cc/td/doc/product/access/acs_fix/cis2500/2509
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Table of Contents

Cable Specifications

Cable Specifications

This appendix provides the following pinout information:

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 Table C-16 and Table C-17).


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 - -

1 Any 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

1 Any 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  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-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 Pin2 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-5: EIA/TIA-232 DCE Cable Pinout (DB-60 to DB-25)
60 Pin3 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-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 Pin4 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-7: EIA/TIA-449 DCE Cable Pinout (DB-60 to DB-37)
60 Pin5 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-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 Pin6 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-9: V.35 DCE Cable Pinout (DB-60 to 34-Pin)
60 Pin7 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-5 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 Pin8 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-11: X.21 DCE Cable Pinout (DB-60 to DB-15)
60 Pin9 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
-

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)
Pin10 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

Token Ring Pinout

Table C-13 lists the pinout for the Token Ring interface port.


Table  C-13: Token Ring Port Pinout (DB-9)
9 Pin11 Signal
1 Receive
3 +5V1
5 Transmit
6 Receive
9 Transmit

1 600 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. Table C-14 contains the pinout for the RJ-45 end, and Table C-15 contains the pinout for the 68-pin SCSI type connector.


Figure C-7: Asynchronous Serial Interface Breakout Cable Assembly




Table  C-14: Asynchronous Breakout Cable Pinout (8-Pin RJ-45)
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 -->
Note The Asynchronous breakout cable is equivalent to a console or auxiliary port with a roll-over RJ-45 cable attached. See Table C-17 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 Table C-16 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.)


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 Table C-17 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

1 The female data terminal equipment (FDTE) adapter that is available from Cisco is labeled "Terminal."
2 The 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 MMOD2 Modem3

1 The FDTE RJ-45-to-DB-25 adapter is labeled "Terminal."
2 The MMOD RJ-45-to-DB-25 adapter is labeled "Modem."
3 The asynchronous breakout cable (see Table C-14 and Table C-15) is functionally equivalent to a roll-over cable.

1 &&Center&&Any pin not referenced is not connected.
2 &&Center&&Any pin not referenced is not connected.
3 &&Center&&Any pin not referenced is not connected.
4 &&Center&&Any pin not referenced is not connected.
5 &&Center&&Any pin not referenced is not connected.
6 &&Center&&Any pin not referenced is not connected.
7 Any pin not referenced is not connected.
8 Any pin not referenced is not connected.
9 Any pin not referenced is not connected.
10 &&Center&&Any pin not referenced is not connected.
11 Pins 2, 4, 7, and 8 are ground.

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