Cables and Transceivers

Et hernet Transceivers

Table 13-1 lists Ethernet transceivers and applicable systems.

**Table 13-1: Ethernet Transceivers**
Description	Systems	Product Number
Thin Ethernet BNC transceiver with 9.8-ft (3-m) attachment unit interface (AUI) cable	ASM-CS Ci sco 70 00 family Ci sco 4 000 se ries Ci sco 3000 series Ci sco 2500 series Ac cess server series	COM-13B=
Thick Ethernet, N-series transceiver with 9.8-ft (3-m) AUI cable	ASM-CS Cisco 7000 family Cisco 4000 series Cisco 3000 series Cisco 2500 series Access server series	COM-13N=
Thick Ethernet piercing-tap transceiver with 9.8-ft (3-m) cable	ASM-CS Cisco 7000 family Cisco 4000 series Cisco 3000 series Cisco 2500 series Access server series	COM-13V=
Shielded transceiver with 49-ft (15-m) cable	ASM-CS Cisco 7000 family Cisco 4000 series Cisco 3000 series Cisco 2500 series Access server series	COM-14A=
Unshielded transceiver with a 16.4-ft (5-m) cable	ASM-CS Cisco 7000 family Cisco 4000 series Cisco 3000 series Cisco 2500 series Access server series	COM-14B=
Two 50-ohm thick Ethernet cable terminators	ASM-CS Cisco 7000 family Cisco 4000 series Cisco 3000 series Cisco 2500 series Access server series	COM-14TA=
Two 50-ohm thin Ethernet cable terminators	ASM-CS Cisco 7000 family Cisco 4000 series Cisco 3000 series Cisco 2500 series Access server series	COM-14TB=

Ci sco-Approved Cable Vendors

Following is a list of Cisco-approved cable vendors:

LoDan West, Inc.
1050 Commercial Street
San Carlos, CA 94070
Tel: 415 592-4600
Fax: 415 592-4054

Volex, Inc.
646 Caribbean Drive
Sunnyvale, CA 94089
Tel: 408-541-4600
Fax: 408-541-4640

Storm Products Co.
1400 Memorex Drive
Santa Clara, CA 95050
Tel: 408 565-9800
Fax: 408 565-9820

The JPM Company
Route 15 North
Lewisburg, PA 17837
Tel:      717-524-8200
Fax:     717-524-8181
or their Pacific Coast representative
Camino Sales
Tel:      415-968-4099
Fax:     415-968-2645

Note Only nonstandard Cisco cables or generic-use cables are available from the Cisco-approved vendors listed above. All cables with a Cisco product number listed in this catalog should be purchased directly from Cisco.

T1/D SUs

Table 13-2 lists T1/DSUs and applicable systems.

**Table 13-2: T1/DSUs**
Description	System	Product Number
T1 Switched Multimegabit Data Service (SMDS) DSU, 110 VAC Vendor: Kentrox	ASM-CS Ci sco 70 00 family Ci sco 40 00 se ries Ci sco 3000 series Ci sco 2500 series Ac cess server series	COM-SNI1=
T1/DSU Vendor: Digital Link	ASM-CS Cisco 7000 family Cisco 4000 series Cisco 3000 series Cisco 2500 series Access server series	COM-T1=

Table 13-3 lists DSU/channel service unit (CSU) cables and their product numbers.

**Table 13-3: DS U/CSU Cables**
Description	Cable	DSU/CSU
EIA/TIA-449 female to EIA-530 male cable, 3 ft (1 m)	CAB-SDS1=	COM-SNI1= COM-T1=
DA-15 female to pigtail cable, 24.6 ft (7.5 m)	CAB-SDS6=	COM-SNI1= COM-T1=
DA-15 female to RJ-48 male cable, 24.6 ft (7.5 m)	CAB-SDS0=	COM-SNI1= COM-T1=

Se rial Cables

One of the most complicated parts of setting up a network system (router, switch, hub, or access server) is the selection of the serial cables to connect the network system to the serial devices in your network. There are many different serial cables with seemingly similar features, and finding the correct cable can be a challenge. The information that follows will quickly and easily guide you through the process of selecting the right serial cables for your network.

Selecting the proper serial cable is as easy as knowing the answers to three questions:

Is the network system being connected to a DTE or DCE device?
What signaling standard does the device require?
Is a male or female connector required on the cable?

With the answers to these questions, and the model of your network system, you can read the part number of the cable required from Table 13-5.

DT E or D CE

Devices that communicate over a serial interface are divided into two modes: DTE and DCE. The most important difference between these types of devices is that the DCE device supplies the clock signal that paces the communications on the bus. The documentation that came with the device should indicate whether it is DTE or DCE (some devices have a jumper to select either mode). If you cannot find the information in the documentation, use Table 13-4 to help you select the proper class.

**Table 13-4: DTE or DCE Determination**
	DTE	DCE	Selectable DTE or DCE¹
Device	Terminals	Modems CSU/DSU Multiplexers	Routers Hubs Switches Access servers
Gender	Male	Female	Either

¹ Selectable devices usually have a jumper, switch, or software command used to select DTE or DCE.

Note The cable itself identifies the Cisco router as a DTE or DCE device to other devices in the network; for this reason, it is important to select the correct product number from Table 13-5.

Ca ble Gender

If pins protrude from the base of the connector, the plug is male. If the connector has holes to accept the pins, the receptacle is female. Refer to Figure 13-1 to identify the connector you need.

Signaling Standards

A number of different standards define the signaling over a serial cable (including EIA/TIA-232, X.21, V.35, EIA/TIA-449, EIA-530, and EIA-613 HSSI). Each standard defines the signals on the cable and specifies the connector at the end of the cable. The documentation for the device being connected should indicate the signaling standard used for that device. If you cannot find the information in the documentation, use the illustrations inside to select the signaling standard required. Select the connector in Figure 13-1 that will mate with the connector on your device, not the illustration that looks like the connector on the device.

Figure 13-1: Serial Cable Connectors--Network Ends

**Table 13-5: Se rial Cable Part Numbers**
Mode	Cable Gender	Signaling	Cisco 70 00 Family	Cisco 4 0 00 (NP-4T, NP-4GB, NP-4GU, NP-1HSSI, NP-2T16S) Cisco 3600 Series	Cisco 4000 (NP-2T)	Cisco 2500 Series Ac cessPro PC Cards Access Server Series Cisco 1600 Series	Cisco 3800 Series ¹	Cisco 1001 General Serial Cables
DTE	Male	EIA/TIA-232	CAB-232MT= CAB-OCT-232-MT=	CAB-232MT=² CAB-OCT-232-MT=³	CAB-NP232T=	CAB-232MT=	CAB-D25M-232MT=	CAB-R23=
		EIA/TIA-449	CAB-449MT=	CAB-449MT=2	CAB-NP449T=	CAB-449MT=	CAB-D25M-449MT=	CAB-R44=
		V.35	CAB-V35MT= CAB-OCT-V35-MT=	CAB-V35MT=2 CAB-OCT-V35-MT=3	CAB-NPV35TV2=	CAB-V35MT=	CAB-D25M-V35MT=	CAB-V35MTS=⁴
		X.21	CAB-X21MT= CAB-OCT-X21-MT=	CAB-X21MT=2	CAB-NPX21T=	CAB-X21MT=	CAB-D25M-X21MT=	-
		EIA-530	CAB-530MT=	CAB-530MT=2	CAB-NP530=	CAB-530MT=	-	-
		HSSI	CAB-HSI1=⁵	CAB-HSI1⁶	-	-	-	-
		ASYNC	-	-	-	CAB-OCTAL-ASYNC=⁷	-	-
		T1	CAB-7KCT1DB15=5	CAB-7KCT1DB15=2	-	-	-	-
		E1	CAB-E1-BNC=5	CAB-E1-BNC=2 CAB-E1-BNC-3M=⁸	-	CAB-E1-BNC=7	-	-
			CAB-E1-DB15=5	CAB-E1-DB15=2	-	CAB-E1-DB15=7	-	-
			CAB-E1-PRI=5 CAB-E1-PRI/NT=5	CAB-E1-PRI=2 CAB-E1-PRI/NT=⁹	-	CAB-E1-PRI=7 CAB-E1-PRI/NT=7	-	-
			CAB-E1-TWINAX=5	CAB-E1-TWINAX=2 CAB-E1-TWINAX-3M=8	-	CAB-E1-TWINAX=7	-	-
		-	CAB-PCA-VA=5	-	-	-	-	-
			CAB-PCA-VB=5	-	-	-	-	-
			CAB-PCA-Y=5	-	-	-	-	-
	Female	V.35	-	CAB-V35FT=3	-	-	-	-
DCE	Male	V.35	-	CAB-V35MC=9	-	-	-	-
		HSSI	CAB-HNUL=5	CAB-HNUL=6	-	-	-	-
		T1	CAB-7KCT1NULL=5	CAB-7KCT1NULL=2	-	-	-	-
	Female	EIA/TIA-232	CAB-232FC= CAB-OCT-232-FC=	CAB-232FC=2 CAB-OCT-232-FC=3	CAB-NP232C=	CAB-232FC=	CAB-D2M5-232FC=	CAB-R23=
		EIA/TIA-449	CAB-449FC=	CAB-449FC=2	CAB-NP449C=	CAB-449FC=	CAB-D25M-449FC=	CAB-R44=
		V.35	CAB-V35FC= CAB-OCT-V35-FC=	CAB-V35FC=2 CAB-OCT-V35-FC=3	CAB-NPV35CV2=	CAB-V35FC=	CAB-D25M-V35FC=	-
		X.21	CAB-X21FC= CAB-OCT-X21-FC=	CAB-X21FC=2	CAB-NPX21C=	CAB-X21FC=	CAB-D25M-X21FC=	-
		EIA-530	-	-	-	-	CAB-D25M-530FC=

Ordering

To order serial cables and other Cisco products, contact Cisco as described in the "Ordering Products" chapter.

Specifications

This section describes serial cables by product and part number. The illustrations in this section show the Cisco end and the network end of each serial cable. The connector on the left is the Cisco end of the cable. The connector on the right is the network end of the cable.

CAB-232FC=

The following illustration shows serial cable CAB-232FC= (part number 72-0794-01), which is used in the following systems: the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series, Cisco 2500 series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a female DB-25 connector on the network end.

CAB-232MT=

The following illustration shows serial cable CAB-232MT= (part number 72-0793-01), which is used in the following systems: the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series, Cisco 2500 series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a male DB-25 connector on the network end.

CAB-25AS-MMOD=

The following illustration shows adapter CAB-25AS-MMOD= (part number CAB-25AS-MMOD), which is used in the following systems: the Cisco 2500 series, including the access server series (Cisco 2509 through Cisco 2512). This adapter has an RJ-45 connector on one side and a male DB-25 connector on the other side.

CAB-25AS-FDTE=

The following illustration shows adapter CAB-25AS-FDTE= (part number CAB-25AS-FDTE), which is used in the Cisco 2500 series, including the access server series (Cisco 2509 through Cisco 2512). This adapter has an RJ-45 connector on one side and a female DB-25 connector on the other side.

CAB-449FC=

The following illustration shows serial cable CAB-449FC= (part number 72-0796-01), which is used in the following systems: the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series, Cisco 2500 series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a female DB-37 connector on the network end.

CAB-449MT=

The following illustration shows serial cable CAB-449MT= (part number 72-0795-01), which is used in the following systems: the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series, Cisco 2500 series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a male DB-37 connector on the network end.

CAB-500RJ=

The following illustration shows serial cable CAB-500RJ= (part number 31-0590-01), which is used in the following systems: the Cisco 2500 series and the Cisco CS500. This cable has an RJ-45 connector on both ends.

CAB-530MT=

The following illustration shows serial cable CAB-530MT= (part number 72-0797-01), which is used in the following systems: the Cisco 7000 fa mily, Cisco 4000 series, Cisco 3600 series, Cisco 2500 series, Cisco 1600 series, Cisco access servers, and Ac cessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a male DB-25 connector on the network end.

CAB-7KCT1DB15=

The following illustration shows serial cable CAB-7KCT1DB15= (part number 72-0799-00), which is used in the following systems: the Cisco 7500 series, Cisco 7000 series, Cisco 4000 series, and Cisco 3600 series. This cable has a male DB-15 connector on the Cisco end and a male DB-15 connector on the network end.

CAB-7KCT1NULL=

The following illustration shows serial cable CAB-7KCT1NULL= (part number 72-0800-00), which is used in the following systems: the Cisco 7500 series, Cisco 7000 series, Cisco 4000 series, and Cisco 3600 series systems. This cable has a male DB-15 connector on the Cisco end and a male DB-15 connector on the network end.

CAB-E1-BNC= and CAB-E1-BNC-3M=

The following illustration shows serial cable CAB-E1-BNC= (part number CAB-E1-BNC=), which used in the Cisco 7500 series, 7000 series, Cisco 4000 series, Cisco 3600 series, and Cisco access server systems. This cable is 5 meters in length, and has a male DB-15 connector on the Cisco end and two BNC connectors on the network end.

The CAB-E1-BNC-3M= (part number CAB-E1-BNC-3M=) is identical to the CAB-E1-BNC=, except that the CAB-E1-BNC-3M= is 3 meters in length. This cable is used in Cisco 4000 series systems.

CAB-E1-DB15=

The following illustration shows serial cable CAB-E1-DB15= (part number CAB-E1-DB15), which is used in the Cisco 7500 series, 7000 series, Cisco 4000 series, Cisco 3600 series, and Cisco access server systems. This cable has a male DB-15 connector on the Cisco end and a DB-15 connector on the network end.

CAB-E1-PRI= and CAB-E1-PRI/NT=

The following illustration shows serial cable CAB-E1-PRI= (part number CAB-E1-PRI=), which is used in the Cisco 7500 series, 7000 series, Cisco 4000 series, Cisco 3600 series, and Cisco access server systems. This cable has a male DB-15 connector on the Cisco end and an RJ-45 connector on the network end.

The CAB-E1-PRI/NT= (part number CAB-E1-PRI/NT=) is identical to the CAB-E1-PRI=, except that the RJ-45 connector is connected as a network terminal (NT1) instead of as a network interface. This cable is used in the Cisco 7500 series, 7000 series, Cisco 4000 series, and Cisco access server systems.

CAB-E1-TWINAX= and CAB-E1-TWINAX-3M=

The following illustration shows serial cable CAB-E1-TWINAX= (part number CAB-E1-TWINAX=), which is used in the Cisco 7500 series, Cisco 7000 series, Cisco 3600 series systems, and Ac cessPro PC cards. This cable has a male DB-15 connector on the Cisco end and two BNC connectors on the network end.

The CAB-E1-TWINAX-3M= (part number CAB-E1-TWINAX-3M=) is identical to the CAB-E1-TWINAX=. This cable is used in the Cisco 4000 series systems.

CAB-HNUL=

The following illustration shows serial cable CAB-HNUL= (part number 72-0727-01), which is used in the Cisco 7500 series, Cisco 7000 series, and Cisco 4000 series (NP-1HSSI) systems. This cable has a male DB-50 (SCSI) connector on the Cisco end and a male DB-50 (SCSI) connector on the network end.

CAB-HSI1=

The following illustration shows serial cable CAB-HSI1= (part number 72-0710-01), which is used in the Cisco 7500 series, Ci sco 7000 series, and Cisco 4000 series (NP-1HSSI). This cable has a male DB-50 (SCSI) connector on the Cisco end and a male DB-50 (SCSI) connector on the network end.

CAB-NP232C=

The following illustration shows serial cable CAB-NP232C= (part number 72-0736-01), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a female DB-25 connector on the network end.

CAB-NP232T=

The following illustration shows serial cable CAB-NP232T= (part number 72-0670-01), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a male DB-25 connector on the network end.

CAB-NP449C=

The following illustration shows serial cable CAB-NP449C= (part number 72-0738-01), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a female DB-37 connector on the network end.

CAB-NP449T=

The following illustration shows serial cable CAB-NP449T= (part number 72-0672-01), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a male DB-37 connector on the network end.

CAB-NP530=

The following illustration shows serial cable CAB-NP530= (part number 72-0732-01), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a male DB-25 connector on the network end.

CAB-NPV35CV2=

The following illustration shows serial cable CAB-NPV35CV2= (part number 72-0740-02), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a female Winchester connector on the network end.

CAB-NPV35TV2=

The following illustration shows serial cable CAB-NPV35TV2= (part number 72-0671-02), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a male Winchester connector on the network end.

CAB-NPX21C=

The following illustration shows serial cable CAB-NPX21C= (part number 72-0737-01), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a female DB-15 connector on the network end.

CAB-NPX21T=

The following illustration shows serial cable CAB-NPX21T= (part number 72-0683-02), which is used in the Cisco 4000 series (2T) systems. This cable has a male DB-50 connector on the Cisco end and a male DB-15 connector on the network end.

CAB-OCT-232-MT= and CAB-OCT-232-FC=

The following illustration shows serial cable CAB-OCT-232-MT= (part number CAB-OCT-232-MT=), which is used with the PA-8T-232 port adapter for the Cisco 7 000 family, and in Cisco 4000 series systems with the NP-2T16S-RS232 network processor module. This cable has a female 200-pin, Molex connector on the Cisco end and eight 25-pin Winchester block-type EIA/TIA-232 male connectors on the network end. (See Figure 13-1 for the EIA/TIA-232 connector detail.)

The CAB-OCT-232-FC= (part number CAB-OCT-232-FC=) is identical to the CAB-OCT-232-MT=, except that the CAB-OCT-232-FC= has eight 25-pin Winchester block-type EIA/TIA-232 female connectors on the network end. This cable is also used with the PA-8T-232 port adapter for the Cisco 7000 family, and in Cisco 4000 series systems with the NP-2T16S-RS232 network processor module.

CAB-OCT-V35-MT= and CAB-OCT-V35-FC=

The following illustration shows serial cable CAB-OCT-V35-MT= (part number CAB-OCT-V35-MT), which is used with the PA-8T-V35 port adapter for the Cisco 7000 family, and in Cisco 4000 series systems with the NP-2T16S-V.35 network processor module. This cables has a female 200-pin, Molex connector on the Cisco end and eight 34-pin Winchester block-type V.35 male connectors on the network end. (See Figure 13-1 for the V.35 connector detail.)

The CAB-OCT-V35-FC= (part number CAB-OCT-V35-FC=) is identical to the CAB-OCT-V35-MT=, except that the CAB-OCT-V35-FC= has eight 34-pin Winchester block-type V.35 female connectors on the network end. This cable is also used with the PA-8T-V35 port adapter for the Cisco 7000 family, and in Cisco 4000 series systems with the NP-2T16S-V.35 network processor module.

CAB-OCT-X21-MT= and CAB-OCT-X21-FC=

The following illustration shows serial cable CAB-OCT-X21-MT= (part number CAB-OCT-X21-MT=), which is used with the PA-8T-X21 port adapter for the Cisco 7000 family, and in Cisco 4000 series systems with the NP-2T16S-X21 network processor module. This cable has a female 200-pin, Molex connector on the Cisco end and eight 15-pin Winchester block-type X.21 male connectors on the network end. (See Figure 13-1 for the X.21 connector detail.)

The CAB-OCT-X21-FC= (part number CAB-OCT-X21-FC=) is identical to the CAB-OCT-X21-MT=, except that the CAB-OCT-X21-FC= has eight 15-pin Winchester block-type X.21 female connectors on the network end. This cable is also used with the PA-8T-X21 port adapter for the Cis co 7000 family, and in C isc o 4 000 series systems with the NP-2T16S-X21 network processor module.

CAB-PCA-Y=

The following illustration shows serial cable CAB-PCA-Y= (part number CAB-PCA-Y), which is used in the Cisco 7500 series and 7000 series systems. The CAB-PCA-Y= is a spare Y cable with female and male DB-78 connectors; this cable ships with the Cisco 7000 series and Cisco 7500 series CIP2.

CAB-R23=

The following illustration shows serial cable CAB-R23= (part number 74-0173), which is a general serial cable for all router platforms. This cable has a female DB-25 connector on one end and a male DB-25 connector on the other end. Either end of the CAB-R23 cable can be the Cisco end or the network end, depending on whether the Cisco router is designated as a DCE device or a DTE device. If the router is designated as a DCE device, the female DB-25 connector is the Cisco end. If the router is designated as a DTE device, the male DB-25 connector is the Cisco end.

CAB-R44=

The following illustration shows serial cable CAB-R44= (part number 74-0187), which is a general serial cable for all router platforms. This cable has a female DB-37 connector on one end and a male DB-37 connector on the other end. Either end of the CAB-R44= cable can be the Cisco end or the network end, depending on whether the Cisco router is designated as a DCE device or a DTE device. If the router is designated as a DCE device, the female DB-37 connector is the Cisco end. If the router is designated as a DTE device, the male DB-37 connector is the Cisco end.

CAB-V35FC=

The following illustration shows serial cable CAB-V35FC= (part number 72-0792-01), which is used in the following systems: the Cisco 7000 family, Cisc o 40 00 series, Ci sco 3600 series, Ci sco 2500 series, C isco 1600 series, Cis co access servers, and A ccessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a female Winchester connector on the network end.

CAB-V35FT=

The following illustration shows serial cable CAB-V35FT= (part number 72-0801-01), which is used in the Cisco 4000 series systems. This cable has a male DB-60 connector on the Cisco end and a female Winchester connector on the network end.

CAB-V35MC=

The following illustration shows serial cable CAB-V35MC= (part number 72-0802-01), which is used in the Cisco 4000 series systems. This cable has a male DB-60 connector on the Cisco end and a male Winchester connector on the network end.

CAB-V35MT=

The following illustration shows serial cable CAB-V35MT= (part number 72-0791-01), which is used in the following systems: the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series, Cisco 2500 series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a male Winchester connector on the network end.

CAB-V35MTS=

The following illustration shows serial cable CAB-V35MTS= (part number 72-0816-01), which is a generic V.35 DTE translation cable and is used in the Cisco 1001. This cable has a male shielded Winchester connector on both ends.

CAB-X21FC=

The following illustration shows serial cable CAB-X21FC= (part number 72-0790-01), which is used in the following systems: the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series, Cisco 2500 series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a female DB-15 connector on the network end.

CAB-X21MT=

The following illustration shows serial cable CAB-X21MT= (part number 72-0789-01), which is used in the following systems: the Cisco 7 000 family, Ci sc o 40 00 series, C isco 3600 series, Cisco 2500 series, Ci sco 1600 series, Ci sco access servers, and Ac cessPro PC cards. This cable has a male DB-60 connector on the Cisco end and a male DB-15 connector on the network end.

RJ-45 Ca bles

Cisco products use the following three types of RJ-45 cables:

Straight-through
Crossover
Rolled

Cisco does not provide these cables; they are widely available from other sources. Figure 13-2 shows an RJ-45 cable.

Figure 13-2: RJ-45 Cable

To identify the RJ-45 cable type, hold the two ends of the cable next to each other so you can see the colored wires inside the ends, as shown in Figure 13-3.

Figure 13-3: RJ-45 Cable Identification

Examine the sequence of colored wires to determine the type of RJ-45 cable, as follows:

Straight-through--The colored wires are in the same sequence at both ends of the cable.
Crossover--The first (far left) colored wire at one end of the cable is the third colored wire at the other end of the cable.
Rolled--The colored wires at one end of the cable are in the reverse sequence of the colored wires at the other end of the cable.

Table 13-6, Table 13-7, and Table 13-8 list pinout information for RJ-45 cables.

**Table 13-6: RJ-45 St raight-Through (Ethernet) Cable Pinouts**
Signal	Pin	Pin	Signal
Tx+	1	1	Tx+
Tx-	2	2	Tx-
Rx+	3	3	Rx+
-	4	4	-
-	5	5	-
Rx-	6	6	Rx-
-	7	7	-
-	8	8	-

**Table 13-7: RJ-45 Cr os sover (Ethernet) Cable Pinouts**
Signal	Pin	Pin	Signal
Tx+	1	3	Rx+
Tx-	2	6	Rx-
Rx+	3	1	Tx+
-	4	4	-
-	5	5	-
Rx-	6	2	Tx-
-	7	7	-
-	8	8	-

**Table 13-8: RJ-45 Ro lled (Console) Cable Pinouts**
Signal	Pin	Pin	Signal
-	1	8	-
-	2	7	-
-	3	6	-
-	4	5	-
-	5	4	-
-	6	3	-
-	7	2	-
-	8	1	-

AT M Cable Specifications

Cisco ATM devices support the cable types listed in Table 13-9 and the cable connectors listed in Table 13-10. The ATM cables listed in Table 13-9 are industry standard unless otherwise specified.

Table 13-10 lists the following connector types:

ST--Round, bayonet, or twistlock coupling connector.
SC--Push/pull coupling connector similar to ST connector except for a more square form.
FSD (also called MIC)--Fixed shroud duplex system is specified for FDDI interface. Because TAXI is 100 Mbps derived from the physical media FDDI, it was kept the same for ATM TAXI mode.
BNC--Standard connector used to connect IEEE 802.3 10Base2 coaxial cable to a transceiver.
RJ-45--Standard 8-wire connector for IEEE 802.3 StarLAN networks. Used also as a telephone line in some cases.

Figure 13-4 shows the ATM connectors types.

Figure 13-4: ATM Connector Types

**Table 13-9: AT M Cable Types**
Media Type	ATM Forum Specification	Cisco 70 00 Series ¹	Cisco 40 00 Series ²	LightStream 100 LightStream 1010	Catalyst 5000 Family ³	ATM SBus Adapter
SONET MM	62.5/125 µm⁴	62.5/125 µm	62.5/125 µm	62.5/125 µm	62.5/125 µm	62.5/125 µm
SONET SM	8.5/125 µm	8.5/125 µm	8.5/125 µm	8.5/125 µm	-	-
SONET TP	150-ohm STP⁵	-	-	100-ohm UTP⁶	100-ohm UTP	SJ-45
TAXI	62.5/125 µm	62.5/125 µm	-	62.5/125 µm⁷	-	-
DS3/E3	75-ohm coaxial	75-ohm coaxial	75-ohm coaxial	75-ohm coaxial	-	-

¹ With AIP (ATM Interface Processor).
² Models 4700, 4500, and 4500-M with an ATM interface processor module installed.
³ With ATM LAN Emulation module.
⁴ µm = micrometer = micron.
⁵ Types 1 and 2 as specified by IEEE 802.5 specification.
⁶ ATM physical interface specification for 155 Mbps over twisted-pair cable, version 1.0.
⁷ Not applicable for the LightStream 1010.

**Table 13-10: AT M Cable Connectors**
Media Type	ATM Forum Specification	Cisco 70 00 Series ¹	Cisco 40 00 Series ²	LightStream 100 LightStream 1010	Catalyst 5000 Family ³	ATM SBus Adapter
SONET MM	FC or SC⁴	SC	SC	SC	SC	SC
SONET SM	FC or SC4	ST	SC	SC	-	-
SONET TP	DB9⁵	-	-	RJ-45	RJ-45	RJ-45
TAXI	FSD	FSD	-	FSD⁶	-	-
DS3/E3	RG59-BNC	RG59-BNC⁷	RG59-BNC	RG59-BNC	-	-

¹ With AIP (ATM Interface Processor).
² Models 4700, 4500, and 4500-M with an ATM interface processor module installed.
³ With ATM LAN Emulation module.
⁴ SC is a push/pull coupling connector similar to ST connector except for a more square form.
⁵ Shielded 9-pin D connector.
⁶ Does not apply to the LightStream 1010.
⁷ The AIP DS3 and E3 interfaces require a special cable (CAB-ATM-DS3/E3) that ensures compliance with EMI standards.

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Cables and Transceivers