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Cable Specifications

Cable Specifications

This appendix describes the ports and connectors that are used to configure the Cisco Optical Regenerator to other network components. It covers the following information:

For configuration examples using cables with Cisco Optical Regenerator ports and connectors, see "Connecting to Your Network" in the "Installing the Cisco Optical Regenerator" chapter. See Figure B-1 to review the locations of the Ethernet and console ports and fiber optic connectors.


Figure B-1: Cisco Optical Regenerator Front Panel


Cable Accessory Kit

The Cisco Optical Regenerator comes with a cable accessory kit that contains the cables and adapters you need to connect a terminal, a PC running communication software, or a modem to your regenerator. The cable accessory kit includes the following items:


Note Single-mode long-reach simplex cables with SC connectors are available from the following cable vendors: AMP, Anixter, AT&T, Red-Hawk, and Siemens. These cables are not available from Cisco Systems.

Console Port Signals and Pinouts

Use the RJ-45 to RJ-45 rollover cable and RJ-45 to DB-9 female DTE adapter (labeled Terminal) to connect the console port to a PC running terminal emulation software. Table B-1 lists the pinouts for the console port cable and adapter. See Figure B-2.


Figure B-2: Console Port and Console Port Connector (RJ-45)


Identifying a Rollover Cable

You can identify a rollover cable by comparing the two modular ends of the cable. Hold the cables side-by-side, with the tab at the back, the wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug. (See Figure B-3). If your cable came from Cisco Systems, pin 1 will be white on one connector, but pin 8 will be white on the other (a roll-over cable reverses pins 1 and 8, 2 and 7, 3 and 6, plus 4 and 5).


Figure B-3: Identifying a Rollover Cable


Table B-1 shows the pin-outs for the DB-9 Adapter. Use the RJ-45-to-RJ-45 roll-over cable and RJ-45-to-DB-25 female DTE adapter (labeled Terminal) to connect the console port to a terminal.


Table B-1: Console Port Signaling and Cabling Using a DB-9 Adapter
Console Port (DTE) RJ-45 to RJ-45 Roll-Over Cable RJ-45 to DB-9 Terminal Adapter Console Device
Signal RJ-45 Pin RJ-45 Pin DB-9 Pin Signal

RTS

11

8

8

CTS

DTR

2

7

6

DSR

TxD

3

6

2

RxD

GND

4

5

5

GND

GND

5

4

5

GND

RxD

6

3

3

TxD

DSR

7

3

4

DTR

CTS

81

1

7

RTS

1Pin 1 is connected internally to pin 8.

Table B-2 lists the pinouts for the asynchronous serial console port, the RJ-45 to RJ-45 roll-over cable, and the RJ-45 to DB-25 female DTE adapter (labeled Terminal).


Table B-2: Console Port Signaling and Cabling Using a DB-25 Adapter
Console Port (DTE)1 RJ-45-to-RJ-45 Roll-Over Cable RJ-45-to-DB-25 Terminal Adapter Console Device
Signal RJ-45 Pin RJ-45 Pin DB-25 Pin Signal

RTS

12

8

5

CTS

DTR

2

7

6

DSR

TxD

3

6

3

RxD

GND

4

5

7

GND

GND

5

4

7

GND

RxD

6

3

2

TxD

DSR

7

3

20

DTR

CTS

81

1

4

RTS

1You can use the same cabling to connect a console to the auxiliary port.
2Pin 1 is connected internally to pin 8.

Ethernet Port Signals

The Ethernet port is used to download Cisco IOS software images to the Cisco Optical Regenerator. However, the Ethernet port must be configured through a PC terminal before you can download files. You can use a straight Ethernet cable to connect and configure the regenerator to other components through the Ethernet port.

Fiber Connectors

The Cisco Optical Regenerator has two pair of fiber connectors for bidirectional transmission. The left fiber connector interfaces with an OC-48 regeneration port that transmits data. The right fiber connector interfaces with an OC-48 regeneration port that receives data. The SC connector supports single-mode fiber-optic transmissions. The SC connector is the default connector for the regenerator as specified by the Telecommunications Industry Association (TIA) as the Fiber-Optic Cable Intermatability Standard (FOCIS-3). See Figure B-4.


Figure B-4: OC-48 regeneration ports with fiber connectors



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Posted: Tue May 9 19:00:34 PDT 2000
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