

•, Table C-3

•, Table C-4

•, Table C-5

•, Table C-6

•, Table C-7

•, Table C-8

•, Table C-9

•, Table C-10

•, Table C-11

•, Table C-12

•, Table C-13

•, Table C-14

•,

•, Table C-16

•,

Console and Auxiliary Port Signals and Pinouts

The console port is configured as data communications equipment (DCE), and the auxiliary port is configured as data terminal equipment (DTE). The console and auxiliary ports both use RJ-45 connectors. RJ-45-to-DB-25 adapters are available for connection to modems and other external communications equipment. Both ports are configured as asynchronous serial ports.

Following are the pinouts for the console port (see Table C-1), the auxiliary port (see Table C-2), and the adapter (see and ).

Table C-1 Console Port Pinouts (RJ-45)

Console Port (DTE)

Pin¹

Signal

Input/Output

1

-

-

2

DTR

Output

3

TxD

Output

4

GND

-

5

GND

-

6

RxD

Input

7

DSR

Input

8

-

-

¹Any pin not referenced is not connected.

Table C-2 Auxiliary Port Pinouts (RJ-45)

Auxiliary Port (DTE)

Pin¹

Signal

Input/Output

1

RTS

Output

2

DTR

Output

3

TXD

Output

4

GND

-

5

GND

-

6

RXD

Input

7

DSR

Input

8

CTS

Input

¹Any pin not referenced is not connected.

Serial Cable Assemblies and Pinouts

The following illustrations and tables provide assembly drawings and pinouts for the EIA-530 DCE, and EIA/TIA-232, EIA/TIA-449, V.35, and X.21 DTE and DCE cables.

EIA-530

Figure C-1 shows the EIA-530 serial cable assembly, and Table C-3 lists the pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-1 EIA-530 Serial Cable Assembly

Table C-3 EIA-530 DTE Cable Pinout (DB-60 to DB-25)

60 Pin¹

Signal

25 Pin

Signal

Direction
DTE DCE²

J1-11
J1-12

TxD/RxD+
TxD/RxD-

J2-2
J2-14

BA(A), TxD+
BA(B), TxD-

—>
—>

J1-28
J1-27

RxD/TxD+
RxD/TxD-

J2-3
J2-16

BB(A), RxD+
BB(B), RxD-

<—
<—

J1-9
J1-10

RTS/CTS+
RTS/CTS-

J2-4
J2-19

CA(A), RTS+
CA(B), RTS-

—>
—>

J1-1
J1-2

CTS/RTS+
CTS/RTS-

J2-5
J2-13

CB(A), CTS+
CB(B), CTS-

<—
<—

J1-3
J1-4

DSR/DTR+
DSR/DTR-

J2-6
J2-22

CC(A), DSR+
CC(B), DSR-

<—
<—

J1-46
J1-47

Shield_GND
MODE_2

J2-1
-

Shield
-

Shorted

J1-48
J1-49

GND
MODE_1

-
-

-
-

Shorted

J1-5
J1-6

DCD/DCD+
DCD/DCD-

J2-8
J2-10

CF(A), DCD+
CF(B), DCD-

<—
<—

J1-24
J1-23

TxC/RxC+
TxC/RxC-

J2-15
J2-12

DB(A), TxC+
DB(B), TxC-

<—
<—

J1-26
J1-25

RxC/TxCE+
RxC/TxCE-

J2-17
J2-9

DD(A), RxC+
DD(B), RxC-

<—
<—

J1-44
J1-45

LL/DCD
Circuit_GND

J2-18
J2-7

LL
Circuit_ GND

—>
-

J1-7
J1-8

DTR/DSR+
DTR/DSR-

J2-20
J2-23

CD(A), DTR+
CD(B), DTR-

—>
—>

J1-13
J1-14

TxCE/TxC+
TxCE/TxC-

J2-24
J2-11

DA(A), TxCE+
DA(B), TxCE-

—>
—>

¹Any pin not referenced is not connected.

²The EIA-530 interface cannot be operated in DCE mode. A DCE cable is not available for the EIA-530 interface.

EIA/TIA-232

Figure C-2 shows the EIA/TIA-232 cable assembly; Table C-4 lists the DTE pinout; and Table C-5 lists the DCE pinout. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-2 EIA/TIA-232 Cable Assembly

Table C-4 EIA/TIA-232 DTE Cable Pinout (DB-60 to DB-25)

60 Pin¹

Signal

Description

Direction

25 Pin

Signal

J1-50
J1-51
J1-52

MODE_0
GND
MODE_DCE

Shorting group

-

-

-

J1-46

Shield GND

Single

-

J2-1

Shield GND

J1-41
Shield

TxD/RxD
-

Twisted pair no. 5

—>
-

J2-2
Shield

TxD
-

J1-36
Shield

RxD/TxD
-

Twisted pair no. 9

<—
-

J2-3
Shield

RxD
-

J1-42
Shield

RTS/CTS
-

Twisted pair no. 4

—>
-

J2-4
Shield

RTS
-

J1-35
Shield

CTS/RTS
-

Twisted pair no. 10

<—
-

J2-5
Shield

CTS
-

J1-34
Shield

DSR/DTR
-

Twisted pair no. 11

<—
-

J2-6
Shield

DSR
-

J1-45
Shield

Circuit GND
-

Twisted pair no. 1

-
-

J2-7
Shield

Circuit GND
-

J1-33
Shield

DCD/LL
-

Twisted pair no. 12

<—
-

J2-8
Shield

DCD
-

J1-37
Shield

TxC/NIL
-

Twisted pair no. 8

<—
-

J2-15
Shield

TxC
-

J1-38
Shield

RxC/TxCE
-

Twisted pair no. 7

<—
-

J2-17
Shield

RxC
-

J1-44
Shield

LL/DCD
-

Twisted pair no. 2

—>
-

J2-18
Shield

LTST
-

J1-43
Shield

DTR/DSR
-

Twisted pair no. 3

—>
-

J2-20
Shield

DTR
-

J1-39
Shield

TxCE/TxC
-

Twisted pair no. 6

—>
-

J2-24
Shield

TxCE
-

¹Any pin not referenced is not connected.

Table C-5 EIA/TIA-232 DCE Cable Pinout (DB-60 to DB-25)

60 Pin¹

Signal

Description

Direction

25 Pin

Signal

J1-50
J1-51

MODE_0
GND

Shorting group

-

-

-

J1-46

Shield GND

Single

-

J2-1

Shield GND

J1-36
Shield

RxD/TxD
-

Twisted pair no. 9

<—
-

J2-2
Shield

TxD
-

J1-41
Shield

TxD/RxD
-

Twisted pair no. 5

—>
-

J2-3
Shield

RxD
-

J1-35
Shield

CTS/RTS
-

Twisted pair no. 10

<—
-

J2-4
Shield

RTS
-

J1-42
Shield

RTS/CTS
-

Twisted pair no. 4

—>
-

J2-5
Shield

CTS
-

J1-43
Shield

DTR/DSR
-

Twisted pair no. 3

—>
-

J2-6
Shield

DSR
-

J1-45
Shield

Circuit GND
-

Twisted pair no. 1

-
-

J2-7
Shield

Circuit GND

J1-44
Shield

LL/DCD
-

Twisted pair no. 2

—>
-

J2-8
Shield

DCD
-

J1-39
Shield

TxCE/TxC
-

Twisted pair no. 7

—>
-

J2-15
Shield

TxC
-

J1-40
Shield

NIL/RxC
-

Twisted pair no. 6

—>
-

J2-17
Shield

RxC
-

J1-33
Shield

DCD/LL
-

Twisted pair no. 12

<—
-

J2-18
Shield

LTST
-

J1-34
Shield

DSR/DTR
-

Twisted pair no. 11

<—
-

J2-20
Shield

DTR
-

J1-38
Shield

RxC/TxCE
-

Twisted pair no. 8

<—
-

J2-24
Shield

TxCE
-

¹Any pin not referenced is not connected.

EIA/TIA-449

Figure C-3 shows the EIA/TIA-449 cable assembly; Table C-6 lists the DTE pinout; Table C-7 lists the DCE pinout. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-3 EIA/TIA-449 Cable Assembly

Table C-6 EIA/TIA-449 DTE Cable Pinout (DB-60 to DB-37)

60 Pin¹

Signal

Description

Direction

37 Pin

Signal

J1-49
J1-48

MODE_1
GND

Shorting group

-

-

-

J1-51
J1-52

GND
MODE_DCE

Shorting group

-

-

-

J1-46

Shield_GND

Single

_

J2-1

Shield GND

J1-11
J1-12

TxD/RxD+
TxD/RxD-

Twisted pair no. 6

—>
—>

J2-4
J2-22

SD+
SD-

J1-24
J1-23

TxC/RxC+
TxC/RxC-

Twisted pair no. 9

<—
<—

J2-5
J2-23

ST+
ST-

J1-28
J1-27

RxD/TxD+
RxD/TxD-

Twisted pair no. 11

<—
<—

J2-6
J2-24

RD+
RD-

J1-9
J1-10

RTS/CTS+
RTS/CTS-

Twisted pair no. 5

—>
—>

J2-7
J2-25

RS+
RS-

J1-26
J1-25

RxC/TxCE+
RxC/TxCE-

Twisted pair no. 10

<—
<—

J2-8
J2-26

RT+
RT-

J1-1
J1-2

CTS/RTS+
CTS/RTS-

Twisted pair no. 1

<—
<—

J2-9
J2-27

CS+
CS-

J1-44
J1-45

LL/DCD
Circuit_GND

Twisted pair no. 12

—>
_

J2-10
J2-37

LL
SC

J1-3
J1-4

DSR/DTR+
DSR/DTR-

Twisted pair no. 2

<—
<—

J2-11
J2-29

DM+
DM-

J1-7
J1-8

DTR/DSR+
DTR/DSR-

Twisted pair no. 4

—>
—>

J2-12
J2-30

TR+
TR-

J1-5
J1-6

DCD/DCD+
DCD/DCD-

Twisted pair no. 3

<—
<—

J2-13
J2-31

RR+
RR-

J1-13
J1-14

TxCE/TxC+
TxCE/TxC-

Twisted pair no. 7

—>
—>

J2-17
J2-35

TT+
TT-

J1-15
J1-16

Circuit_GND
Circuit_GND

Twisted pair no. 9

-
-

J2-19
J2-20

SG
RC

¹Any pin not referenced is not connected.

Table C-7 EIA/TIA-449 DCE Cable Pinout (DB-60 to DB-37)

60 Pin¹

Signal

Description

Direction

37 Pin

Signal

J1-49
J1-48

MODE_1
GND

Shorting group

-

-

-

J1-46

Shield_GND

Single

-

J2-1

Shield GND

J1-28
J1-27

RxD/TxD+
RxD/TxD-

Twisted pair no. 11

<—
<—

J2-4
J2-22

SD+
SD-

J1-13
J1-14

TxCE/TxC+
TxCE/TxC-

Twisted pair no. 7

—>
—>

J2-5
J2-23

ST+
ST-

J1-11
J1-12

TxD/RxD+
TxD/RxD-

Twisted pair no. 6

—>
—>

J2-6
J2-24

RD+
RD-

J1-1
J1-2

CTS/RTS+
CTS/RTS-

Twisted pair no. 1

<—
<—

J2-7
J2-25

RS+
RS-

J1-24
J1-23

TxC/RxC+
TxC/RxC-

Twisted pair no. 9

—>
—>

J2-8
J2-26

RT+
RT-

J1-9
J1-10

RTS/CTS+
RTS/CTS-

Twisted pair no. 5

—>
—>

J2-9
J2-27

CS+
CS-

J1-29
J1-30

NIL/LL
Circuit_GND

Twisted pair no. 12

—>
-

J2-10
J2-37

LL
SC

J1-7
J1-8

DTR/DSR+
DTR/DSR-

Twisted pair no. 4

—>
—>

J2-11
J2-29

DM+
DM-

J1-3
J1-4

DSR/DTR+
DSR/DTR-

Twisted pair no. 2

<—
<—

J2-12
J2-30

TR+
TR-

J1-5
J1-6

DCD/DCD+
DCD/DCD-

Twisted pair no. 3

—>
—>

J2-13
J2-31

RR+
RR-

J1-26
J1-25

RxC/TxCE+
RxC/TxCE-

Twisted pair no. 10

<—
<—

J2-17
J2-35

TT+
TT-

J1-15
J1-16

Circuit_GND
Circuit_GND

Twisted pair no. 8

_
_

J2-19
J2-20

SG
RC

¹Any pin not referenced is not connected.

V.35

Figure C-4 shows the V.35 cable assembly; Table C-8 lists the DTE pinout; Table C-9 lists the DCE pinout. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-4 V.35 Cable Assembly

Table C-8 V.35 DTE Cable Pinout (DB-60 to 34-Pin)

60 Pin¹

Signal

Description

Direction

34 Pin

Signal

J1-49
J1-48

MODE_1
GND

Shorting group

-

-

-

J1-50
J1-51
J1-52

MODE_0
GND
MODE_DCE

Shorting group

-

-

-

J1-53
J1-54
J1-55
J1-56

TxC/NIL
RxC_TxCE
RxD/TxD
GND

Shorting group

-

-

-

J1-46

Shield_GND

Single

-

J2-A

Frame GND

J1-45
Shield

Circuit_GND
-

Twisted pair no. 12

-
-

J2-B
Shield

Circuit GND
-

J1-42
Shield

RTS/CTS
-

Twisted pair no. 9

—>
-

J2-C
Shield

RTS
-

J1-35
Shield

CTS/RTS
-

Twisted pair no. 8

<—
-

J2-D
Shield

CTS
-

J1-34
Shield

DSR/DTR
-

Twisted pair no. 7

<—
-

J2-E
Shield

DSR
-

J1-33
Shield

DCD/LL
-

Twisted pair no. 6

<—
-

J2-F
Shield

RLSD
-

J1-43
Shield

DTR/DSR
-

Twisted pair no. 10

—>
-

J2-H
Shield

DTR
-

J1-44
Shield

LL/DCD
-

Twisted pair no. 11

—>
-

J2-K
Shield

LT
-

J1-18
J1-17

TxD/RxD+
TxD/RxD-

Twisted pair no. 1

—>
—>

J2-P
J2-S

SD+
SD-

J1-28
J1-27

RxD/TxD+
RxD/TxD-

Twisted pair no. 5

<—
<—

J2-R
J2-T

RD+
RD-

J1-20
J1-19

TxCE/TxC+
TxCE/TxC-

Twisted pair no. 2

—>
—>

J2-U
J2-W

SCTE+
SCTE-

J1-26
J1-25

RxC/TxCE+
RxC/TxCE-

Twisted pair no. 4

<—
<—

J2-V
J2-X

SCR+
SCR-

J1-24
J1-23

TxC/RxC+
TxC/RxC-

Twisted pair no. 3

<—
<—

J2-Y
J2-AA

SCT+
SCT-

¹Any pin not referenced is not connected.

Table C-9 V.35 DCE Cable Pinout (DB-60 to 34-Pin)

60 Pin¹

Signal

Description

Direction

34 Pin

Signal

J1-49
J1-48

MODE_1
GND

Shorting group

-

-

-

J1-50
J1-51

MODE_0
GND

Shorting group

-

-

-

J1-53
J1-54
J1-55
J1-56

TxC/NIL
RxC_TxCE
RxD/TxD
GND

Shorting group

-

-

-

J1-46

Shield_GND

Single

-

J2-A

Frame GND

J1-45
Shield

Circuit_GND
-

Twisted pair no. 12

-
-

J2-B
Shield

Circuit GND
-

J1-35
Shield

CTS/RTS
-

Twisted pair no. 8

<—
-

J2-C
Shield

RTS
-

J1-42
Shield

RTS/CTS
-

Twisted pair no. 9

—>
-

J2-D
Shield

CTS
-

J1-43
Shield

DTR/DSR
-

Twisted pair no. 10

—>
-

J2-E
Shield

DSR
-

J1-44
Shield

LL/DCD
-

Twisted pair no. 11

—>
-

J2-F
Shield

RLSD
-

J1-34
Shield

DSR/DTR
-

Twisted pair no. 7

<—
-

J2-H
Shield

DTR
-

J1-33
Shield

DCD/LL
-

Twisted pair no. 6

<—
-

J2-K
Shield

LT
-

J1-28
J1-27

RxD/TxD+
RxD/TxD-

Twisted pair no. 5

<—
<—

J2-P
J2-S

SD+
SD-

J1-18
J1-17

TxD/RxD+
TxD/RxD-

Twisted pair no. 1

—>
—>

J2-R
J2-T

RD+
RD-

J1-26
J1-25

RxC/TxCE+
RxC/TxCE-

Twisted pair no. 4

<—
<—

J2-U
J2-W

SCTE+
SCTE-

J1-22
J1-21

NIL/RxC+
NIL/RxC-

Twisted pair no. 3

—>
—>

J2-V
J2-X

SCR+
SCR-

J1-20
J1-19

TxCE/TxC+
TxCE/TxC-

Twisted pair no. 2

—>
—>

J2-Y
J2-AA

SCT+
SCT-

¹Any pin not referenced is not connected.

X.21

shows the X.21 cable assembly; Table C-10 lists the DTE pinout; Table C-11 lists the DCE pinout. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-5 X.21 Cable Assembly

Table C-10 X.21 DTE Cable Pinout (DB-60 to DB-15)

60 Pin¹

Signal

Description

Direction

15 Pin

Signal

J1-48
J1-47

GND
MODE_2

Shorting group

-

-

-

J1-51
J1-52

GND
MODE_DCE

Shorting group

-

-

-

J1-46

Shield_GND

Single

-

J2-1

Shield GND

J1-11
J1-12

TxD/RxD+
TxD/RxD-

Twisted pair no. 3

—>
—>

J2-2
J2-9

Transmit+
Transmit-

J1-9
J1-10

RTS/CTS+
RTS/CTS-

Twisted pair no. 2

—>
—>

J2-3
J2-10

Control+
Control-

J1-28
J1-27

RxD/TxD+
RxD/TxD-

Twisted pair no. 6

<—
<—

J2-4
J2-11

Receive+
Receive-

J1-1
J1-2

CTS/RTS+
CTS/RTS-

Twisted pair no. 1

<—
<—

J2-5
J2-12

Indication+
Indication-

J1-26
J1-25

RxC/TxCE+
RxC/TxCE-

Twisted pair no. 5

<—
<—

J2-6
J2-13

Timing+
Timing-

J1-15
Shield

Control_GND
-

Twisted pair no. 4

-
-

J2-8
Shield

Control GND
-

¹Any pin not referenced is not connected.

Table C-11 X.21 DCE Cable Pinout (DB-60 to DB-15)

60 Pin¹

Signal

Description

Direction

15 Pin

Signal

J1-48
J1-47

GND
MODE_2

Shorting group

-

-

-

J1-46

Shield_GND

Single

-

J2-1

Shield GND

J1-28
J1-27

RxD/TxD+
RxD/TxD-

Twisted pair no. 6

<—
<—

J2-2
J2-9

Transmit+
Transmit-

J1-1
J1-2

CTS/RTS+
CTS/RTS-

Twisted pair no. 1

<—
<—

J2-3
J2-10

Control+
Control-

J1-11
J1-12

TxD/RxD+
TxD/RxD-

Twisted pair no. 3

—>
—>

J2-4
J2-11

Receive+
Receive-

J1-9
J1-10

RTS/CTS+
RTS/CTS-

Twisted pair no. 2

—>
—>

J2-5
J2-12

Indication+
Indication-

J1-24
J1-23

TxC/RxC+
TxC/RxC-

Twisted pair no. 4

—>
—>

J2-6
J2-13

Timing+
Timing-

J1-15
Shield

Control_GND
-

Twisted pair no. 5

-
-

J2-8
Shield

Control GND
-

¹Any pin not referenced is not connected.

Ethernet Cable Assembly and Pinout

Figure C-6 shows an Ethernet (AUI) cable assembly, and Table C-12 lists an AUI cable pinout.

Figure C-6 Ethernet (AUI) Cable Assembly

Table C-12 Ethernet (AUI) Cable Pinout (DB-15)

Pin¹

Ethernet Circuit

Signal

3

DO-A

Data Out Circuit A

10

DO-B

Data Out Circuit B

11

DO-S

Data Out Circuit Shield

5

DI-A

Data In Circuit A

12

DI-B

Data In Circuit B

4

DI-S

Data In Circuit Shield

2

CI-A

Control In Circuit A

9

CI-B

Control In Circuit B

1

CI-S

Control In Circuit Shield

6

VC

Voltage Common

13

VP

Voltage Plus

14

VS

Voltage Shield (L25 and M25)

Shell

PG

Protective Ground

¹Any pin not referenced is not connected.

Token Ring Pinout

lists the pinout for the Token Ring interface port.

Table C-13 Token Ring Port Pinout (DB-9)

9 Pin¹

Signal

1

Receive

3

+5V²

5

Transmit

6

Receive

9

Transmit

¹Pins 2, 4, 7, and 8 are ground.

²600 mA maximum.

Asynchronous Serial Ports

Figure C-7 shows the RJ-45 breakout cable with pinouts for the 68-pin SCSI port and the RJ-45 serial port. contains the pinout for the RJ-45 end, and contains the pinout for the 68-pin SCSI type connector.

Figure C-7 Asynchronous Serial Interface Breakout Cable Assembly

Table C-14

8-Pin RJ-45

Signal

Direction

1

CTS

<—

2

DSR/DCD

<—

3

RXD

<—

4

RXD/GND

—

5

TXD/GND

—

6

TXD

—>

7

DTR

—>

8

RTS

—>

Asynchronous Breakout Cable Pinout (8-Pin RJ-45)

Note The Asynchronous breakout cable is equivalent to a console or auxiliary port with a roll-over RJ-45 cable attached. See for asynchronous device connection options.

Table C-15 Asynchronous-Line Cable Pinout (68-Pin SCSI)

RJ-45 Plug

Pin

Signal

68-Pin

SCSI (J1)

1

1

CTS

39

2

DSR

5

3

RXD

38

4

RXD GND

4

5

TXD GND

37

6

TXD

3

7

DTR

36

8

RTS

2

2

1

CTS

43

2

DSR

9

3

RXD

42

4

RXD GND

8

5

TXD GND

41

6

TXD

7

7

DTR

40

8

RTS

6

3

1

CTS

47

2

DSR

13

3

RXD

46

4

RXD GND

12

5

TXD GND

45

6

TXD

11

7

DTR

44

8

RTS

10

4

1

CTS

51

2

DSR

17

3

RXD

50

4

RXD GND

16

5

TXD GND

49

6

TXD

15

7

DTR

48

8

RTS

14

5

1

CTS

55

2

DSR

21

3

RXD

54

4

RXD GND

20

5

TXD GND

53

6

TXD

19

7

DTR

52

8

RTS

18

6

1

CTS

59

2

DSR

25

3

RXD

58

4

RXD GND

24

5

TXD GND

57

6

TXD

23

7

DTR

56

8

RTS

22

7

1

CTS

53

2

DSR

29

3

RXD

62

4

RXD GND

28

5

TXD GND

61

6

TXD

27

7

DTR

60

8

RTS

26

8

1

CTS

67

2

DSR

33

3

RXD

66

4

RXD GND

32

5

TXD GND

65

6

TXD

31

7

DTR

64

8

RTS

30

RJ-45 Adapter Pinouts

Refer to for a list of the pins used on the RJ-45-to-DB-25 adapters, used with an RJ-45 cable, to connect terminals and modems to the Cisco 2500 series access server. The cable you use may be a roll-over cable or a straight cable.

A roll-over cable can be detected by comparing the two modular ends of the cable. Holding the cables in your hand, side-by-side, with the tab at the back, the wire connected to the pin on the outside of the left plug should be the same color as the pin on the outside of the right plug. If your cable was purchased from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a roll-over cable reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5). (See .)

Figure C-8 Identifying a Roll-Over Cable

The Cisco 2500 series access server ships with a rolled cable. Connection to a terminal or a modem will require an RJ-45-to-DB-25 adapter, and possibly a DB-25-to-DB9 adapter. Refer to for the cable and adapter configurations that can be used to connect terminals and modems to the Cisco 2500 series access server.

Table C-16 Pinouts for the RJ-45-to-DB-25 Adapters

Adapter

DTE M/F Pins¹

DCE M/F Pins

MMOD Pins²

RJ-45 Pins

DB-25 Pins

1

4

5

5

2

20

6

8

3

2

3

3

4

7

7

7

5

7

7

7

6

3

2

2

7

6

20

20

8

5

4

4

¹The female data terminal equipment (FDTE) adapter that is available from Cisco is labeled "Terminal."

²The MMOD adapter that is available from Cisco is labeled "Modem."

Table C-17 Asynchronous Device Cabling Options

Access Server Port

RJ-45 Cable Type

DB-25 Adapter

End Device

Console or auxiliary

Rolled

FDTE¹

Terminal

Console or auxiliary

Straight

FDCE

Terminal

Auxiliary or console

Rolled

MMOD^²

Modem³

¹The FDTE RJ-45-to-DB-25 adapter is labeled "Terminal."

²The MMOD RJ-45-to-DB-25 adapter is labeled "Modem."

³The asynchronous breakout cable (see and ) is functionally equivalent to a roll-over cable.