Cabling Specifications

This appendix provides cable pinout descriptions for the Cisco 4000 series routers.

Note All pins not listed are not connected.

Following are the signal summaries contained in this appendix:

EIA/TIA-232 console and auxiliary cable
- Console and Auxiliary Port Pinouts on page 3
Serial DTE and DCE EIA/TIA-232 cables
Serial DTE and DCE EIA/TIA-449 cables
- EIA/TIA-449 Dual Serial Module Cable Assembly on page 23
- EIA/TIA-449 Four-Port Serial Module Cable Assembly on page 25
Serial DTE and DCE V.35 cables
Serial DTE and DCE X.21 cables
Serial DTE EIA-530 cables
- EIA-530 Dual Serial Module Cable Assembly on page 67
- EIA-530 Four-Port Serial Module Cable Assembly on page 69
HSSI cables
- HSSI Interface Cable on page 73
- HSSI Null- Modem Cable on page 74
Ethernet cables
Token Ring cables
- Token Ring Port Pinouts on page 82
BRI cables
- BRI Pinouts on page 83
Channelized T1 cable
- Channelized T1 Pinouts on page 84
Channelized E1 cable
- Channelized E1 Pinouts on page 85

The cables available from Cisco meet Federal Communications Commission (FCC) part 15J Class A requirements and Verband Deutscher Electrotechniker (VDE) 0871 Limit B levels. When constructing your own cables, refer to the appropriate documentation regarding interference considerations and cable length limitations.

Console and Auxiliary Port Pinouts

Refer to Table A-1 when assembling an EIA/TIA-232 console cable or auxiliary port cable for the Cisco 4000-M and to Table A-2 when assembling an EIA/TIA-232 console cable or auxiliary port cable for the Cisco 4500-M, Cisco 4700-M, or Cisco 4800-M.

Table A-1: Cisco 4000-M Console and Auxiliary Port Signals

Console Port			Auxiliary Port
DCE DB-25 Connector			DCE DB-25 Connector
Pin	Signal Name	Input/Output	Pin	Signal Name	Input/Output
1	Frame GND¹	-	1	Frame GND	-
2	TXD	Input	2	TXD	Output
3	RXD	Output	3	RXD	Input
4	RTS	Shorted to pin 5	4	RTS	Output
5	CTS	Shorted to pin 4	5	CTS	Input
6	Shorted to pin 8	Output	7	GND	-
7	GND	-	8	CD	Input
8	CD²	Output	20	DTR	Output
20	DTR	Input	22	Ring Indicator	Input

¹ GND = Ground
² CD = Carrier Detect

**Table A-2: Cisco 4500-M, Cisco 4700-M, or Cisco 4800-M Console Port Signals**
Console Port
DCE DB-25 Connector
Pin	Signal Name	Direction
1	Frame Ground	-
2	Received Data	Input
3	Transmitted Data	Output
4	Request To Send	Looped to Clear To Send
5	Clear To Send	Looped to Request To Send
6	Connected to Pin 8	Output
7	Signal Ground	-
8	Data Carrier Detect	Output
20	Data Terminal Ready	Input

Table A-3: Cisco 4500-M and Cisco 4700-M Auxiliary Port Signals

Auxiliary Port
DCE DB-25 Connector
Pin	Signal Name	Direction
1	Frame Ground	-
2	Transmitted Data	Output
3	Received Data	Input
4	Request To Send	Output
5	Clear To Send	Input
7	Signal Ground	-
8	Data Carrier Detect	Input
20	Data Terminal Ready	Output

Serial Cables

All 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 that follow list the signal pinouts for both the DTE-mode and DCE-mode serial port adapter cables for each serial interface type.

Note All four-port serial network processor modules use a universal high-density, 60-pin receptacle; all of the older dual serial network processor modules use a 50-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.) The dual serial and four-port serial module pinouts are listed separately.

EIA/TIA-232 Dual Serial Module Cable Assembly

Figure A-1 shows the dual serial module EIA/TIA-232 cable assembly. Table A-4 lists the DTE and DCE pinouts.

Figure A-1: Dual Serial EIA/TIA-232 Cable Assembly

Table A-4: Dual Serial Module EIA/TIA-232 DTE and DCE Serial Cable Pinouts
(Continued)
72-0670-01 DTE Connections			72-0736-01 DCE Connections
50 Pin	25 Pin	Type	50 Pin	25 Pin	Signal	Type
J1-3	J1-36		J1-3	J1-36	MUX
J1-39 J1-40	J2-5 J2-4	Twisted pair	J1-47 J1-17	J2-24 J1-38	SCTE DCE	Twisted pair
J1-9 J1-42	J2-8 J2-6	Twisted pair	J1-40 J1-39	J2-5 J2-4	CTS RTS	Twisted pair
J1-11 J1-44	J2-2 J2-7	Twisted pair	J1-14 J1-30	J2-8 J2-6	DCD DSR	Twisted pair
J1-46 J1-30	J2-3 J2-20	Twisted pair	J1-46 J1-44	J2-2 J2-7	TXD GND	Twisted pair
J1-14 J1-47	J2-18 J2-17	Twisted pair	J1-11 J1-42	J2-3 J2-20	RXD DTR	Twisted pair
J1-31 J1-15	J2-15 J2-1	Twisted pair	J1-9 J1-23	J2-18 J2-17	LTST RXC	Twisted pair
J1-16	J2-24	Twisted pair	J1-16 J1-15	J2-15 J2-1	TXC Chassis ground	Twisted pair

EIA/TIA-232 Four-Port Serial Module Cable Assembly

Figure A-2 shows the serial module EIA/TIA-232 cable assembly that is used on the NP-4T and the high-speed serial ports on the NP-2T16S; Table A-5 lists the DTE pinouts; and Table A-6 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

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

**Table A-5: Four-Port Serial EIA/TIA-232 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 A-6: Four-Port Serial 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/TIA232 Octal Serial Cable Assembly

Figure A-3 shows the compact octal cable used on the NP-2T and NP-2T16S-RS232 module low-speed ports.Table A-7 lists connector pinouts for the DTE serial cable, CAB-OCT-232-MT. Table A-8 lists connector pinouts for the DCE serial cable, CAB-OCT-232-FC.

Figure A-3: Low-Speed EIA/TIA-232 Compact Octal Serial Cable

**Table A-7: Low-Speed EIA/TIA-232 DTE Compact Octal Serial Cable Pinouts**
Router End (200-Position Plug)				Network End (25-Pin Connectors)
Pin	Signal	Note	Direction	Signal	Pin
J8-175 J8-176	MODE_0 GROUND	Shorting Group	-
J8-26 J8-25	MODE_DCE GROUND	Shorting Group	-
	SHIELD_GROUND	Braid		SHIELD GND	J0-1
J8-1	O_TXD/RXD+ Not used	Twisted pair # 1	-->	TXD Not used	J0-2 J0-7
J8-5	I_RXD/TXD+ Not used	Twisted pair #3	<--	RXD Not used	J0-3 J0-7
J8-16 J8-14	O_RTS/CTS+ O_DTR/DSR+	Twisted pair #7	--> -->	RTS DTR	J0-4 J0-20
J8-23 J8-21	I_CTS/RTS+ I_DSR/DTR+	Twisted pair #8	<-- <--	CTS DSR	J0-5 J0-6
J8-12 J8-11	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	<--	DCD SIG GND	J0-8 J0-7
J8-9	IO_TXC/TXC+ Not used	Twisted pair #5	<--	TXC Not used	J0-15 J0-7
J8-7	I_RXC/TXCE+ Not used	Twisted pair #4	<--	RXC Not used	J0-17 J0-7
J8-19 J8-18	O_LL/NIL+ SIG_GROUND	Twisted pair #9	-->	LTST SIG GND	J0-18 J0-7
J8-3	O_TXCE/RXC+ Not used	Twisted pair #2	-->	TXCE Not used	J0-24 J0-7
	SHIELD_GROUND	Braid		SHIELD GND	J1-1
J8-50	O_TXD/RXD+ Not used	Twisted pair # 1	-->	TXD Not used	J1-2 J1-7
J8-46	I_RXD/TXD+ Not used	Twisted pair #3	<--	RXD Not used	J1-3 J1-7
J8-35 J8-37	O_RTS/CTS+ O_DTR/DSR+	Twisted pair #7	--> -->	RTS DTR	J1-4 J1-20
J8-28 J8-30	I_CTS/RTS+ I_DSR/DTR+	Twisted pair #8	<-- <--	CTS DSR	J1-5 J1-6
J8-39 J8-40	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	<--	DCD SIG GND	J1-8 J1-7
J8-42	IO_TXC/TXC+ Not used	Twisted pair #5	<--	TXC Not used	J1-15 J1-7
J8-44	I_RXC/TXCE+ Not used	Twisted pair #4	<--	RXC Not used	J1-17 J1-7
J8-32 J8-33	O_LL/NIL+ SIG_GROUND	Twisted pair #9	-->	LTST SIG GND	J1-18 J1-7
J8-48	O_TXCE/RXC+ Not used	Twisted pair #2	-->	TXCE Not used	J1-24 J1-7
	SHIELD_GROUND	Braid		SHIELD GND	J2-1
J8-51	O_TXD/RXD+ Not used	Twisted pair # 1	-->	TXD Not used	J2-2 J2-7
J8-55	I_RXD/TXD+ Not used	Twisted pair #3	<--	RXD Not used	J2-3 J2-7
J8-66 J8-64	O_RTS/CTS+ O_DTR/DSR+	Twisted pair #7	--> -->	RTS DTR	J2-4 J2-20
J8-73 J8-71	I_CTS/RTS+ I_DSR/DTR+	Twisted pair #8	<-- <--	CTS DSR	J2-5 J2-6
J8-62 J8-61	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	<--	DCD SIG GND	J2-8 J2-7
J8-59	IO_TXC/TXC+ Not used	Twisted pair #5	<--	TXC Not used	J2-15 J2-7
J8-57	I_RXC/TXCE+ NOT USED	Twisted pair #4	<--	RXC Not used	J2-17 J2-7
J8-69 J8-68	O_LL/NIL+ SIG_GROUND	Twisted pair #9	-->	LTST SIG GND	J2-18 J2-7
J8-53	O_TXCE/RXC+ Not used	Twisted pair #2	-->	TXCE Not used	J2-24 J2-7
	SHIELD_GROUND	Braid		SHIELD GND	J3-1
J8-100	O_TXD/RXD+ Not used	Twisted pair # 1	-->	TXD Not used	J3-2 J3-7
J8-96	I_RXD/TXD+ Not used	Twisted pair #3	<--	RXD Not used	J3-3 J3-7
J8-85 J8-87	O_RTS/CTS+ O_DTR/DSR+	Twisted pair #7	--> -->	RTS DTR	J3-4 J3-20
J8-78 J8-80	I_CTS/RTS+ I_DSR/DTR+	Twisted pair #8	<-- <--	CTS DSR	J3-5 J3-6
J8-89 J8-90	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	<--	DCD SIG GND	J3-8 J3-7
J8-92	IO_TXC/TXC+ Not used	Twisted pair #5	<--	TXC Not used	J3-15 J3-7
J8-94	I_RXC/TXCE+ Not used	Twisted pair #4	<--	RXC Not used	J3-17 J3-7
J8-82 J8-83	O_LL/NIL+ SIG_GROUND	Twisted pair #9	-->	LTST SIG GND	J3-18 J3-7
J8-98	O_TXCE/RXC+ Not used	Twisted pair #2	-->	TXCE Not used	J3-24 J3-7
	SHIELD_GROUND	Braid		SHIELD GND	J4-1
J8-101	O_TXD/RXD+ Not used	Twisted pair # 1	-->	TXD Not used	J4-2 J4-7
J8-105	I_RXD/TXD+ Not used	Twisted pair #3	<--	RXD Not used	J4-3 J4-7
J8-116 J8-114	O_RTS/CTS+ O_DTR/DSR+	Twisted pair #7	--> -->	RTS DTR	J4-4 J4-20
J8-123 J8-121	I_CTS/RTS+ I_DSR/DTR+	Twisted pair #8	<-- <--	CTS DSR	J4-5 J4-6
J8-112 J8-111	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	<--	DCD SIG GND	J4-8 J4-7
J8-109	IO_TXC/TXC+ Not used	Twisted pair #5	<--	TXC NOT USED	J4-15 J4-7
J8-107	I_RXC/TXCE+ Not used	Twisted pair #4	<--	RXC Not used	J4-17 J4-7
J8-119 J8-118	O_LL/NIL+ SIG_GROUND	Twisted pair #9	-->	LTST SIG GND	J4-18 J4-7
J8-103	O_TXCE/RXC+ Not used	Twisted pair #2	-->	TXCE Not used	J4-24 J4-7
	SHIELD_GROUND	Braid		SHIELD GND	J5-A
J8-135 J8-137	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	-->	RTS DTR	J5-C J5-H
J8-128 J8-130	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<--	CTS DSR	J5-D J5-E
J8-139 J8-140	IO_DCD/DCD+ SIG_GROUND	Twisted Pair # 6	--> -->	RLSD SIG GND	J5-F J5-B
J8-132 J8-133	O_LL/NIL+ SIG_GROUND	Twisted Pair # 9	<-- <--	LT SIG GND	J5-K J5-B
J8-150 J8-149	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair # 1	<--	SD+ SD-	J5-P J5-S
J8-146 J8-145	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair # 3	<--	RD+ RD-	J5-R J5-T
J8-148 J8-147	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair # 2	<--	SCTE+ SCTE-	J5-U J5-W
J8-144 J8-143	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair # 4	-->	SCR+ SCR-	J5-V J5-X
J8-142 J8-141	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair # 5	-->	SCT+ SCT-	J5-Y J5-AA
	SHIELD_GROUND	Braid		SHIELD GND	J6-A
J8-166 J8-164	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	-->	RTS DTR	J6-C J6-H
J8-173 J8-171	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<--	CTS DSR	J6-D J6-E
J8-162 J8-161	IO_DCD/DCD+ SIG_GROUND	Twisted Pair # 6	--> -->	RLSD SIG GND	J6-F J6-B
J8-169 J8-168	O_LL/NIL+ SIG_GROUND	Twisted Pair # 9	<-- <--	LT SIG GND	J6-K J6-B
J8-151 J8-152	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair # 1	<--	SD+ SD-	J6-P J6-S
J8-155 J8-156	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair # 3	<--	RD+ RD-	J6-R J6-T
J8-153 J8-154	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair # 2	<--	SCTE+ SCTE-	J6-U J6-W
J8-157 J8-158	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair # 4	-->	SCR+ SCR-	J6-V J6-X
J8-159 J8-160	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair # 5	-->	SCT+ SCT-	J6-Y J6-AA
	SHIELD_GROUND	Braid		SHIELD GND	J7-A
J8-185 J8-187	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	-->	RTS DTR	J7-C J7-H
J8-178 J8-180	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<--	CTS DSR	J7-D J7-E
J8-189 J8-190	IO_DCD/DCD+ SIG_GROUND	Twisted Pair # 6	--> -->	RLSD SIG GND	J7-F J7-B
J8-182 J8-183	O_LL/NIL+ SIG_GROUND	Twisted Pair # 9	<-- <--	LT SIG GND	J7-K J7-B
J8-200 J8-199	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair # 1	<--	SD+ SD-	J7-P J7-S
J8-196 J8-195	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair # 3	<--	RD+ RD-	J7-R J7-T
J8-198 J8-197	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair # 2	<--	SCTE+ SCTE-	J7-U J7-W
J8-194 J8-193	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair # 4	-->	SCR+ SCR-	J7-V J7-X
J8-192 J8-191	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair # 5	-->	SCT+ SCT-	J7-Y J7-AA

**Table A-8: Low-Speed EIA/TIA-232 DCE Compact Octal Serial Cable Pinouts**
Router End (200-Position Plug)				Network End (25-Pin Connectors)
Pin	Signal	Note	Direction	Signal	Pin
J8-126 J8-125	MODE_1 GROUND	Shorting Group	-
J8-175 J8-176	MODE_0 GROUND	Shorting Group	-
	SHIELD_GROUND	Braid		SHIELD GND	J0-A
J8-23 J8-21	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J0-C J0-H
J8-16 J8-14	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J0-D J0-E
J8-12 J8-11	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J0-F J0-B
J8-20 J8-18	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J0-K J0-B
J8-5 J8-6	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J0-P J0-S
J8-1 J8-2	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J0-R J0-T
J8-7 J8-8	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J0-U J0-W
J8-3 J8-4	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J0-V J0-X
J8-9 J8-10	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J0-Y J0-AA
	SHIELD_GROUND	Braid		SHIELD GND	J1-A
J8-28 J8-30	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J1-C J1-H
J8-35 J8-37	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J1-D J1-E
J8-39 J8-40	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J1-F J1-B
J8-31 J8-33	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J1-K J1-B
J8-46 J8-45	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J1-P J1-S
J8-50 J8-49	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J1-R J1-T
J8-44 J8-43	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J1-U J1-W
J8-48 J8-47	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J1-V J1-X
J8-42 J8-41	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J1-Y J1-AA
	SHIELD_GROUND	Braid		SHIELD GND	J2-A
J8-73 J8-71	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J2-C J2-H
J8-66 J8-64	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J2-D J2-E
J8-62 J8-61	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J2-F J2-B
J8-70 J8-68	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J2-K J2-B
J8-55 J8-56	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J2-P J2-S
J8-51 J8-52	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J2-R J2-T
J8-57 J8-58	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J2-U J2-W
J8-53 J8-54	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J2-V J2-X
J8-59 J8-60	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J2-Y J2-AA
	SHIELD_GROUND	Braid		SHIELD GND	J3-A
J8-78 J8-80	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J3-C J3-H
J8-85 J8-87	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J3-D J3-E
J8-89 J8-90	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J3-F J3-B
J8-81 J8-83	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J3-K J3-B
J8-96 J8-95	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J3-P J3-S
J8-100 J8-99	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J3-R J3-T
J8-94 J8-93	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J3-U J3-W
J8-98 J8-97	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J3-V J3-X
J8-92 J8-91	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J3-Y J3-AA
	SHIELD_GROUND	Braid		SHIELD GND	J4-A
J8-123 J8-121	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J4-C J4-H
J8-116 J8-114	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J4-D J4-E
J8-112 J8-111	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J4-F J4-B
J8-120 J8-118	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J4-K J4-B
J8-105 J8-106	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J4-P J4-S
J8-101 J8-102	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J4-R J4-T
J8-107 J8-108	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J4-U J4-W
J8-103 J8-104	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J4-V J4-X
J8-109 J8-110	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J4-Y J4-AA
	SHIELD_GROUND	Braid		SHIELD GND	J5-A
J8-128 J8-130	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J5-C J5-H
J8-135 J8-137	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J5-D J5-E
J8-139 J8-140	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J5-F J5-B
J8-131 J8-133	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J5-K J5-B
J8-146 J8-145	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J5-P J5-S
J8-150 J8-149	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J5-R J5-T
J8-144 J8-143	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J5-U J5-W
J8-148 J8-147	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J5-V J5-X
J8-142 J8-141	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J5-Y J5-AA
	SHIELD_GROUND	Braid		SHIELD GND	J6-A
J8-173 J8-171	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J6-C J6-H
J8-166 J8-164	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J6-D J6-E
J8-162 J8-161	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J6-F J6-B
J8-170 J8-168	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J6-K J6-B
J8-155 J8-156	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J6-P J6-S
J8-151 J8-152	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J6-R J6-T
J8-157 J8-158	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J6-U J6-W
J8-153 J8-154	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J6-V J6-X
J8-159 J8-160	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J6-Y J6-AA
	SHIELD_GROUND	Braid		SHIELD GND	J7-A
J8-178 J8-180	I_CTS/RTS+ I_DSR/DTR+	Twisted Pair # 8	<-- <--	RTS DSR	J7-C J7-H
J8-185 J8-187	O_RTS/CTS+ O_DTR/DSR+	Twisted Pair # 7	--> -->	CTS DTR	J7-D J7-E
J8-189 J8-190	IO_DCD/DCD+ SIG_GROUND	Twisted Pair #6	-->	RLSD SIG GND	J7-F J7-B
J8-181 J8-183	I_NIL/LL+ SIG_GROUND	Twisted Pair #9	<--	LT SIG GND	J7-K J7-B
J8-196 J8-195	I_RXD/TXD+ I_RXD/TXD-	Twisted Pair #3	<-- <--	SD+ SD-	J7-P J7-S
J8-200 J8-199	O_TXD/RXD+ O_TXD/RXD-	Twisted Pair #1	--> -->	RD+ RD-	J7-R J7-T
J8-194 J8-193	I_RXC/TXCE+ I_RXC/TXCE-	Twisted Pair #4	<-- <--	SCTE+ SCTE-	J7-U J7-W
J8-198 J8-197	O_TXCE/RXC+ O_TXCE/RXC-	Twisted Pair #2	--> -->	SCR+ SCR-	J7-V J7-X
J8-192 J8-191	IO_TXC/TXC+ IO_TXC/TXC-	Twisted Pair #5	--> -->	SCT+ SCT-	J7-Y J7-AA

EIA/TIA-449 Dual Serial Module Cable Assembly

Figure A-4 shows the dual serial module EIA/TIA-449 cable assembly for cable CAB-NP449T and CAB-NP449T. Table A-9 lists the DTE and DCE pinouts and signal descriptions.

Figure A-4: Dual Serial Module EIA/TIA-449 Cable Assembly

**Table A-9: Dual Serial Module EIA/TIA-449 DTE and DCE Cable Pinouts (Continued)**
72-0672-01 DTE Connection Table			72-0738-01 DCE Connection Table
50 Pin	37 Pin	Type	50 Pin	37 Pin	Type	Signal Name
J1-5	J1-38		J1-5	J1-38		MUX
J1-7	J2-10		J1-13	J2-10		LL
J1-1 J1-34	J2-4 J2-22	Twisted pair	J1-35 J1-19	J2-4 J2-22	Twisted pair	TXD+ TXD-
J1-2 J1-18	J2-5 J2-23	Twisted pair	J1-43 J1-27	J2-5 J2-23	Twisted pair	SCT+ SCT-
J1-35 J1-19	J2-6 J2-24	Twisted pair	J1-1 J1-34	J2-6 J2-24	Twisted pair	RXD+ RXD-
J1-4 J1-20	J2-7 J2-25	Twisted pair	J1-6 J1-22	J2-7 J2-25	Twisted pair	RTS+ RTS-
J1-37 J1-21	J2-8 J2-26	Twisted pair	J1-49 J1-50	J2-8 J2-26	Twisted pair	SCR+ SCR-
			J1-17	J1-44		DCE
J1-22 J1-6	J2-27 J2-9	Twisted pair	J1-20 J1-4	J2-27 J2-9	Twisted pair	CTS- CTS+
J1-8 J1-24	J2-11 J2-29	Twisted pair	J1-41 J1-25	J2-11 J2-29	Twisted pair	DSR+ DSR-
J1-41 J1-25	J2-12 J2-30	Twisted pair	J1-8 J1-24	J2-12 J2-30	Twisted pair	DTR+ DTR-
J1-10 J1-26	J2-13 J2-31	Twisted pair	J1-10 J1-26	J2-13 J2-31	Twisted pair	RLSD+ RLSD-
J1-43 J1-27	J2-17 J2-35	Twisted pair	J1-37 J1-21	J2-17 J2-35	Twisted pair	SCTE+ SCTE-
J1-36 J1-15	J2-19 J2-1	Twisted pair	J1-36 J1-15	J2-19 J2-1	Twisted pair	Ground Chassis ground
J1-44 J1-48	J2-37 J2-20	Twisted pair	J1-44 J1-48	J2-37 J2-20	Twisted pair	Ground Ground

EIA/TIA-449 Four-Port Serial Module Cable Assembly

Figure A-5 shows the four-port EIA/TIA-449 cable assembly that is used on the NP-4T and the high-speed serial ports on the NP-2T16S; Table A-10 lists the DTE pinouts; Table A-11 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

Figure A-5: EIA/TIA-449 Four-Port Module Cable Assembly

**Table A-10: 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 A-11: EIA/TIA-449 DCE Four-Port 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 Dual Serial Module Cable Assembly

Figure A-6 shows the dual serial module V.35 cable assembly with the resistor (1/4 watt, ±1%, 301 ohms). Table A-12 lists the DTE pinouts; Table A-13 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

Figure A-6: Dual Serial Module V.35 Cable Assembly

**Table A-12: Dual Serial Module V.35 DTE Cable Pinouts (Continued)**
72-0671-02 DTE Connections
50 Pin	34 Pin	Type	Signal Name	Direction
J1-3	J1-36	Jumper	MUX	To ground
J1-5	J1-38	Jumper	MUX	To ground
J1-14 J1-Shield	J2-K J2-Shield	Twisted pair	LTST Not used	-->
J1-2 J1-18	J2-Y J2-AA	Twisted pair	SCT+ SCT-	<-- <--
J1-12 J1-28	J2-P J2-S	Twisted pair	TXD+ TXD-	--> -->
J1-35 J1-19	J2-R J2-T	Twisted pair	RXD+ RXD-	<-- <--
J1-37 J1-21	J2-V J2-X	Twisted pair	SCR+ SCR-	<-- <--
J1-45 J1-29	J2-U J2-W	Twisted pair	SCTE+ SCTE-	--> -->
J1-42 J1-Shield	J2-E J2-Shield	Twisted pair	DSR Not used	<--
J1-9 J1-48	J2-F J2-A	Twisted pair	RLSD Ground	<-- <--
J1-40 J1-Shield	J2-C J2-Shield	Twisted pair	RTS Not used	-->
J1-2 J1-18	J1-3 J1-5	Resistor Resistor	SCT+ SCT-	R to Ground
J1-35 J1-19	J1-36 J1-38	Resistor Resistor	RXD+ RXD-	R to Ground
J1-37 J1-21	J1-44 J1-48	Resistor Resistor	SCR+ SCR-	R to Ground
J1-30 J1-44	J2-H J2-B	Twisted pair	DTR Ground	--> -->
J1-39 J1-Shield	J2-D J2-Shield	Twisted pair	CTS Not used	-->
J1-Shield J1-Shield	J2-Shield J2-Shield	Twisted pair	Not used Not used
J1-Shield	J2-Shield	Single	Not used

**Table A-13: Dual Serial Module V.35 DCE Cable Pinouts (Continued)**
72-0740-02 DCE Connections
50 Pin	34 Pin	Type	Signal Name	Direction
J1-3	J1-36	Jumper	MUX	To ground
J1-5	J1-38	Jumper	MUX	To ground
J1-9 J1-Shield	J2-K J2-Shield	Twisted pair	LTST	<--
J1-45 J1-29	J2-Y J2-AA	Twisted pair	SCT+ SCT-	--> -->
J1-35 J1-19	J2-P J2-S	Twisted pair	TXD+ TXD-	<-- <--
J1-12 J1-28	J2-R J2-T	Twisted pair	RXD + RXD-	--> -->
J1-32 J1-33	J2-V J2-X	Twisted pair	SCR+ SCR-	--> -->
J1-37 J1-21	J2-U J2-W	Twisted pair	SCTE+ SCTE-	<-- <--
J1-30 J1-Shield	J2-E J2-Shield	Twisted pair	DSR	-->
J1-14 J1-48	J2-F J2-A	Twisted pair	RLSD Ground	--> -->
J1-39 J1-Shield	J2-C J2-Shield	Twisted pair	RTS Not used	<--
J1-17	J1-5	Jumper	DCE Mode	To ground
J1-Shield	J2-Shield	Single	Not used
J1-35¹ J1-19	J1-36 J1-38	Resistor Resistor	TXD+ TXD-	R to ground
J1-37 J1-21	J1-44 J1-48	Resistor Resistor	SCTE+ SCTE-	R to ground
J1-42 J1-44	J2-H J2-B	Twisted pair	DTR Ground	<-- <--
J1-40 J1-Shield	J2-D J2-Shield	Twisted pair	CTS Not used	-->
J1-Shield J1-Shield	J2-Shield J2-Shield	Twisted pair

¹ See Figure A-6. Resistor = 1/4W, ±1%, 301 ohms.

V.35 Four-Port Serial Module Cable Assembly

Figure A-7 shows the V.35 cable assembly that is used on the NP-4T and the high-speed serial ports on the NP-2T16S; Table A-13 lists the DTE pinouts; Table A-15 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

Figure A-7: Four-Port Serial Module V.35 Cable Assembly

**Table A-14: Four-Port Serial Module V.35 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 A-15: Four-Port Serial 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-

V.35 Octal Serial Cable Assembly

Figure A-8 shows the compact octal cable used on the NP-2T16S-V.35 module low-speed ports. Table A-16 lists pinouts for the DTE cable, and Table A-17 lists pinouts for the DCE cable.

Figure A-8: Low-Speed V.35 Compact Serial Cable

**Table A-16: Low-Speed V.35 DTE Compact Octal Serial Cable Pinouts**
Router End (200-Position Plug)				Network End (34-Pin Connectors)
Pin	Signal	Note	Direction	Signal	Pin
J8-126 J8-125	MODE_1 GROUND	Shorting Group	-
J8-175 J8-176	MODE_0 GROUND	Shorting Group	-
J8-26 J8-25	MODE_DCE GROUND	Shorting Group	-
	SHIELD_GROUND	Braid		SHIELD GND	J0-A
J8-16 J8-14	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J0-C J0-H
J8-23 J8-21	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J0-D J0-E
J8-12 J8-11	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J0-F J0-B
J8-19 J8-18	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J0-K J0-B
J8-1 J8-2	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J0-P J0-S
J8-5 J8-6	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J0-R J0-T
J8-3 J8-4	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J0-U J0-W
J8-7 J8-8	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J0-V J0-X
J8-9 J8-10	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J0-Y J0-AA
	SHIELD_GROUND	Braid		SHIELD GND	J1-A
J8-35 J8-37	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J1-C J1-H
J8-28 J8-30	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J1-D J1-E
J8-39 J8-40	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J1-F J1-B
J8-32 J8-33	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J1-K J1-B
J8-50 J8-49	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J1-P J1-S
J8-46 J8-45	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J1-R J1-T
J8-48 J8-47	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J1-U J1-W
J8-44 J8-43	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J1-V J1-X
J8-42 J8-41	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J1-Y J1-AA
	SHIELD_GROUND	Braid		SHIELD GND	J2-A
J8-66 J8-64	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J2-C J2-H
J8-73 J8-71	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J2-D J2-E
J8-62 J8-61	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J2-F J2-B
J8-69 J8-68	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J2-K J2-B
J8-51 J8-52	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J2-P J2-S
J8-55 J8-56	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J2-R J2-T
J8-53 J8-54	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J2-U J2-W
J8-57 J8-58	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J2-V J2-X
J8-59 J8-60	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J2-Y J2-AA
	SHIELD_GROUND	Braid		SHIELD GND	J3-A
J8-85 J8-87	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J3-C J3-H
J8-78 J8-80	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J3-D J3-E
J8-89 J8-90	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J3-F J3-B
J8-82 J8-83	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J3-K J3-B
J8-100 J8-99	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J3-P J3-S
J8-96 J8-95	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J3-R J3-T
J8-98 J8-97	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J3-U J3-W
J8-94 J8-93	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J3-V J3-X
J8-92 J8-91	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J3-Y J3-AA
	SHIELD_GROUND	Braid		SHIELD GND	J4-A
J8-116 J8-114	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J4-C J4-H
J8-123 J8-121	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J4-D J4-E
J8-112 J8-111	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J4-F J4-B
J8-119 J8-118	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J4-K J4-B
J8-101 J8-102	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J4-P J4-S
J8-105 J8-106	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J4-R J4-T
J8-103 J8-104	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J4-U J4-W
J8-107 J8-108	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J4-V J4-X
J8-109 J8-110	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J4-Y J4-AA
	SHIELD_GROUND	Braid		SHIELD GND	J5-A
J8-135 J8-137	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J5-C J5-H
J8-128 J8-130	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J5-D J5-E
J8-139 J8-140	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J5-F J5-B
J8-132 J8-133	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J5-K J5-B
J8-150 J8-149	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J5-P J5-S
J8-146 J8-145	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J5-R J5-T
J8-148 J8-147	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J5-U J5-W
J8-144 J8-143	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J5-V J5-X
J8-142 J8-141	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J5-Y J5-AA
	SHIELD_GROUND	Braid		SHIELD GND	J6-A
J8-166 J8-164	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J6-C J6-H
J8-173 J8-171	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J6-D J6-E
J8-162 J8-161	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J6-F J6-B
J8-169 J8-168	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J6-K J6-B
J8-151 J8-152	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J6-P J6-S
J8-155 J8-156	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J6-R J6-T
J8-153 J8-154	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J6-U J6-W
J8-157 J8-158	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J6-V J6-X
J8-159 J8-160	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J6-Y J6-AA
	SHIELD_GROUND	Braid		SHIELD GND	J7-A
J8-185 J8-187	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	RTS DTR	J7-C J7-H
J8-178 J8-180	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	CTS DSR	J7-D J7-E
J8-189 J8-190	IO_DCD/DCD+ SIG_GROUND	Twisted pair # 6	<--	RLSD SIG GND	J7-F J7-B
J8-182 J8-183	O_LL/NIL+ SIG_GROUND	Twisted pair # 9	-->	LT SIG GND	J7-K J7-B
J8-200 J8-199	O_TXD/RXD+ O_TXD/RXD-	Twisted pair # 1	--> -->	SD+ SD-	J7-P J7-S
J8-196 J8-195	I_RXD/TXD+ I_RXD/TXD-	Twisted pair # 3	<-- <--	RD+ RD-	J7-R J7-T
J8-198 J8-197	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair # 2	--> -->	SCTE+ SCTE-	J7-U J7-W
J8-194 J8-193	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair # 4	<-- <--	SCR+ SCR-	J7-V J7-X
J8-192 J8-191	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair # 5	<-- <--	SCT+ SCT-	J7-Y J7-AA

**Table A-17: Low-Speed V.35 DCE Compact Octal Serial Cable Pinouts**
Router End (200-Position Plug)				Network End (34-Pin Connectors)
Pin	Signal	Note	Direction	Signal	Pin
J8-126 J8-125	MODE_1 GROUND	Shorting Group	-
J8-175 J8-176	MODE_0 GROUND	Shorting Group	-
	SHIELD_GROUND	Braid		SHIELD GND	J0-A
J8-23 J8-21	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J0-C J0-H
J8-16 J8-14	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J0-D J0-E
J8-12 J8-11	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J0-F J0-B
J8-20 J8-18	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J0-K J0-B
J8-5 J8-6	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J0-P J0-S
J8-1 J8-2	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J0-R J0-T
J8-7 J8-8	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J0-U J0-W
J8-3 J8-4	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J0-V J0-X
J8-9 J8-10	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J0-Y J0-AA
	SHIELD_GROUND	Braid		SHIELD GND	J1-A
J8-28 J8-30	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J1-C J1-H
J8-35 J8-37	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J1-D J1-E
J8-39 J8-40	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J1-F J1-B
J8-31 J8-33	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J1-K J1-B
J8-46 J8-45	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J1-P J1-S
J8-50 J8-49	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J1-R J1-T
J8-44 J8-43	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J1-U J1-W
J8-48 J8-47	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J1-V J1-X
J8-42 J8-41	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J1-Y J1-AA
	SHIELD_GROUND	Braid		SHIELD GND	J2-A
J8-73 J8-71	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J2-C J2-H
J8-66 J8-64	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J2-D J2-E
J8-62 J8-61	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J2-F J2-B
J8-70 J8-68	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J2-K J2-B
J8-55 J8-56	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J2-P J2-S
J8-51 J8-52	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J2-R J2-T
J8-57 J8-58	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J2-U J2-W
J8-53 J8-54	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J2-V J2-X
J8-59 J8-60	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J2-Y J2-AA
	SHIELD_GROUND	Braid		SHIELD GND	J3-A
J8-78 J8-80	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J3-C J3-H
J8-85 J8-87	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J3-D J3-E
J8-89 J8-90	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J3-F J3-B
J8-81 J8-83	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J3-K J3-B
J8-96 J8-95	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J3-P J3-S
J8-100 J8-99	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J3-R J3-T
J8-94 J8-93	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J3-U J3-W
J8-98 J8-97	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J3-V J3-X
J8-92 J8-91	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J3-Y J3-AA
	SHIELD_GROUND	Braid		SHIELD GND	J4-A
J8-123 J8-121	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J4-C J4-H
J8-116 J8-114	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J4-D J4-E
J8-112 J8-111	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J4-F J4-B
J8-120 J8-118	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J4-K J4-B
J8-105 J8-106	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J4-P J4-S
J8-101 J8-102	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J4-R J4-T
J8-107 J8-108	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J4-U J4-W
J8-103 J8-104	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J4-V J4-X
J8-109 J8-110	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J4-Y J4-AA
	SHIELD_GROUND	Braid		SHIELD GND	J5-A
J8-128 J8-130	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J5-C J5-H
J8-135 J8-137	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J5-D J5-E
J8-139 J8-140	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J5-F J5-B
J8-131 J8-133	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J5-K J5-B
J8-146 J8-145	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J5-P J5-S
J8-150 J8-149	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J5-R J5-T
J8-144 J8-143	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J5-U J5-W
J8-148 J8-147	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J5-V J5-X
J8-142 J8-141	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J5-Y J5-AA
	SHIELD_GROUND	Braid		SHIELD GND	J6-A
J8-173 J8-171	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J6-C J6-H
J8-166 J8-164	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J6-D J6-E
J8-162 J8-161	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J6-F J6-B
J8-170 J8-168	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J6-K J6-B
J8-155 J8-156	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J6-P J6-S
J8-151 J8-152	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J6-R J6-T
J8-157 J8-158	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J6-U J6-W
J8-153 J8-154	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J6-V J6-X
J8-159 J8-160	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J6-Y J6-AA
	SHIELD_GROUND	Braid		SHIELD GND	J7-A
J8-178 J8-180	I_CTS/RTS+ I_DSR/DTR+	Twisted pair # 8	<-- <--	RTS DSR	J7-C J7-H
J8-185 J8-187	O_RTS/CTS+ O_DTR/DSR+	Twisted pair # 7	--> -->	CTS DTR	J7-D J7-E
J8-189 J8-190	IO_DCD/DCD+ SIG_GROUND	Twisted pair #6	-->	RLSD SIG GND	J7-F J7-B
J8-181 J8-183	I_NIL/LL+ SIG_GROUND	Twisted pair #9	<--	LT SIG GND	J7-K J7-B
J8-196 J8-195	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #3	<-- <--	SD+ SD-	J7-P J7-S
J8-200 J8-199	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	RD+ RD-	J7-R J7-T
J8-194 J8-193	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #4	<-- <--	SCTE+ SCTE-	J7-U J7-W
J8-198 J8-197	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #2	--> -->	SCR+ SCR-	J7-V J7-X
J8-192 J8-191	IO_TXC/TXC+ IO_TXC/TXC-	Twisted pair #5	--> -->	SCT+ SCT-	J7-Y J7-AA

X.21 Dual Serial Module Cable Assembly

Figure A-9 shows the dual serial module X.21 cable assembly. Table A-18 lists the DTE pinouts; Table A-18 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

Figure A-9: Dual Serial Module X.21 Cable Assembly

**Table A-18: Dual Serial Module X.21 DTE Cable Pinouts**
72-0683-02 DTE Connections
From	Signal Name	Type	To	Signal Name
J1-5	MUX SEL		J1-38	GND
J1-36	449 GND		J2-8	X.21 GND
J1-41 J1-25	449 DTR	Jumper	J1-6 J1-22	449 CTS
J1-41 J1-25	449 DTR	Jumper	J1-8 J1-24	449 DSR
J1-43 J1-27	449 SCTE	Jumper	J1-37 J1-21	449 SCR
J1-1 J1-34	449 TXD	Twisted pair	J2-2 J2-9	X.21 TXD
J1-4 J1-20	449 RTS	Twisted pair	J2-3 J2-10	X.21 CTL
J1-35 J1-19	449 RXD	Twisted pair	J2-4 J2-11	X.21 RXD
J1-10 J1-26	449 RLSD	Twisted pair	J2-5 J2-12	X.21 IND
J1-2 J1-18	449 SCT	Twisted pair	J2-6 J2-13	X.21 CLK

**Table A-19: Dual Serial Module X.21 DCE Cable Pinouts**
72-0737-01 DCE Connections
From	Signal Name	Type	To	Signal Name
J1-5	MUX SEL		J1-38	GND
J1-36	449 GND		J2-8	X.21 GND
J1-41 J1-25	449 DSR	Jumper	J1-8 J1-24	449 DTR
J1-35 J1-19	449 TXD	Twisted pair	J2-2 J2-9	X.21 TXD
J1-6 J1-22	449-RTS	Twisted pair	J2-3 J2-10	X.21 CTL
J1-1 J1-34	449 RXD	Twisted pair	J2-4 J2-11	X.21 RXD
J1-10 J1-26	449 RLSD	Twisted pair	J2-5 J2-12	X.21 IND
J1-43 J1-27	449 SCT	Twisted pair	J2-6 J2-13	X.21 CLK
J1-17	DCE SEL		J1-44
J1-15	Chassis GND		J2-1

X.21 Four-Port Serial Module Cable Assembly

Figure A-10 shows the four-port serial X.21 cable assembly that is used on the NP-4T and the high-speed serial ports on the NP-2T16S; Table A-20 lists the DTE pinouts; Table A-21 lists the DCE pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

Figure A-10: Four-Port Serial Module X.21 Cable Assembly

Table A-20: Four-Port Serial X.21 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 A-21: Four-Port Serial X.21 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 -

X.21 Octal Serial Cable Assembly

Figure A-11 shows the compact octal cable used on the NP-2T16S-X21 module. Table A-22 lists pinouts for the DTE cable, and Table A-23 lists pinouts for the DCE cable.

Figure A-11: Low-Speed X.21 Compact Serial Cable

**Table A-22: Low-Speed X.21 DTE Compact Serial Cable Pinouts**
Router End (200-Position Plug)				Network End (15-Pin Connectors)
Pin	Signal	Note	Direction	Signal	Pin
J8-75 J8-76	MODE_2 GROUND	Shorting Group	-
J8-26 J8-25	MODE_DCE GROUND	Shorting Group	-
	SHIELD_GROUND	Braid		SHIELD GND	J0-1
J8-1 J8-2	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J0-2 J0-9
J8-16 J8-17	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J0-3 J0-10
J8-5 J8-6	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J0-4 J0-11
J8-23 J8-24	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J0-5 J0-12
J8-7 J8-8	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J0-6 J0-13
J8-11 J8-18	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J0-8 J0-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J1-1
J8-50 J8-49	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J1-2 J1-9
J8-35 J8-34	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J1-3 J1-10
J8-46 J8-45	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J1-4 J1-11
J8-28 J8-27	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J1-5 J1-12
J8-44 J8-43	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J1-6 J1-13
J8-40 J8-33	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J1-8 J1-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J2-1
J8-51 J8-52	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J2-2 J2-9
J8-66 J8-67	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J2-3 J2-10
J8-55 J8-56	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J2-4 J2-11
J8-73 J8-74	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J2-5 J2-12
J8-57 J8-58	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J2-6 J2-13
J8-61 J8-68	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J2-8 J2-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J3-1
J8-100 J8-99	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J3-2 J3-9
J8-85 J8-84	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J3-3 J3-10
J8-96 J8-95	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J3-4 J3-11
J8-78 J8-77	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J3-5 J3-12
J8-94 J8-93	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J3-6 J3-13
J8-90 J8-83	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J3-8 J3-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J4-1
J8-101 J8-102	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J4-2 J4-9
J8-116 J8-117	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J4-3 J4-10
J8-105 J8-106	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J4-4 J4-11
J8-123 J8-124	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J4-5 J4-12
J8-107 J8-108	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J4-6 J4-13
J8-111 J8-118	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J4-8 J4-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J5-1
J8-150 J8-149	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J5-2 J5-9
J8-135 J8-134	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J5-3 J5-10
J8-146 J8-145	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J5-4 J5-11
J8-128 J8-127	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J5-5 J5-12
J8-144 J8-143	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J5-6 J5-13
J8-140 J8-133	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J5-8 J5-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J6-1
J8-151 J8-152	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J6-2 J6-9
J8-166 J8-167	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J6-3 J6-10
J8-155 J8-156	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J6-4 J6-11
J8-173 J8-174	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J6-5 J6-12
J8-157 J8-158	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J6-6 J6-13
J8-161 J8-168	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J6-8 J6-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J7-1
J8-200 J8-199	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #1	--> -->	TRANSMIT+ TRANSMIT-	J7-2 J7-9
J8-185 J8-184	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #4	--> -->	CONTROL+ CONTROL-	J7-3 J7-10
J8-196 J8-195	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #2	<-- <--	RECEIVE+ RECEIVE-	J7-4 J7-11
J8-178 J8-177	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #5	<-- <--	INDICATION+ INDICATION-	J7-5 J7-12
J8-194 J8-193	I_RXC/TXCE+ I_RXC/TXCE-	Twisted pair #3	<-- <--	TIMING+ TIMING-	J7-6 J7-13
J8-190 J8-183	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J7-8 J7-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-

**Table A-23: Low-Speed X.21 DCE Compact Octal Serial Cable Pinouts**
Router End (200-Position Plug)				Network End (15-Pin Connectors)
Pin	Signal	Note	Direction	Signal	Pin
J8-75 J8-76	MODE_2 GROUND	Shorting Group	-
	SHIELD_GROUND	Braid		SHIELD GND	J0-1
J8-5 J8-6	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J0-2 J0-9
J8-23 J8-24	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J0-3 J0-10
J8-1 J8-2	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J0-4 J0-11
J8-16 J8-17	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J0-5 J0-12
J8-3 J8-4	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J0-6 J0-13
J8-11 J8-18	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J0-8 J0-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J1-1
J8-46 J8-45	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J1-2 J1-9
J8-28 J8-27	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J1-3 J1-10
J8-50 J8-49	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J1-4 J1-11
J8-35 J8-34	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J1-5 J1-12
J8-48 J8-47	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J1-6 J1-13
J8-40 J8-33	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J1-8 J1-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J2-1
J8-55 J8-56	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J2-2 J2-9
J8-73 J8-74	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J2-3 J2-10
J8-51 J8-52	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J2-4 J2-11
J8-66 J8-67	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J2-5 J2-12
J8-53 J8-54	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J2-6 J2-13
J8-61 J8-68	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J2-8 J2-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J3-1
J8-96 J8-95	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J3-2 J3-9
J8-78 J8-77	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J3-3 J3-10
J8-100 J8-99	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J3-4 J3-11
J8-85 J8-84	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J3-5 J3-12
J8-98 J8-97	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J3-6 J3-13
J8-90 J8-83	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J3-8 J3-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J4-1
J8-105 J8-106	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J4-2 J4-9
J8-123 J8-124	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J4-3 J4-10
J8-101 J8-102	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J4-4 J4-11
J8-116 J8-117	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J4-5 J4-12
J8-103 J8-104	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J4-6 J4-13
J8-111 J8-118	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J4-8 J4-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J5-1
J8-146 J8-145	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J5-2 J5-9
J8-128 J8-127	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J5-3 J5-10
J8-150 J8-149	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J5-4 J5-11
J8-135 J8-134	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J5-5 J5-12
J8-148 J8-147	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J5-6 J5-13
J8-140 J8-133	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J5-8 J5-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J6-1
J8-155 J8-156	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J6-2 J6-9
J8-173 J8-174	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J6-3 J6-10
J8-151 J8-152	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J6-4 J6-11
J8-166 J8-167	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J6-5 J6-12
J8-153 J8-154	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J6-6 J6-13
J8-161 J8-168	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J6-8 J6-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-
	SHIELD_GROUND	Braid		SHIELD GND	J7-1
J8-196 J8-195	I_RXD/TXD+ I_RXD/TXD-	Twisted pair #1	<-- <--	TRANSMIT+ TRANSMIT-	J7-2 J7-9
J8-178 J8-177	I_CTS/RTS+ I_CTS/RTS-	Twisted pair #4	<-- <--	CONTROL+ CONTROL-	J7-3 J7-10
J8-200 J8-199	O_TXD/RXD+ O_TXD/RXD-	Twisted pair #2	--> -->	RECEIVE+ RECEIVE-	J7-4 J7-11
J8-185 J8-184	O_RTS/CTS+ O_RTS/CTS-	Twisted pair #5	--> -->	INDICATION+ INDICATION-	J7-5 J7-12
J8-198 J8-197	O_TXCE/RXC+ O_TXCE/RXC-	Twisted pair #3	--> -->	TIMING+ TIMING-	J7-6 J7-13
J8-190 J8-183	SIG_GROUND SIG_GROUND	Twisted pair #6	-	SIG GND SIG GND	J7-8 J7-8
-	Not used Not used	Twisted pair #7	-	Not used Not used	-
-	Not used Not used	Twisted pair #8	-	Not used Not used	-
-	Not used Not used	Twisted pair #9	-	Not used Not used	-

EIA-530 Dual Serial Module Cable Assembly

Figure A-12 shows the dual serial module EIA-530 cable assembly and Table A-24 lists the EIA-530 DTE serial cable pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

Figure A-12: Dual Serial Module EIA-530 Cable Assembly

**Table A-24: Dual Serial Module EIA-530 DTE Serial Cable Pinouts (Continued)**
72-0732-01 Connections
50 Pin	Signal Name	Direction	25 Pin	Type
J1-5 J1-38	Looped		NC	Jumper
J1-1 J1-34	TXD+ TXD-	--> -->	J2-2 J2-14	Twisted pair
J1-35 J1-19	RXD+ RXD-	<-- <--	J2-3 J2-16	Twisted pair
J1-4 J1-20	RTS+ RTS-	--> -->	J2-4 J2-19	Twisted pair
J1-6 J1-22	CTS+ CTS-	<-- <--	J2-5 J2-13	Twisted pair
J1-10 J1-26	RLSD+ (RR+) RLSD- (RR-)	<-- <--	J2-8 J2-10	Twisted pair
J1-2 J1-18	SCT+ SCT-	<-- <--	J2-15 J2-12	Twisted pair
J1-37 J1-21	SCR+ SCR-	<-- <--	J2-17 J2-9	Twisted pair
J1-43 J1-27	SCTE+ (TT+) SCTE- (TT-)	<-- <--	J2-24 J2-11	Twisted pair
J1-7	LL	-->	J2-18	Twisted pair
J1-48 J1-36	Ground		J2-23 J2-7	Twisted pair
J1-15	Shield		J2-1	Single wire
J1-8 J1-24	DCE Ready Ground	<--	J2-6 J2-23	Twisted pair
J1-41	DTE Ready	-->	J2-20	Twisted pair

EIA-530 Four-Port Serial Module Cable Assembly

Figure A-13 shows the four-port serial module EIA-530 cable assembly that is used on the NP-4T and the high-speed serial ports on the NP-2T16S, Table A-25 lists the pinouts. Arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

Figure A-13: Four-Port Serial Module EIA-530 Cable Assembly

Table A-25: Four-Port Serial EIA-530 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.

E1-G.703/G.704 Cable Pinouts

Table A-26 shows the signal pinouts for each type of E1-G.703/G.704 interface cable. All cables use a DB-15 connector at the G.703/G.704 network processor module end.

Table A-26: E1-G.703/G.704 Adapter Cable Connector Pinouts

E1-G.703/G.704 Network Processor Module End		Network End
DB-15¹		DB-15	Null Modem DB-15	BNC	Twinax
Pin	Signal²	Pin	Pin	Signal	Pin	Signal
9	TX Tip	1	3	TX Tip	Tip	Signal
2	TX Ring	9	11	TX Shield	Ring	Signal
10	TX Shield	2	4	-	Shield	Shield
8	RX Tip	3	1	RX Tip	Tip	Signal
15	RX Ring	11	9	RX Shield	Ring	Signal
7	RX Shield	4	2	-	Shield	Shield

¹ Any pins not described in this table are not connected.
² TX = transmit; RX = receive.

The adapter cables for balanced mode are available with several connector types to accommodate connection standards in different countries. You must use the proprietary cables to connect the E1-G.703/G.704 port to your network. Cables for balanced and unbalanced modes are available with the following types of network-end connectors:

Unbalanced (75-ohm) coaxial cables with BNC connectors at the network end (used primarily for connection in the United Kingdom).
Balanced (120-ohm) with a DB-15 connector at the network end.
Balanced (120-ohm) twinaxial split cable at the network end, with separate transmit and receive cables, each with a twinax connector.

In addition to these cables, some connections require bare-wire connections (directly to terminal posts). See the E1-G.703/G.704 network processor module configuration note for complete information.

HSSI Cable Pinouts

Two types of cables are available for use with an HSSI network processor module:

CAB-HSI1=, an HSSI cable used to connect your router to an external DSU (and the HSSI network)
CAB-HNUL=, a null-modem HSSI cable used to connect two routers back-to-back. The Cisco 4000 series router can connect a Cisco 7000 family HIP, PA-H, or PA-2H.

HSSI Interface Cable

Figure A-14 shows the HSSI cable (product number CAB-HSI1= and part number 72-0710-xx). Table A-27 provides pinouts. The cable has a male DB-50 (SCSI) connector on each end.

Figure A-14: HSSI Interface Cable Connectors

**Table A-27: HSSI Interface Cable Pinouts (Continued)**
Signal Name	Pin No. + Side (Router End)	Direction¹	Pin No. - Side (DSU End)
SG (Signal Ground)	1	--	26
RT (Receive Timing)	2	<--	27
CA (DCE Available)	3	<--	28
RD (Receive Data Reserved)	4	<--	29
LC (Loopback circuit C)	5	<--	30
ST (Send Timing)	6	<--	31
SG (Signal Ground)	7	--	32
TA (DTE Available)	8	-->	33
TT (Terminal Timing)	9	-->	34
LA (Loopback Circuit A)	10	-->	35
SD (Send Data)	11	-->	36
LB (Loopback Circuit B)	12	-->	37
SG (Signal Ground)	13	--	38
5 (Ancillary to DCE)	14-18	-->	39-43
SG (Signal Ground)	19	--	44
5 (Ancillary from DCE)	20-24	<--	45-49
SG (Signal Ground)	25	--	50

¹ Router is + side (DTE). DSU is - side (DCE).

HSSI Null- Modem Cable

Figure A-14 shows the HSSI null-modem cable (product number CAB-HNUL= and part number 72-0727-xx). Table A-28 provides pinouts. The cable has a male DB-50 (SCSI) connector on each end.Null Modem Cable Connectors

**Table A-28: Null Modem Cable Pinouts (Continued)**
Signal Name	From Pins	Direction	To Pins	Signal Name
RT (Receive Timing)	2, 27	-->	9, 34	TT (Terminal Timing)
CA (DCE Available)	3, 28	-->	8, 33	TA (DTE Available)
RD (Receive Data)	4, 29	-->	11, 36	SD (Send Data)
LC (Loopback C)	5, 30	-->	10, 35	LA (Loopback A)
ST (Send Timing)	6, 31	-->	6, 31	ST (Send Timing)
TA (DTE Available)	8, 33	-->	3, 28	CA (DCE Available)
TT (Terminal Timing)	9, 34	-->	2, 27	RT (Receive Timing)
LA (Loopback A)	10, 35	-->	5, 30	LC (Loopback C)
SD (Send Data)	11, 36	-->	4, 29	RD (Receive Data)
GND (Ground)	1, 26, 7, 32, 13, 38, 19, 44, 25, 50		1, 26, 7, 32, 13, 38, 19, 44, 25, 50	GND (Ground)
Loopback (not connected)	12, 37
			12, 37	Loopback (not connected)
Not used	14-18, 20-24, 39-43, 45-49		14-18, 20-24, 39-43, 45-49	Not used

Ethernet Cable Pinouts

The following figures and tables provide the pinouts and signal descriptions for the Ethernet (AUI) cable and RJ-45 connector.

Ethernet (AUI) Cable Pinouts

Figure A-15 shows the Ethernet (AUI) cable assembly, and Table A-29 lists the pinouts.

Figure A-15: Ethernet (AUI) Cable Assembly

**Table A-29: Ethernet (AUI) Pinouts (Continued)**
Pin¹	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

¹ Any pin not referenced on a connector is not connected.

10BaseT Connector Pinouts

Figure A-16 shows the RJ-45 10BaseT connector, and Table A-30 lists the pinouts.

Figure A-16: RJ-45 10BaseT Connector

**Table A-30: RJ-45 10BaseT C onnector Pinouts (Continued)**
Pin¹	Description
1	TX+
2	TX-
3	RX+
4	-
5	-
6	RX-
7	-
8	-

¹ Any pin not shown is not connected.

100BaseT Connector Pinouts

The two interface receptacles on the Fast Ethernet network processor module are a single MII, 40-pin, D-shell type, and a single RJ-45. Each connection supports IEEE 802.3u interfaces that are compliant with the 100BaseX and 100BaseT standards. Only one can be used at a time.

The RJ-45 connection does not require an external transceiver. The MII connection requires an external physical sublayer (PHY) and an external transceiver. Figure A-17 shows the RJ-45 connectors.

Figure A-17: RJ-45 Connector and Plug

Table A-31 lists the pinouts and signals for the RJ-45 connectors. Refer to the RJ-45 pinout in Table 5 when selecting proper common-mode line terminations for the unused Category 5, UTP cable pairs 4/5 and 7/8. Wire pairs 4/5 and 7/8 are actively terminated in the RJ-45, 100BaseTX port circuitry in the 100E module. Common-mode termination reduces electromagnetic interference (EMI) and susceptibility to common-mode sources.

Table A-31: RJ-45 Connector Pinout

Pin	Description
1	Receive Data + (RxD+)
2	RxD-
3	Transmit Data + (TxD+)
6	TxD-

Depending on your RJ-45 interface cabling requirements, use the pinouts in Figure A-18 and Figure A-19.

Figure A-18: Straight-Through Cable Pinout (Connecting 100E RJ-45 Interface to a Hub or Repeater)

Figure A-19: Crossover Cable Pinout (RJ-45 Connections Between Hubs and Repeaters)

The module transceiver must be equipped with the appropriate connector, depending on the media type used for the MII connection. Connectors can be ST-type for optical fiber, RJ-45 for 100BaseT4, and so on. Figure A-20 shows the pin orientation of the female MII connector on the 100E module.

The MII receptacle uses 2-56 screw-type locks, called jackscrews (shown in Figure A-20), to secure the cable or transceiver to the MII port and provide strain relief. MII cables and transceivers have knurled thumbscrews (tightened with the fingers) that fasten to the jackscrews on the module's MII connector (shown in Figure A-20). In contrast, the RJ-45 modular plug has strain relief functionality incorporated into the design of its standard plastic connector.

Figure A-20: MII Connection (Female)

Table A-32 lists the MII connector pinouts and signals. MII cables are available commercially.

**Table A-32: MII Connector Pinouts and Signals (Continued)**
Pin¹	In	Out	In/Out	Description
14-17	-	Yes	-	Transmit Data (TxD)
12	Yes	-	-	Transmit Clock (Tx_CLK)²
11	-	Yes	-	Transmit Error (Tx_ER)
13	-	Yes	-	Transmit Enable (Tx_EN)
3	-	Yes	-	MII Data Clock (MDC)
4-7	Yes	-	-	Receive Data (RxD)
9	Yes	-	-	Receive Clock (Rx_CLK)
10	Yes	-	-	Receive Error (Rx_ER)
8	Yes	-	-	Receive Data Valid (Rx_DV)
18	Yes	-	-	Collision (COL)
19	Yes	-	-	Carrier Sense (CRS)
2	-	-	Yes	MII Data Input/Output (MDIO)
22-39	-	-	-	Common (ground)
1, 20, 21, 40	-	-	-	+5.0 volts (V)

¹ Any pins not indicated are not used.
² Tx_CLK and Rx_CLK are generated by the external transceiver.

See the NP-FE module configuration note for additional cabling information such as specifications for 100-Mbps 100BaseT transmission over UTP and STP cables and IEEE 802.3u 100BaseT physical characteristics.

Token Ring Port Pinouts

Table A-33 shows the original single-port Token Ring network processor module (Cisco product number NP-1R) port pinouts.

Table A-33: Token Ring Port Pinouts (DB-9 Connector)

9-Pin	Signal Name
1	RX-
2	NC¹
3	NC
4	NC
5	TX-
6	RX+
7	NC
8	NC
9	TX+

¹ NC = not connected.

Table A-34 shows the dual-port and newer single-port (Cisco product numbers NP-2R and NP-1RV2) Token Ring network processor module port pinouts:

**Table A-34: Dual-Port Token Ring Pinouts (DB-9 Connector)**
9-Pin	Signal Name
1	RX-
2	Ground
3	+5 Volt, fused
4	Ground
5	TX-
6	+RX
7	Ground
8	Ground
9	+TX

BRI Pinouts

The BRI interface port pinouts are shown in Table A-35.

Table A-35: BRI Port Pinouts (RJ-45)

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.

Channelized T1 Pinouts

For the CT1, two standard T1 serial cables are available from Cisco Systems: null-modem and straight-through. A straight-through cable connects your router to an external CSU. Null-modem cables are used for back-to-back operation and testing.

The cables have male 15-pin DB connectors at each end to connect the CT1with the external CSU.

The T1 interface cable has two 15-pin DB connectors at each end to connect the CT1with the external T1 CSU. Figure A-21 shows the T1 interface cable, connectors and pinouts.

The T1 interface cables have two, male, 15-pin DB connectors (one at each end) to connect the CT1 with the external CSU. Table A-36 lists the pinouts for the null-modem T1 cable and Table A-37 lists the pinouts for the straight-through T1 cable.

Figure A-21: T1 Interface Cable

**Table A-36: T1 Null-Modem 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 A-37: T1 Straight-Through 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

Channelized E1 Pi nouts

For the CE1 module, four serial cables are available from Cisco Systems. All three have DB-15 connectors on the CE1 end and either BNC, DB-15, twinax, or RJ-45 connectors on the network end. Figure A-22, Figure A-23, Figure A-24, and Figure A-25 show the E1 interface cables.

Figure A-22: E1 Interface Cable for 75-Ohm, Unbalanced Connections (with BNC Connectors)

Figure A-23: E1 Interface Cable for 120-Ohm, Balanced Connections (with DB-15 Connector)

Figure A-24: E1 Interface Cable for 120-Ohm, Balanced Connections (with Twinax Connectors)

Figure A-25: E1 Interface Cable for 120-Ohm, Balanced Connections (with RJ-45 Connector)

The E1 interface cables have two, male, 15-pin DB connectors (one at each end) to connect the CE1with the external CSU. Table A-39 lists the pinouts for the E1 interface cables available from Cisco Systems.

**Table A-38: E1 Interface Cable Pinouts**
CE1 End		Network End
DB-15¹		BNC	DB-15		Twinax		RJ-45²		RJ-45/NT³
Pin	Signal⁴	Signal	Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
9	TX Tip	TX Tip	1	TX Tip	TX-1	TX Tip	4	RX Tip	1	TX Tip
2	TX Ring	TX Shield	9	TX Ring	TX-2	TX Ring	5	RX Ring	2	TX Ring
10	TX Shield	-	2	TX Shield	Shield	TX Shield	6	RX Shield	3	TX Shield
8	RX Tip	RX Tip	3	RX Tip	RX-1	RX Tip	1	TX Tip	4	RX Tip
15	RX Ring	RX Shield	11	RX Ring	RX-2	RX Ring	2	TX Ring	5	RX Ring
7	RX Shield	-	4	RX Shield	Shield	RX Shield	3	TX Shield	6	RX Shield

¹ Any pins not described in this table are not connected.
² Connected as a network interface.
³ Connected as a network terminal.
⁴ TX = transmit; RX = receive.

**Table A-39: E1 Interface Cable Pinouts**
CE1 End		Network End
DB-15¹		BNC	DB-15		Twinax		RJ-45 ²		RJ-45/NT³
Pin	Signal⁴	Signal	Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
9	TX Tip	TX Tip	1	TX Tip	TX-1	TX Tip	4	RX Tip	1	TX Tip
2	TX Ring	TX Shield	9	TX Ring	TX-2	TX Ring	5	RX Ring	2	TX Ring
10	TX Shield	-	2	TX Shield	Shield	TX Shield	6	RX Shield	3	TX Shield
8	RX Tip	RX Tip	3	RX Tip	RX-1	RX Tip	1	TX Tip	4	RX Tip
15	RX Ring	RX Shield	11	RX Ring	RX-2	RX Ring	2	TX Ring	5	RX Ring
7	RX Shield	-	4	RX Shield	Shield	RX Shield	3	TX Shield	6	RX Shield

¹ Any pins not described in this table are not connected.
² Connected as a network interface.
³ Connected as a network terminal.
⁴ TX = transmit; RX = receive.

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