Cisco 2524 and Cisco 2525 Router User Guide - Pinouts for the Cisco 2524 and Cisco 2525 [Cisco 2500 Series Routers]

Table Of Contents

Cabling Specifications for the Cisco 2524 and Cisco 2525 Routers

Console and Auxiliary Port Signals and Pinouts

Identifying a Roll-Over Cable

Console Port Signals and Pinouts

Auxiliary Port Signals and Pinouts

Ethernet Cable Assembly and Pinouts

Token Ring Port Pinouts

2-Wire Switched 56-kbps DSU/CSU Module Port Pinouts

4-Wire 56/64-kbps DSU/CSU Module Port Pinouts

Fractional T1/T1 DSU/CSU Module Port Pinouts

Synchronous Serial Cable Assemblies and Pinouts

EIA-530

EIA/TIA-232

EIA/TIA-449

V.35

X.21

ISDN BRI Port and Cable Pinouts

Cabling Specifications for the Cisco 2524 and Cisco 2525 Routers

This appendix provides the following pinout information:

•Console and Auxiliary Port Signals and Pinouts

•Ethernet Cable Assembly and Pinouts

•Token Ring Port Pinouts

•2-Wire Switched 56-kbps DSU/CSU Module Port Pinouts

•4-Wire 56/64-kbps DSU/CSU Module Port Pinouts

•Fractional T1/T1 DSU/CSU Module Port Pinouts

•Synchronous Serial Cable Assemblies and Pinouts

•ISDN BRI Port and Cable Pinouts

Note All pins not listed in the tables in this appendix are not connected.

Console and Auxiliary Port Signals and Pinouts

Your router comes with a console and auxiliary cable kit, which contains the cable and adapters you need to connect a console (an ASCII terminal or PC running terminal emulation software) or modem to your router. The console and auxiliary cable kit includes the following items:

•RJ-45-to-RJ-45 roll-over cable. (See the next section, "Identifying a Roll-Over Cable," for more information.)

•RJ-45-to-DB-9 female DTE adapter (labeled Terminal).

•RJ-45-to-DB-25 female DTE adapter (labeled Terminal).

•RJ-45-to-DB-25 male DCE adapter (labeled Modem).

For console connections, proceed to the section "Console Port Signals and Pinouts" later in this appendix; for modem connections, proceed to the section "Auxiliary Port Signals and Pinouts" later in this appendix.

Identifying a Roll-Over Cable

You can identify a roll-over cable by comparing the two modular ends of the cable. Holding the cables 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 wire connected to the pin on the outside of the right plug. (See .) If your cable was purchased from Cisco Systems, 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).

Figure C-1 Identifying a Roll-Over Cable

Console Port Signals and Pinouts

Use the RJ-45-to-RJ-45 roll-over cable and RJ-45-to-DB-9 female DTE adapter (labeled Terminal) to connect the console port to a PC running terminal emulation software. shows how to connect the console port to a PC. lists the pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 roll-over cable, and the RJ-45-to-DB-9 female DTE adapter (labeled Terminal).

Figure C-2 Connecting the Console Port to a PC

Table C-1

Console Port (DTE)

RJ-45-to-RJ-45

Roll-Over Cable

RJ-45-to-DB-9 Terminal Adapter

Console

Device

Signal

RJ-45 Pin

RJ-45 Pin

DB-9 Pin

Signal

RTS

1¹

8

8

CTS

DTR

2

7

6

DSR

TxD

3

6

2

RxD

GND

4

5

5

GND

GND

5

4

5

GND

RxD

6

3

3

TxD

DSR

7

3

4

DTR

CTS

81

1

7

RTS

¹Pin 1 is connected internally to Pin 8.

Console Port Signaling and Cabling Using a DB-9 Adapter

Use the RJ-45-to-RJ-45 roll-over cable and RJ-45-to-DB-25 female DTE adapter (labeled Terminal) to connect the console port to a terminal. shows how to connect the console port to a terminal. lists the pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 roll-over cable, and the RJ-45-to-DB-25 female DTE adapter (labeled Terminal).

Figure C-3 Connecting a the Console Port to a Terminal

Table C-2

Console Port (DTE)¹

RJ-45-to-RJ-45 Roll-Over Cable

RJ-45-to-DB-25 Terminal Adapter

Console

Device

Signal

RJ-45 Pin

RJ-45 Pin

DB-25 Pin

Signal

RTS

1²

8

5

CTS

DTR

2

7

6

DSR

TxD

3

6

3

RxD

GND

4

5

7

GND

GND

5

4

7

GND

RxD

6

3

2

TxD

DSR

7

3

20

DTR

CTS

81

1

4

RTS

¹You can use the same cabling to connect a console to the auxiliary port.

²Pin 1 is connected internally to Pin 8.

Console Port Signaling and Cabling Using a DB-25 Adapter

Auxiliary Port Signals and Pinouts

Use the RJ-45-to-RJ-45 roll-over cable and RJ-45-to-DB-25 male DCE adapter (labeled Modem) to connect the auxiliary port to a modem. shows how to connect the auxiliary port to a modem. lists the pinouts for the asynchronous serial auxiliary port, the RJ-45-to-RJ-45 roll-over cable, and the RJ-45-to-DB-25 male DCE adapter (labeled Modem).

Figure C-4 Connecting the Auxiliary Port to a Modem

Table C-3

AUX Port (DTE)

RJ-45-to-RJ-45

Roll-Over Cable

RJ-45-to-DB-25 Modem Adapter

Modem

Signal

RJ-45 Pin

RJ-45 Pin

DB-25 Pin

Signal

RTS

1¹

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

3

8

DCD

CTS

81

1

5

CTS

¹Pin 1 is connected internally to Pin 8.

Auxiliary Port Signaling and Cabling Using a DB-25 Adapter

Ethernet Cable Assembly and Pinouts

This section describes the pinouts for the Ethernet ports and cables.

Figure C-5 shows an Ethernet (AUI) cable assembly, and Table C-4 lists an AUI cable pinout.

Figure C-5 Ethernet (AUI) Cable Assembly

Table C-4 Ethernet (AUI) Cable Pinouts (DB-15)

Pin

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

lists the pinouts for the 10BaseT port. and list the pinouts for the cables you can use with the 10BaseT port.

Table C-5 10BaseT Ethernet Port (RJ-45) Pinouts

Pin

Description

1

TX+

2

TX-

3

RX+

4

-

5

-

6

RX-

7

-

8

-

Table C-6 RJ-45-to-RJ-45 Straight-Through Ethernet Cable Pinouts

RJ-45
Pin

Signal

Direction

RJ-45
Pin

1

TX+

->

1

2

TX-

->

2

3

RX+

<-

3

4

-

-

4

5

-

-

5

6

RX-

<-

6

7

-

-

7

8

-

-

8

Table C-7 RJ-45-to-RJ-45 Crossover Ethernet Cable Pinouts

RJ-45
Pin

Signal

Direction

RJ-45
Pin

Signal

1

TX+

->

3

RX+

2

TX-

->

6

RX-

3

RX+

<-

1

TX+

4

-

-

4

-

5

-

-

5

-

6

RX-

<-

2

TX-

7

-

-

7

-

8

-

-

8

-

Token Ring Port Pinouts

lists the Token Ring port pinouts. Use a Token Ring lobe cable to connect the Token Ring port to a MAU.

Table C-8 Token Ring Port (DB-9) Pinouts

9 Pin¹

Signal

1

Receive

3

+5V²

5

Transmit

6

Receive

9

Transmit

¹Pins 2, 4, 7, and 8 are ground.

²600 mA maximum.

2-Wire Switched 56-kbps DSU/CSU Module Port Pinouts

lists the port pinouts for the 2-wire switched 56 DSU/CSU module. Use a straight-through RJ-11-to-RJ-11 cable to connect the 2-wire switched 56 port to an RJ-11 jack.

Table C-9 2-Wire Switched 56-kbps DSU/CSU Module Port (RJ-11) Pinouts

RJ-11 6 Pin¹

Signal

3

Tip

4

Ring

¹Pins 1, 2, 5, and 6 are not used.

4-Wire 56/64-kbps DSU/CSU Module Port Pinouts

lists the port pinouts for the 4-wire 56/64-kbps DSU/CSU module. Use a straight-through RJ-48S-to-RJ-48S cable to connect the RJ-48S port to an RJ-48S jack.

Table C-10 4-Wire 56/64-kbps DSU/CSU Module Port (RJ-48S) Pinouts

RJ-48S 8 Pin¹

Signal

1

Receive ring

2

Receive tip

7

Ring

8

Tip

¹Pins 3, 4, 5, and 6 are not used.

Fractional T1/T1 DSU/CSU Module Port Pinouts

lists the fractional T1/T1 DSU/CSU module port pinouts. Use a straight-through RJ-48C-to-RJ-48C cable to connect the fractional T1/T1 port to an RJ-48C jack.

Table C-11 Fractional T1/T1 DSU/CSU Module Port (RJ-48C) Pinouts

RJ-48C8 Pin¹

Description

1

Receive ring

2

Receive tip

4

Ring

5

Tip

¹Pins 3, 6, 7, and 8 are not used.

Synchronous Serial Cable Assemblies and Pinouts

The illustrations and tables in this section provide assembly drawings and pinouts for the EIA-530 DCE, EIA/TIA-232, EIA/TIA-449, V.35, and X.21 DTE and DCE cables, which are used with the five-in-one synchronous serial WAN module.

EIA-530

Figure C-6 shows the EIA-530 serial cable assembly, and Table C-12 lists the pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-6 EIA-530 Serial Cable Assembly

Table C-12 EIA-530 DTE Cable Pinouts (DB-60 to DB-25)

60 Pin

Signal

25 Pin

Signal

Direction
DTE DCE¹

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-

—>
—>

¹The 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-7 shows the EIA/TIA-232 cable assembly. Table C-13 lists the DTE pinouts. Table C-14 lists the DCE pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-7 EIA/TIA-232 Cable Assembly

Table C-13 EIA/TIA-232 DTE Cable Pinouts (DB-60 to DB-25)

60 Pin

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
-

Table C-14 EIA/TIA-232 DCE Cable Pinouts (DB-60 to DB-25)

60 Pin

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
-

EIA/TIA-449

Figure C-8 shows the EIA/TIA-449 cable assembly. Table C-15 lists the DTE pinouts. Table C-16 lists the DCE pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-8 EIA/TIA-449 Cable Assembly

Table C-15 EIA/TIA-449 DTE Cable Pinouts (DB-60 to DB-37)

60 Pin

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

Table C-16 EIA/TIA-449 DCE Cable Pinouts (DB-60 to DB-37)

60 Pin

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

V.35

Figure C-9 shows the V.35 cable assembly. Table C-17 lists the DTE pinouts. Table C-18 lists the DCE pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-9 V.35 Cable Assembly

Table C-17 V.35 DTE Cable Pinouts (DB-60 to 34-Pin)

60 Pin

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-

Table C-18 V.35 DCE Cable Pinouts (DB-60 to 34-Pin)

60 Pin

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-

X.21

shows the X.21 cable assembly. Table C-19 lists the DTE pinouts. Table C-20 lists the DCE pinouts. Arrows indicate signal direction: —> indicates DTE to DCE, and <— indicates DCE to DTE.

Figure C-10 X.21 Cable Assembly

Table C-19 X.21 DTE Cable Pinouts (DB-60 to DB-15)

60 Pin

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
-

Table C-20 X.21 DCE Cable Pinouts (DB-60 to DB-15)

60 Pin

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
-

ISDN BRI Port and Cable Pinouts

lists the port pinouts for the ISDN WAN module (without integrated NT1). lists the BRI port and cable pinouts for the ISDN WAN module with an integrated NT1 device.

Table C-21 BRI Port (RJ-45) Pinouts

RJ-458 Pin¹

TE²

NT³

Polarity

3

Transmit

Receive

+

4

Receive

Transmit

+

5

Receive

Transmit

-

6

Transmit

Receive

-

¹Pins 1, 2, 7, and 8 are not used.

²TE refers to terminal terminating layer 1 aspects of TE1, TA, and NT2 functional groups.

³NT refers to network terminating layer 1 aspects of NT1 and NT2 functional groups.

Table C-22 BRI Cable (RJ-45-to-RJ-45) Pinouts

NT¹
RJ-45 (8 Pin)²

Wire

LT³
RJ-45 (8 Pin)

4

Tip

4

5

Ring

5

¹NT refers to the network terminating layer 1 aspects of NT1 and NT2 functional groups.

²Pins 1, 2, 3, 6, 7, and 8 are not used.

³LT refers to the line termination point (i.e., at the wall jack).