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Cisco 1400 Series Routers

Product Installation Guide

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Table of Contents

This appendix describes cables and cabling guidelines that should be used with the Cisco 1400 series router and contains the following sections:

ATM-25 Cable

The green RJ-45-to-RJ-45 ATM-25 cable connects the Cisco 1401 router through a DSL modem to the ADSL line. This cable must be a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The cable that came with your router is Category 5 and is shown in Figure C-1. The signal associated with each pin is described in Table C-1.


Figure C-1: ATM-25 Cable



Table C-1: ATM-25 Cable Pinouts
Pin Signal

1

RD+

2

RD-

3

Not used

4

Not used

5

Not used

6

Not used

7

TD+

8

TD-


Note If you want to connect the ATM-25 port to the ATM port on another router, you must supply an RJ-45-to-RJ-45 crossover cable.

ADSL Cable

The purple RJ-11-to-RJ-11 ADSL cable connects the Cisco 1407 and Cisco 1417 routers to the ADSL line. This cable must be a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The cable that came with your router is Category 5 and is shown in Figure C-2. Cable pinouts are described in Table C-2. Pins 2 and 5 are used for data.


Figure C-2: ADSL Cable



Table C-2: ADSL Cable Pinouts
Pin1 Pin

22

<—>

2

3

<—>

3

4

<—>

4

5

<—>

5

1Pins 1 and 6 are not used.
2Pins 2 and 5 are used for data.

POTS Crossover Cable

The purple (with a blue stripe) RJ-11-to-RJ-11 POTS crossover cable connects the Cisco 1407 and Cisco 1417 routers to POTS splitters that use pins 3 and 4 for data. (The Cisco 1417 router uses pins 2 and 5 for data.) This cable can be ordered from Cisco. If you provide your own cable, it must be a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable. The orderable Cisco cable is Category 5 and is shown in Figure C-3. Cable pinouts are described in Table C-3.


Figure C-3: POTS Crossover Cable



Table C-3: POTS Crossover Cable Pinouts
Pin1 Pin

2

<—>

3

3

<—>

2

4

<—>

5

5

<—>

4

1Pins 1 and 6 are not used.

ATM Loopback Plug

An ATM loopback plug is used when performing a loopback test on the Cisco 1401 router. The loopback plug is shown in Figure C-4 and plug pinouts are described in Table C-4.


Figure C-4: ATM Loopback Plug



Table C-4: ATM Loopback Plug Pinouts
Pin1 Signal Pin Signal

1

RD +

< — >

7

TD +

2

RD -

< — >

8

TD -

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

Ethernet Cable

This section describes the yellow RJ-45-to-RJ-45 Ethernet cable used to connect the router to your local Ethernet network. This cable is shipped with the router. The signal associated with each pin is described in Table C-5.


Table C-5: Straight-Through Ethernet Cable
RJ-45
Pin1
Signal Direction RJ-45
Pin

1

TX+

—>

1

2

TX-

—>

2

3

RX+

<—

3

6

RX-

<—

6

1Pins 4, 5, 7, and 8 are not used.
Pinouts

Console Cable

and Adapters

A console cable kit is provided with your router. Use this kit when connecting your router to a PC or terminal.

The console cable kit contains these items:

  • RJ-45-to-RJ-45 console cable (blue)

  • RJ-45-to-DB-25 adapter (gray)

  • RJ-45-to-DB-9 adapter (gray)

Table C-6 describes the wiring for the console port, the console cable, and both adapters. Figure C-5 illustrates how to identify the console cable, which is also referred to as a rollover cable.


Table C-6:
CONSOLE Port (DTE) RJ-45-to-RJ-45 Console Cable Adapter Adapter
Signal RJ-45 Pin RJ-45 Pin DB-9 Pin DB-25 Pin Signal

-

1

8

7

4

-

DTR

2

7

4

20

DSR

TxD

3

6

3

2

RxD

GND

4

5

5

7

GND

GND

5

4

5

7

GND

RxD

6

3

2

3

TxD

DSR

7

2

6

6

DTR

-

8

1

8

5

-

Console Cable and Adapter Pinouts
Figure C-5:
Identifying a Rollover Cable


Ethernet Network Cabling Guidelines

Table C-7 describes guidelines to follow when creating Ethernet networks. Exact figures might vary depending on the manufacturer of the network equipment.


Table C-7: Ethernet Cabling Guidelines
Specification 10BaseT

Maximum segment length

100 meters

Maximum number of segments per network

5

Maximum hop count1

4

Maximum number of nodes per segment

1024

Cable type supported

UTP
Category 3, 4, or 5

1Hop count = Routing metric used to measure the distance between a source and a destination.