Asymmetric Digital Subscriber Line (ADSL)

Document ID: 15108

Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Cisco 605
      ADSL Port Pinouts
      Rear Panel LEDs
Cisco 626
      ADSL Port Pinouts
      WAN LNK LED
      Why the WAN LNK LED Turns Off
Cisco 627
      ADSL Port Pinouts
      WAN LNK LED
      Why the WAN LNK LED Turns Off
Cisco 633
      xDSL Port Pinouts
      LED Descriptions
Cisco 673
      SDSL Port Pinouts
Cisco 675 and 675e
      ADSL Port Pinouts
      LED Descriptions for the Cisco 675 and 675e
Cisco 676
      ADSL Port Pinouts
      WAN Link and Powerup Issues
Cisco 677
      xDSL Port Pinouts
      LED Descriptions
Cisco 678
      ADSL Port Pinouts
      WAN Link and Powerup Issues
Cisco 802 IDSL and 804 IDSL
      IDSL RJ-45 Port Pinouts
Cisco 827
      xDSL Port Pinouts
      Cisco 827-4V LED Descriptions
      Cisco 827 LED Descriptions
Cisco 828
      xDSL Port Pinouts
      LED Descriptions
Cisco SOHO77
      xDSL Port Pinouts
      LED Descriptions
Cisco SOHO78
      xDSL Port Pinouts
      LED Descriptions
Cisco 1401
      ATM-25 Cable
      ATM Loopback Plug
      Front-Panel LED Descriptions
Cisco 1417
      ADSL Cable
      POTS Crossover Cable
      Front-Panel LED Descriptions
Cisco WIC-1 ADSL
      Wiring
      LED Descriptions
      Connect the ADSL WAN Interface Card to the Network
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Related Information

Introduction

This document describes the port pinouts and LED statuses for specific Cisco digital subscriber line (DSL) devices.

Note: The terms "port pinouts" and "connector pinouts" are used interchangeably. In this document, pinouts are named "port pinouts."

If you experience problems with the DSL connection on these devices, verify these :

• The DSL cable between the Network Interface Device (NID)/wall jack/splitter and the Cisco DSL customer premises equipment (CPE) modem/router is the correct type.

• The correct NID is being used. If the NID is installed by a Telco, the Telco must verify its functionality.

• DSL Status LEDs show proper operation.

Note: Not all DSL CPE modem/router products use the same DSL interface port pinouts.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.

Conventions

For more information on document conventions, refer to the Cisco Technical Tips Conventions.

Cisco 605

The Asymmetric Digital Subscriber Line (ADSL) port uses an RJ-11 connector.

ADSL Port Pinouts

Rear Panel LEDs

Cisco 626

The ADSL port on a Cisco 626 uses an RJ-11 connector. It is labeled "WALL" on the rear panel.

ADSL Port Pinouts

WAN LNK LED

If the WAN LNK light does not turn on when you power up the modem:

1. Wait approximately fifteen seconds.

2. If the light does not turn on, check all cabling and connections.

3. If the light still does not turn on, turn off the power and then turn it on again.

4. If the LED is not on, call your service representative.

If the PWR/ALARM light appears red:

1. Turn off the power and then turn it on again.

2. If the LED still appears red, call your service representative.

Note: In certain circumstances in which the Cisco 626 operates correctly, the WAN LNK light appears off when the PWR/ALARM light is on. For example, this condition occurs when there is no data traffic across the WAN LNK for a period of time. During subsequent requests for data, the WAN LNK light starts to blink. This indicates that the ADSL connection sequence has begun.

Why the WAN LNK LED Turns Off

If the WAN LNK LED blinks continuously, the Cisco 626 never trains with the Cisco 6100/6200 digital subscriber line access multiplexer (DSLAM). There are several reasons why this occurs:

• The ADSL line is not connected to the Cisco 626.

• No available ATU-Cs with which the Cisco 626 trains up.

• The ADSL circuit is too long.

• Excessive noise on the ADSL circuit.

If the WAN LNK LED turns off after the Cisco 626 has been transferring data, the Cisco 626 or the 6100/6200 has the SESSION timeout set. If the timeout is set, the Cisco 626 WAN LNK LED turns off after that time period whether or not it is idle.

Cisco 627

The ADSL line port on a Cisco 627 uses a standard RJ-11 6-pin modular jack.

ADSL Port Pinouts

WAN LNK LED

If the WAN LNK light does not turn on when you power up the modem:

1. Wait approximately fifteen seconds.

2. If the light does not turn on, check all cabling and connections.

3. If the light still does not turn on, turn off the power and then turn it on again.

4. If the LED is not on, call your service representative.

Why the WAN LNK LED Turns Off

If the WAN LNK LED blinks continuously, the Cisco 627 never trains with the Cisco 6100/6200 DSLAM. There are several reasons why this occurs:

• The ADSL line is not connected to the Cisco 627.

• No available ATU-Cs with which the Cisco 627 trains up.

• The ADSL circuit is too long.

• Excessive noise on the ADSL circuit.

If the WAN LNK LED turns off after the Cisco 627 has been transferring data, the Cisco 627 or the Cisco 6100/6200 has the SESSION timeout set. If the timeout is set, the Cisco 627 WAN LNK LED turns off after that time period whether or not it is idle.

Cisco 633

xDSL Port Pinouts

On the Cisco 633 an RJ-11 connector provides an xDSL connection to external media through a standard RJ-11 6-pin modular jack.

LED Descriptions

Cisco 673

On the Cisco 673 the symmetric digital subscriber line (SDSL) port uses an RJ-11 connector.

SDSL Port Pinouts

Cisco 675 and 675e

The ADSL port on the Cisco 675/675e uses an RJ-11 connector.

ADSL Port Pinouts

LED Descriptions for the Cisco 675 and 675e

Cisco 676

The ADSL port on the Cisco 676 uses an RJ-11 connector.

ADSL Port Pinouts

WAN Link and Powerup Issues

During normal operation the ALARM LED blinks once after the unit is turned on. If the LED continues to blink or stays on, call your service representative.

The WAN LNK LED is on and blinks while the modem trains up to the network. When you power up the modem and the modem operates correctly, the WAN LNK LED remains on.

If theWAN LNK LED does not stay on or does not light at all after 45 seconds:

1. Check all cabling and connections.

2. Turn off the power and then turn it on again.

3. If the LED is still not on, call your service representative.

Note: In certain circumstances in which the Cisco 676 operates correctly, the WAN LNK LED appears off when the PWR/ALARM LED is on. For example, this condition occurs when there is no data traffic across the WAN LNK for a period of time. During subsequent requests for data, the WAN LNK LED starts to blink. This indicates that the ADSL connection sequence has begun.

If the WAN LNK LED blinks continuously and stays on, the Cisco 676 never connects to the service provider equipment. Your Cisco 676 configuration may not be compatible with the service provider's server configuration. Follow these steps:

1. Remove power from the Cisco 676 ADSL Router by removing the power cord from the router's rear panel.

2. Reconnect the power cord.

3. If the router still does not connect to the service provider, call the service provider to help you correct your configuration.

If the WAN LNK LED turns off after the Cisco 676 has been transferring data, the Cisco 676 or the service provider's server has a timeout set. Call the service provider with the length of time you remain connected before the Cisco 676 disconnects from the Internet (as accurate a length of time as possible).

If the WAN LNK LED stays on for approximately four seconds and then turns off and remains off, a user authentication failure has occurred. Either the Cisco 676 or the service provider's server contains incorrect user authentication information. Call your service provider with the amount of time that passed before the WAN LNK LED turned off.

Cisco 677

xDSL Port Pinouts

LED Descriptions

Cisco 678

The ADSL port uses an RJ-11 connector.

ADSL Port Pinouts

WAN Link and Powerup Issues

This is the normal sequence of events when you power up the router:

1. The ALARM light comes on within five seconds, flashes for half a second, then goes off.

2. Between one and ten seconds after the ALARM light goes off, the WAN LNK light starts to blink. This indicates that the router attempts to establish communication with the service provider modem in the central office.

3. After communication is established, the WAN LNK light remains on.

Under normal conditions, the ALARM light is off within six seconds of powering up the router, and within one minute the WAN LNK light is on.

If the router does not establish communication with the service provider modem, the WAN LNK light goes off. The router waits ten seconds. The WAN LNK light starts to blink when the router tries again to establish communication.

If the WAN LNK light continues to blink after attempts to establish communication, turn off the power and then turn it on. If the WAN LNK light still does not become solid within one minute, call your service representative.

If the ALARM light flashes RED or lights RED and stays on, call your service representative.

Note: With the POWER light on, the WAN LNK light appears off under certain circumstances, even though the Cisco 678 operates correctly. This condition occurs, for instance, if there is no data traffic across the WAN LNK for two minutes or more. In this case, the PPP session times out. and the WAN LNK light goes off. During subsequent requests for data across the link, the WAN LNK light starts to blink. This indicates that the ADSL connection sequence has started.

Cisco 802 IDSL and 804 IDSL

If your wall jack has an RJ-11 connector, attach the RJ-45-to-RJ-11 adapter cable to the red cable. Connect the RJ-11 connector to the IDSL wall jack.

IDSL RJ-45 Port Pinouts

Note: Pins 1, 2, 3, 6, 7,and 8 are not used.

Cisco 827

xDSL Port Pinouts

The RJ-11 connector provides xDSL connection to external media through a standard RJ-11 6-pin modular jack.

Note: Pins 1, 2, 5, and 6 are not used.

Cisco 827-4V LED Descriptions

Cisco 827 LED Descriptions

Cisco 828

xDSL Port Pinouts

The RJ-11 connector provides xDSL connection to external media through a standard RJ-11 6-pin modular jack.

Note:  Pins 1, 2, 5, and 6 are not used.

LED Descriptions

Cisco SOHO77

xDSL Port Pinouts

The RJ-11 connector provides xDSL connection to external media through a standard RJ-11 6-pin modular jacks.

Note: Pins 1, 2, 5, and 6 are not used.

LED Descriptions

Cisco SOHO78

xDSL Port Pinouts

The RJ-11 connector provides xDSL connection to external media through a standard RJ-11 6-pin modular jacks.

Note: Pins 1, 2, 5, and 6 are not used.

LED Descriptions

Cisco 1401

ATM-25 Cable

The green RJ-45-to-RJ-45 ATM-25 cable connects the Cisco 1401 through a DSL modem to the ADSL line. This cable must be Category 3, 4, or 5 unshielded twisted-pair (UTP).

ATM-25 Cable Pinouts

Note: Pins 3, 4, 5, and 6 are not used.

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

ATM Loopback Plug

An ATM loopback plug is used when a loopback test on the Cisco 1401 is performed.

ATM Loopback Plug Pinouts

Note: Pins 3, 4, 5, and 6 are not used.

Front-Panel LED Descriptions

Cisco 1417

ADSL Cable

The purple RJ-11-to-RJ-11 ADSL cable connects the Cisco 1417 to the ADSL line. This cable must be Category 3, 4, or 5 UTP. The cable that ships with the router is Category 5.

ADSL Cable Pinouts

Note: Pins 1 and 6 are not used. Pins 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 1417 to POTS splitters that use pins 3 and 4 for data. This cable is ordered from Cisco. (The Cisco 1417 uses pins 2 and 5 for data.)

If you provide your own cable, it must be Category 3, 4, or 5 UTP.

POTS Crossover Cable Pinouts

Note: Pins 1 and 6 are not used.

Front-Panel LED Descriptions

Cisco WIC-1 ADSL

Wiring

The RJ-11 connector provides xDSL connection to external media through standard RJ-11 6-pin modular jacks.

LED Descriptions

Connect the ADSL WAN Interface Card to the Network

To connect the ADSL WAN Interface Card (WIC) to the network, use the standard lavender RJ-11 cable that comes with your card.

Note: If you connect a Cisco router with an ADSL card to an RJ-11 wall jack that has the ADSL pair wired for pins 2 and 5, use the lavender crossover cable with the blue stripe. The crossover cable can be ordered as a spare part.

These steps describe how to connect the WIC with the help of the standard lavender RJ-11 cable. However, it also applies to connecting the WIC with the lavender crossover cable with the blue stripe.

1. Confirm that router is turned off.

2. Connect one end of the RJ-11 cable to the ADSL port on the card.

3. Connect the other end of the cable to the RJ-11 wall jack at your site.

4. Enter the no shut command in the router configuration.

   You must configure the ADSL card in the router to the no shutdown state to connect the card to the network.

5. Verify that the CD LED goes on.This indicates that the card is connected to the network.

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Related Information

• Compatibility of Components in Cisco DSL Equipment
• DSL Product Support Information
• Technical Support - Cisco Systems