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Table of Contents

Cable Specifications

Cable Specifications

This appendix describes cable signals and pinouts.

The cables available from us meet FCC part 15J Class B requirements. When constructing your own cables, refer to applicable standards for regulatory compliance, interference considerations, and cable length limitations.

Note All pins not listed are not connected.

Following are the signal summaries in this appendix:

Console and Auxiliary Port Signals and Pinouts

The EIA/TIA-232 console port is configured as DTE and uses an RJ-45 connector.

The router ships with a cable kit to connect a console (an ASCII terminal or PC running terminal emulation software) to the console port. The console cable kit contains an RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-9 and RJ-45-to-DB-25 female DTE adapters (labeled Terminal). Table C-1 lists pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-9 and RJ-45-to-DB-25 female DTE adapters. Auxiliary port pinouts are the same as the console port pinouts.


Table C-1: Console and Auxiliary Port, Cable, and Adapter Signals and Pinouts
Auxiliary and Console Port (DTE) RJ-45-to-RJ-45 Rollover Cable RJ-45-to-DB-9 Adapter RJ-45-to-DB-25 Adapter
Signal RJ-45 Pin RJ-45 Pin DB-9 Pin DB-25 Pin Signal
RTS 1 8 8 5 CTS
DTR 2 7 6 6 DSR
TxD 3 6 2 3 RxD
GND 4 5 5 7 GND
GND 5 4 5 7 GND
RxD 6 3 3 2 TxD
DSR 7 2 4 20 DTR
CTS 8 1 7 4 RTS

You can identify a rollover cable by comparing the modular plugs at the two ends of the cable. When you hold the plugs 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 you purchased your cable from us, pin 1 is white on one connector, and pin 8 is white on the other (a rollover cable connects pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).


Figure C-1: Identifying a Rollover Cable



Serial Cable Pinouts

All serial interface types except EIA-530 are available in DTE or DCE format: DTE with a plug connector at the network end and DCE with a receptacle at the network end. V.35 is available in either mode with either gender at the network end. EIA-530 is available in DTE only.

The tables in this section list the signal pinouts for both the DTE-mode and DCE-mode serial port adapter cables for each serial interface type.

Note The serial WAN interface card uses a universal high-density, 60-pin receptacle. Each universal port requires a serial port adapter cable that determines the port's electrical interface type and mode: DTE or DCE. Although all port adapter cables use a universal plug at the quad serial module end, the network end of each cable type uses the physical connectors commonly used for the interface. (For example, the network end of the EIA/TIA-232 port adapter cable is a DB-25 connector, the most widely used EIA/TIA-232 connector.)

EIA/TIA-232 Serial Cable Assembly

Figure C-2 shows the EIA/TIA-232 serial cable assembly; Table C-2 lists the DTE pinouts; and Table C-3 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.


Figure C-2: EIA/TIA-232 Cable Assembly




Table C-2: EIA/TIA-232 Serial DTE Cable Pinouts (DB-60 to DB-25)
60 Pin Signal Note 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
J1-46 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-3: EIA/TIA-232 DCE Cable Pinouts (DB-60 to DB-25)
60 Pin Signal Note Direction 25 Pin Signal
J1-50
J1-51 		MODE_0
GND 		Shorting group -
 -
 -
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 Serial Cable Assembly

Figure C-3 shows the EIA/TIA-449 serial cable assembly; Table C-4 lists the DTE pinouts; Table C-5 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.


Figure C-3: EIA/TIA-449 Serial Cable Assembly




Table C-4: EIA/TIA-449 DTE Cable Pinouts (DB-60 to DB-37) (Continued)
60 Pin Signal Name Note Direction 37 Pin Signal Name
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-5: EIA/TIA-449 Serial DCE Cable Pinouts (DB-60 to DB-37) (Continued)
60 Pin Signal Name Note Direction 37 Pin Signal Name
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 Serial Cable Assembly

Figure C-4 shows the V.35 serial cable assembly; Table C-6 lists the DTE pinouts; Table C-7 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.


Figure C-4: V.35 Serial Cable Assembly




Table C-6: V.35 Serial DTE Cable Pinouts (DB-60 to Winchester-Type 34 Pin)
60 Pin Signal Name Type Direction 34 Pin Signal Name
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-7: V.35 DCE Cable Pinouts (DB-60 to Winchester-Type 34 Pin)
60 Pin Signal Name Type Direction 34 Pin Signal Name
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 Serial Cable Assembly

Figure C-5 shows the X.21 serial cable assembly; Table C-8 lists the DTE pinouts; Table C-9 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.


Figure C-5: X.21 Serial Cable Assembly




Table C-8: X.21 Serial DTE Cable Pinouts (DB-60 to DB-15)
60 Pin Signal Name Type Direction 15 Pin Signal Name
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-9: X.21 Serial DCE Cable Pinouts (DB-60 to DB-15)
60 Pin Signal Name Type Direction 15 Pin Signal Name
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
-

EIA-530 Serial Cable Assembly

Figure C-6 shows the EIA-530 serial cable assembly, and Table C-10 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-10: EIA-530 Serial DTE Cable Pinouts (DB-60 to DB-25) (Continued)

60 Pin
Signal Name
25 Pin
Signal Name 		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- 		-->
-->
J1-51
J1-52 		GND
MODE_DCE 		-
- 		-
- 		Shorted

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

Ethernet Cable Pinouts

This section provides the pinouts and signal descriptions for the Ethernet (AUI) cable and 10BaseT connector.

Ethernet (AUI) Cable Pinouts

Figure C-7 shows the Ethernet (AUI) cable assembly and Table C-11 lists the pinouts.


Figure C-7: Ethernet (AUI) Cable Assembly




Table C-11: Ethernet (AUI) Pinouts
Pin Ethernet Circuit Signal Name
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
7 CO-A Control Out Circuit A (not connected)
15 CO-B Control Out Circuit B (not connected)
8 CO-S Control Out Circuit Shield (not connected)
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

10BaseT Connector Pinouts

Figure C-8 shows the 10BaseT (RJ-45) connector, and Table C-12 lists the pinouts.


Figure C-8: 10BaseT RJ-45 Connector




Table C-12: RJ-45 Connector Pinouts
Pin Description
1 TX+
2 TX-
3 RX+
4 -
5 -
6 RX-
7 -
8 -

Fast Ethernet Connector Pinouts

This section illustrates the Fast Ethernet 100BaseTX (RJ-45) connector and lists its pinout and signal descriptions.

Figure C-9 shows the 100BaseTX RJ-45 connector, and Table C-13 lists its pinout. The 1-port Fast Ethernet network module RJ-45 port actively terminates wire pair 4 and 5 and wire pair 7 and 8. Common-mode termination reduces electromagnetic interference (EMI) and susceptibility to common-mode sources.


Figure C-9: 100BaseTX RJ-45 Connector




Table  C-13: RJ-45 Connector Pinout
Pin Signal
1 TX+
2 TX-
3 RX+
6 RX-

Token Ring Port Pinouts

The 1E1R 2-slot module provides both UTP and STP Token Ring connections.

Token Ring STP Port Pinouts

Table C-14 shows the Token Ring STP port pinouts used by the 1E1R 2-slot module.


Table C-14: Token Ring STP Port (DB-9) Pinouts
9-Pin Signal Name
1 RX-
2 Ground
3 +5 Volt, fused
4 Ground
5 TX-
6 +RX
7 Ground
8 Ground
9 +TX

Token Ring UTP Port Pinouts

Table C-15 shows the Token Ring UTP port pinouts used by the 1E1R 2-Slot module.


Table C-15: Token Ring UTP Port (DB-9) Pinouts
RJ-45 Pins Signal
1 GND
2 GND
3 Tx
4 Rx
5 Tx
6 Rx
7 GND
8 Not used

BRI Pinouts

The BRI port pinouts are shown in Table C-16.


Table  C-16: BRI Port (RJ-45) Pinouts
8 Pin1 TE1 NT2 Polarity
3 Transmit Receive +
4 Receive Transmit +
5 Receive Transmit -
6 Transmit Receive -
Caution To prevent damage to the system, make certain you connect the BRI cable to the BRI connector only and not to any other RJ-45 connector.

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.

CT1/PRI Pinouts

Two standard T1 serial cables are available for the CT1/PRI module: null-modem and straight-through. A straight-through cable connects the router to an external CSU. Null-modem cables are used for back-to-back operation and testing.

The T1 interface cable has two 15-pin DB connectors at each end to connect the CT1/PRI with the external T1 CSU. Figure C-10 shows the T1 interface cable, connectors, and pinouts. Table C-17 lists the pinouts for the null-modem T1 cable and Table C-18 lists the pinouts for the straight-through T1 cable.


Figure C-10: T1 Interface Cable




Table  C-17: Null-Modem T1 Cable Pinouts
15-Pin DB Connector 15-Pin DB Connector
Signal Pin Pin Signal
Transmit Tip 1 3 Receive Tip
Receive Tip 3 1 Transmit Tip
Transmit Ring 9 11 Receive Ring
Receive Ring 11 9 Transmit Ring

Table  C-18: Straight-Through T1 Cable Pinouts
15-Pin DB Connector 15-Pin DB Connector
Signal Pin Pin Signal
Transmit Tip 1 1 Transmit Tip
Transmit Ring 9 9 Transmit Ring
Receive Tip 3 3 Receive Tip
Receive Ring 11 11 Receive Ring

CT1/PRI-CSU Pinouts

Table C-19 lists the CT1/PRI-CSU module port pinouts. Use a straight-through RJ-48C-to-RJ-48C cable to connect the T1 port to an RJ-48C jack.


Table  C-19: CT1/PRI-CSU module Port (RJ-48C) Pinouts
RJ-48C Pin Description
1 Receive Ring
2 Receive Tip
4 Ring
5 Tip

CE1/PRI Pinouts

Cisco Systems makes four cables for the CE1/PRI module s. All four have DB-15 connectors on the CE1/PRI end and either BNC, DB-15, Twinax, or RJ-45 connectors on the network end. Figure C-11, to Figure C-14 show the CE1/PRI interface cables.


Figure C-11: E1 Interface Cable for 75-Ohm, Unbalanced Connections with BNC Connectors




Figure C-12: E1 Interface Cable for 120-Ohm, Balanced Connections with DB-15 Connectors




Figure C-13: E1 Interface Cable for 120-Ohm, Balanced Connections with Twinax Connectors




Figure C-14: E1 Interface Cable for 120-Ohm, Balanced Connections with an RJ-45 Connector



Table C-20 lists the Pinouts for the CE1/PRI interface cables.


Table  C-20: E1 Interface Cable Pinouts
CE1/PRI End Network End
DB-15 BNC DB-15 Twinax RJ-45
Pin Signal1 Signal Pin Signal Pin Signal Pin Signal
9 TX Tip TX Tip 1 TX Tip TX-1 TX Tip 1 TX Tip
2 TX Ring TX Shield 9 TX Ring TX-2 TX Ring 2 TX Ring
10 TX Shield - 2 TX Shield Shield TX Shield 3 TX Shield
8 RX Tip RX Tip 3 RX Tip RX-1 RX Tip 4 RX Tip
15 RX Ring RX Shield 11 RX Ring RX-2 RX Ring 5 RX Ring
7 RX Shield - 4 RX Shield Shield RX Shield 6 RX Shield

1 TX = transmit. RX = receive.

Switched 56 Pinouts

The 1-port 4-wire 56 kbps DSU/CSU WAN interface card uses a straight-through RJ-48S-to-RJ-48S cable. Table C-21 provides pinouts.


Table  C-21: RJ-48S Straight-Through Cable Pinouts
RJ-48S Pins2 Signal
1 Receive Ring
2 Receive Tip
7 Ring
8 Tip

1 Pins 1, 2, 7, and 8 are not used.
2 Pins 3, 4, 5, and 6 are not used.

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