Table of Contents

Purpose
Product Description

System Features

Hardware Features
Software Features
Compliance

Back Panel Connectors
System Memory
Environmental Constraints

Network Management, Security, and Billing Applications

Cisco 678 ADSL Router Overview

Purpose

This chapter provides an overview of the Cisco 678 asymmetric digital subscriber line (ADSL) router. It also describes the general applications available with the Cisco 678.

Note This chapter documents general product features available in the Cisco 678 product line. Please refer to the Release Notes for the Cisco Broadband Operating System Release 2.3.0 for a current list of upgraded software features.

Product Description

The Cisco 678 provides home connectivity to an ADSL service provider network over an ADSL/ATM physical layer. The Cisco 678 receives and transmits at up to the following adaptive rates:

A 10/100BaseT interface is provided for connection to an Ethernet LAN or Ethernet-equipped PC.

Figure 1-1 shows a front view of the Cisco 678 ADSL router.

System Features

This section defines the system features of the Cisco 678 ADSL router.

Hardware Features

The following features are common to all of the Cisco 678 products:

• Discrete Multi-Tone (DMT Issue 2) frequency modulation-based, G.Lite (G.992.2) splitterless ADSL and Carrierless Amplitude Modulation and Phase (CAP)-based ADSL physical layer

• Rate adaptive DSL (DMT Issue 2 encoding) interface, with maximum receive data rates up to 8.032 Mbps and transmit data rate up to 864 Kbps

• Near-symmetric data rates support up to 864 Kbps bandwidth upstream and downstream on the ADSL interface

• Autonegotiating 10BaseT or 100BaseTX Ethernet interface, compliant with IEEE 802.3 and 802.3u Fast Ethernet

• ATM cell delineation adherent to ITU-T I.432

• Supports ATM Forum-compliant permanent virtual circuits (PVCs)

• Status LEDs indicating Ethernet and ADSL activity

Software Features

Standards Compliance

• American National Standards Institute (ANSI) T1.413 Issue 2

• Point-to-Point Protocol (PPP) (RFC 1661)

• Multiprotocol Encapsulation over ATM Adaptation Layer 5(RFC 1483)

• ATM Forum UNI Version 3.1 PVC

• IEEE 802.3 and 802.3u 10BaseT and 100BaseTX Physical Layer Specification

• IEEE 802.1d Transparent Learning Bridging

• PPP Bridging Control Protocol (BCP) (RFC 1638)

• Splitterless Asymmetric Digital Subscriber Line (ADSL) Transceivers G.992.2

Routing Support

• Internet Protocol (RFC 791)

  • User Datagram Protocol (RFC 768)

  • Internet Control Message Protocol (RFC 792)

  • Ethernet Address Resolution Protocol (RFC 826)

  • RIP version 1 and RIP version 2 updating of routing tables

• Static routing

• Remote Authentication Dial-In User Service (RADIUS) Security and Accounting (RFC 2058, RFC 2059)

• Dynamic Host Configuration Protocol (DHCP) client and server

• Network Address Translation (NAT)

• Transparent learning bridge:

  • Multiprotocol Encapsulation over ATM Adaptation Layer 5 (RFC 1483)

  • PPP (Bridging Control Protocol) (RFC 1638)

• Management channel support for remote configuration/management

Compliance

• FCC Part 15, 1997---United States Federal Communications Commission Part 15, Subpart B

• CSA Std. C108.8 (1993)---EMC (Industry Canada, Radio Interference Regulations, Issue 2 1992) Canadian Standard C108.8

• VCCI, 1995---Agreement of Voluntary Control Council for Interference by Information Technology Equipment (VCCI Japan), August 1995

• AS/NZS 3548: 1995---EMI (Australia), Spectrum Management Association

• EN55022: 1994/CISPR 22: 1993---Limits and methods of measurement of radio interference characteristics of information technology equipment.

• EN50081-1:1997---Electromagnetic compatibility---Generic emission standard, Part 1: Residential, commercial and light industry

• CNS 13438---EMI Standard (Taiwan) regulated by BCIQ Agency

• UL 1950 Third Edition

• TUV per EN60950/IEC950 Amendment 4

• CE Marked for EMC and Safety

Back Panel Connectors

Table 1-1 describes the function of the connectors and switches on the Cisco 678 back panel. See Figure 1-2 for the location of the connectors.

System Memory

The Cisco 678 ADSL router is equipped with 4 MB of Extended Data Out (EDO) DRAM.

Environmental Constraints

The Cisco 678 ADSL router operates in an ambient temperature environment of 32º to 104ºF (0º to 40ºC) and is stored in an ambient temperature environment of -40ºto 185ºF (-40ºto 85ºC).

Network Management, Security, and Billing Applications

The general applications supported by the Cisco 678 ADSL router are:

For more information on each of these applications, see the "Configure Applications" section.

Posted: Tue Feb 15 19:08:21 PST 2000
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