cc/td/doc/product/access/acs_fix/cis2500/2524
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Table of Contents

Cabling Specifications for the Cisco 2524 and Cisco 2525 Routers

Cabling Specifications for the Cisco 2524 and Cisco 2525 Routers

This appendix provides the following pinout information:

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:

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 Figure C-1.) 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. Figure C-2 shows how to connect the console port to a PC. Table C-1 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 Signaling and Cabling Using a DB-9 Adapter
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

1 Pin 1 is connected internally to Pin 8.

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. Figure C-3 shows how to connect the console port to a terminal. Table C-2 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 Signaling and Cabling Using a DB-25 Adapter
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 11 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

1 Pin 1 is connected internally to Pin 8.

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. Figure C-4 shows how to connect the auxiliary port to a modem. Table C-3 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: Auxiliary Port Signaling and Cabling Using a DB-25 Adapter
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

1 Pin 1 is connected internally to Pin 8.

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

Table C-5 lists the pinouts for the 10BaseT port. Table C-6 and Table C-7 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

Table C-8 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 Pin2 Signal
1 Receive
3 +5V1
5 Transmit
6 Receive
9 Transmit

1 600 mA maximum.

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

Table C-9 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 Pin3 Signal
3 Tip
4 Ring

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

Table C-10 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 Pin4 Signal
1 Receive ring
2 Receive tip
7 Ring
8 Tip

Fractional T1/T1 DSU/CSU Module Port Pinouts

Table C-11 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 Pin5 Description
1 Receive ring
2 Receive tip
4 Ring
5 Tip

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- 		-->
-->

1 The 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

Figure C-10 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

Table C-21 lists the port pinouts for the ISDN WAN module (without integrated NT1). Table C-22 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 Pin6 TE1 NT2 Polarity
3 Transmit Receive +
4 Receive Transmit +
5 Receive Transmit -
6 Transmit Receive -

1 TE refers to terminal terminating layer 1 aspects of TE1, TA, and NT2 functional groups.
2 NT refers to network terminating layer 1 aspects of NT1 and NT2 functional groups.

Table  C-22: BRI Cable (RJ-45-to-RJ-45) Pinouts
NT7
RJ-45 (8 Pin)8 		Wire LT1
RJ-45 (8 Pin)
4 Tip 4
5 Ring 5

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


1 You can use the same cabling to connect a console to the auxiliary port.
2 Pins 2, 4, 7, and 8 are ground.
3 Pins 1, 2, 5, and 6 are not used.
4 Pins 3, 4, 5, and 6 are not used.
5 Pins 3, 6, 7, and 8 are not used.
6 Pins 1, 2, 7, and 8 are not used.
7 NT refers to the network terminating layer 1 aspects of NT1 and NT2 functional groups.
8 Pins 1, 2, 3, 6, 7, and 8 are not used.

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