Linksys RTP300 - Broadband Router With 2 Phone Ports Guide

A Division of Cisco Systems, Inc.
®
Model No.
with 2 Phone Ports
Broadband Router
RTP300
Installation and Troubleshooting Guide
Voice

Broadband Router with 2 Phone Ports
Copyright and Trademarks
Specifications are subject to change without notice.Linksys is a registered trademark or trademark of Cisco Systems,
Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2005 Cisco Systems, Inc. All rights
reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.
How to Use this Guide
Your guide to the Broadband Router with 2 Phone Ports has been designed to make understanding networking
with the Router easier than ever. Look for the following items when reading this guide:
In addition to these symbols, there are definitions for technical terms that are presented like this:
Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like
this:
Figure numbers and descriptions can also be found in the “List of Figures” section.
This exclamation point means there is a caution or warning and is
something that could damage your property or the Router.
Thisquestion markprovides youwith areminderaboutsomethingyou
might need to do while using the Router.
This checkmark means there is a note of interest and is something you
should pay special attention to while using the Router.
word: definition.
Figure 0-1: Sample Figure Description
RTP300-VD-UG-50422NC JL
WARNING: This product contains chemicals, including lead, known to the State of California to cause
cancer, and birth defects or other reproductive harm. Wash hands after handling.

Broadband Router with 2 Phone Ports

Broadband Router with 2 Phone Ports
Table of Contents
Chapter 1: Introduction 1
Welcome 1
What’s in this Guide? 2
Chapter 2: Networking Basics 5
An Introduction to Local Area Networks 5
The Use of IP Addresses 5
Chapter 3: Getting to Know the Router 7
The Back Panel 7
The Front Panel 8
Chapter 4: Connecting the Router 9
Overview 9
Connecting the Router to Your Broadband Modem 9
Connecting the Router to Your Existing Router 11
Placement Options 13
Chapter 5: Configuring the Router 15
Overview 15
How to Access the Web-based Utility 18
The Setup Tab - Basic Setup 19
The Setup Tab - DDNS 23
The Setup Tab - MAC Address Clone 25
The Setup Tab - Advanced Routing 26
The Security Tab - Firewall 28
The Security Tab - VPN Passthrough 29
The Access Restrictions Tab - Filter 30
The Access Restrictions Tab - Device Access Control 32
The Applications & Gaming Tab - Port Range Forwarding 33
The Applications & Gaming Tab - Port Triggering 34
The Applications & Gaming Tab - DMZ 36
The Applications & Gaming Tab - QoS 37
The Administration Tab - Management 39
The Administration Tab - Log 40
The Administration Tab - Factory Defaults 41
The Administration Tab - Diagnostics 42
The Status Tab - Router 43
The Status Tab - Local Network 45
The Status Tab - Voice 46
The Voice Tab 47
Appendix A: Troubleshooting 49
Common Problems and Solutions 49
Frequently Asked Questions 63
Appendix B: Finding the MAC Address and IP
Address for Your Ethernet Adapter 69
Windows 98 or Me Instructions 69
Windows 2000 or XP Instructions 70
For the Router’s Web-based Utility 70
Appendix C: Windows Help 71
Appendix D: Glossary 73
Appendix E: Specifications 79
Appendix F: Warranty Information 81
Appendix G: Regulatory Information 83
Appendix H: Contact Information 85

Broadband Router with 2 Phone Ports

Broadband Router with 2 Phone Ports
List of Figures
Figure 3-1: Back Panel 7
Figure 3-2: Front Panel 8
Figure 4-1: Connect the Modem 9
Figure 4-2: Connect a PC 9
Figure 4-3: Connect the Power 10
Figure 4-4: Connect a Telephone 10
Figure 4-5: Router Connected to Another Router 11
Figure 4-6: Connect the Existing Router 12
Figure 4-7: Connect the Power 12
Figure 4-8: Connect a Telephone 12
Figure 4-9: Attaching the Stand (Optional) 13
Figure 4-10: Measurement between Wall-Mount Slots 14
Figure 5-1: Router’s IP Address 18
Figure 5-2: Router Login 18
Figure 5-3: Setup Tab - Basic Setup (Obtain an
IP automatically) 19
Figure 5-4: Static IP 20
Figure 5-5: PPPoE 21
Figure 5-6: Setup Tab - DDNS (DynDNS.org) 24
Figure 5-7: Setup Tab - DDNS (TZO.com) 24
Figure 5-8: Setup Tab - MAC Address Clone 25
Figure 5-9: Setup Tab - Advanced Routing 26
Figure 5-10: Routing Table Entry List 27
Figure 5-11: Security Tab - Firewall 28
Figure 5-12: Security Tab - VPN Passthrough 29
Figure 5-13: Access Restrictions Tab - Filter 30
Figure 5-14: Filtered MAC Address 30
Figure 5-15: Access Restrictions Tab - Device Access Control 32
Figure 5-16: Applications & Gaming Tab - Port
Range Forwarding 33
Figure 5-17: Applications & Gaming Tab - Port Triggering 34
Figure 5-18: Applications & Gaming Tab - DMZ 36
Figure 5-19: Applications & Gaming Tab - QoS 37
Figure 5-20: QoS - Create Rule 38
Figure 5-21: Administration Tab - Management 39
Figure 5-22: Administration Tab - Log 40
Figure 5-23: Administration Tab - Factory Defaults 41
Figure 5-24: Administration Tab -Diagnostics 42
Figure 5-25: Ping Test 42
Figure 5-26: Traceroute Test 42
Figure 5-27: Status Tab - Router 43
Figure 5-28: Status Tab - Local Network 45
Figure 5-29: DHCP Active IP Table 45
Figure 5-30: Status Tab - Voice 46
Figure 5-31: Voice Tab 47
Figure B-1: IP Configuration Screen 69
Figure B-2: MAC/Adapter Address 69
Figure B-3: MAC/Physical Address 70
Figure B-4: MAC Address Clone 70
Figure B-5: MAC Address Filter 70

Broadband Router with 2 Phone Ports

Broadband Router with 2 Phone Ports
1
Chapter 1: Introduction
Welcome
Chapter 1: Introduction
Welcome
Thank you for choosing the Broadband Router with 2 Phone Ports. ThisRouter will allow your computers to share
a high-speed Internet connection as well as resources, including files and printers. And after you have set up
your Internet phone service, you will be able to make phone or fax calls using the Internet.
How does the Router do all of this? By connecting your computers and peripherals, including phones or fax
machines, to the Router and connecting the Router to your cable or DSL modem, then the Router can direct and
control communications for your network.
But what does all of this mean?
Networks are useful tools for sharing Internet access and computer resources. Multiple computers can share
Internet access, so you don’t need more than one high-speed Internet connection. With Internet phone service,
your Internet access can now be shared by your phones or fax machines as well. You will be able to make phone
calls using the account you set up with your Internet phone service provider, even while you’re surfing the
Internet. Plus, you can access one printer from different computers and access data located on another
computer’s hard drive. Networks are even used for playing multiplayer video games. So, networks not only are
useful in homes and offices, but also can be fun.
PCs on a wired network create a LAN, or Local Area Network. They are connected with Ethernet cables, which is
why the network is called “wired”.
To create your network, install and set up the Router. To guide you through the process, Linksys strongly
recommends that you run the Setup Wizard on the Setup CD-ROM. If you prefer to manually set up the Router,
ethernet: an IEEE standard network
protocol that specifies how data is
placed on and retrieved from a common
transmission medium.
lan (local area network): the computers
and networking products that make up
the network in your home or office.
browser: an application program that
providesa way to look at and interact
with all the information on the World
Wide Web.
mbps: one million bits per second; a unit
of measurement for data transmission.
nat (network address translation): NAT
technology translated IP addresses of a
local area network to a different IP
address for the Internet.

Broadband Router with 2 Phone Ports
2Chapter 1: Introduction
What’s in this Guide?
use the instructions in this Installation and Troubleshooting Guide to help you. These instructions should be all
you need to get the mostout of theRouter.
What’s in this Guide?
This guide covers the basic steps for setting up a network with a router. After going through “Chapter 3: Getting
to Know the Router,” most users will only need to use the following chapters:
• Chapter 4: Connecting the Router
This chapter instructs you on how to connect the Router to your cable or DSLmodem, PCs, and telephones
(or fax machines).
• Chapter 5: Configuring the Router
This chapter explains how to configure the Router using your web browser and the Router’s Web-based
Utility. You will configure the Router using the settings provided by your ISP.
When you’re finished with the basic steps, then you are ready to connect to the Internet.
You also have other chapters available for reference:
• Chapter 1: Introduction
This chapter describes the Router’s applications and this Installation and Troubleshooting Guide.
• Chapter 2: Networking Basics
This chapter briefly explains how a network functions.
• Appendix A: Troubleshooting
This appendix describes some possible problems and solutions, as well as frequently asked questions,
regarding installation and use of the Router.

Broadband Router with 2 Phone Ports
3
Chapter 1: Introduction
What’s in this Guide?
• Appendix B: Finding the MAC Address and IP Address for Your Ethernet Adapter
This appendix instructs you on how to find the MAC address or Ethernet address of your PC’s Ethernet
network adapter.
• Appendix C: Windows Help
This appendix describes how you can use Windows Help for instructions about networking, such as
installing the TCP/IP protocol.
• Appendix D: Glossary
This appendix gives a brief glossary of terms frequently used in networking.
• Appendix E: Specifications
This appendix provides the technical specifications for the Router.
• Appendix F: Warranty Information
This appendix supplies the warranty information for the Router.
• Appendix G: Regulatory Information
This appendix supplies the regulatory information regarding the Router.
• Appendix H: Contact Information
This appendix provides contact information for a variety ofLinksys resources, including Technical Support.

Broadband Router with 2 Phone Ports
4Chapter 1: Introduction
What’s in this Guide?

Broadband Router with 2 Phone Ports
5
Chapter 2: Networking Basics
An Introduction to Local Area Networks
Chapter 2: Networking Basics
An Introduction to Local Area Networks
Simply put, a router is a network device that connects two networks together.
The Router connects your local area network (LAN), or the group of PCs in your home or office, to the Internet.
The Router processes and regulates the data that travels between these two networks.
The Router’s Network Address Translation (NAT) technology protects your network of PCs so users on the
Internet cannot “see” your PCs. This is how your LAN remains private. The Router protects your network by
inspecting the first packet coming in through the Internet port before delivery to the final destination on one of
the Ethernet ports. The Router inspects Internet port services like the web server, ftp server, or other Internet
applications, and, if allowed, it will forward the packet to the appropriate PC on the LAN side.
The Use of IP Addresses
IP stands for Internet Protocol. Every device in an IP-based network, including PCs, print servers, and routers,
requires an IP address to identify its location, or address, on the network. This applies to both the Internet and
LAN connections.
There are two ways of assigning IP addresses to your network devices.
A static IP address is a fixed IP address that you assign manually to a PC or other device on the network. Since a
static IP address remains valid until you disable it, static IP addressing ensures that the device assigned it will
always have that same IP address until you change it. Static IP addresses are commonly used with network
devices such as server PCs or print servers.
static ip address: a fixed address
assigned to a computer or device that is
connected to a network.
nat (network address translation): NAT
technology translates IP addresses ofa
local area network to a different IP
address for the Internet.

Broadband Router with 2 Phone Ports
6Chapter 2: Networking Basics
The Use of IP Addresses
If you use the Router to share your cable or DSL Internet connection, contact your ISP to find out if they have
assigned a static IP addressto your account. If so, you will need that static IP address when configuring the
Router. You can get the information from your ISP.
A dynamic IP address is automatically assigned to a device on the network. These IP addresses are called
dynamic because they are only temporarily assigned to the PC or other device. After a certain time period, they
expire and may change. If a PC logs onto the network (or the Internet) and its dynamic IP address has expired,
the DHCP server will assign it a new dynamic IP address.
A DHCP server can either be a designated PC on the network or another network device, such as the Router. By
default, the Router’s Internet Connection Type is Obtain an IP automatically (DHCP).
The PC or network device obtaining an IP address is called the DHCP client. DHCP frees you from having to
assign IP addresses manually every time a new user is added to your network.
For DSL users, many ISPs may require you to log on with a user name and password to gain access to the
Internet. This is a dedicated, high-speed connection type called Point to Point Protocol over Ethernet (PPPoE).
PPPoE is similar to a dial-up connection, but PPPoE does not dial a phone number when establishing a
connection. It also will provide the Router with a dynamic IP address to establish a connection to the Internet.
By default, a DHCP server (on the LAN side) is enabled on the Router. If you already have a DHCP server running
on your network, you MUST disable one of the two DHCP servers. If you run more than one DHCP server on your
network, you will experience network errors, such as conflicting IP addresses. To disable DHCP on the Router,
see the Basic Setup section in “Chapter 5: Configuring the Router.”
dynamic ip address: a temporary IP
address assigned by a DHCP server.
dhcp (dynamic host configuration
protocol): a protocol that lets one device
on a local network, known as a DHCP
server, assign temporary IP addresses to
the other network devices, typically
computers.

Broadband Router with 2 Phone Ports
7
Chapter 3: Getting to Know the Router
The Back Panel
Chapter 3: Getting to Know the Router
The Back Panel
The Router’s ports and the Reset button are located on the back panel of the Router.
Internet This Internet port connects to your cable or DSL modem.
Phone1 For your primary Internet phone line,the Phone1 port allows you to connect the Router to
your telephone (or fax machine) using an RJ-11 telephone cable (not included).
Phone2 If you have a second Internet phone line, the Phone2 port allows you to connect the Router
to your second telephone (or fax machine) using an RJ-11 telephone cable (not included).
Ethernet 1-4 These four Ethernet ports connect to network devices, such as PCs or more switches.
Reset Button There are two ways to reset the Router'sfactory defaults. Either press the Reset Button for
five seconds, or restore the defaults from the Router's Web-based Utility.
Power The Power port is where you will connect the power adapter.
Figure 3-1: Back Panel
NOTE: The Voice Factory
DefaultfeatureoftheRouter’s
Web-basedUtilityisprotected
by a password available only
from your Internet phone
service provider. Contact your
provider for more information.
NOTE: The Internet port only
accepts a straight-through
cable. Do NOT connect a
crossover cable to the
Internet port.

Broadband Router with 2 Phone Ports
8Chapter 3: Getting to Know the Router
The Front Panel
The Front Panel
The Router’s LEDs, which inform you about network activities, are located on the front panel.
POWER Blue/Red. The POWER LED lights up blue when the Router is powered on. If the blue LED is
flashing, the Router is booting up or upgrading its firmware. If the LED lights up red, then
disconnect the power, and wait five seconds. Then reconnect the power.
ETHERNET 1-4 Blue. The ETHERNET LED lights up when there is an active connection through the
corresponding port. If the LED is flashing, then there is traffic moving through that port.
PHONE 1-2 Blue. The PHONE LED is solidly lit when a telephone or fax machine has an active or
registered connection to your Internet phone service provider through the corresponding
port (PHONE 1 or 2). It flashes when the phone is being used or is off the hook.
INTERNET Blue. The INTERNET LED lights up when the Router is connected to your cable or DSL
modem. If the LED is flashing, the Router is sending or receiving data over the Internet port.
Proceed to “Chapter 4: Connecting the Router.”
Figure 3-2: Front Panel

Broadband Router with 2 Phone Ports
9
Chapter 4: Connecting the Router
Overview
Chapter 4: Connecting the Router
Overview
This chapter includes two sets of instructions. If the Broadband Router with 2 Phone Ports will be the
only router in your network, follow the instructions in “Connecting the Router to Your Broadband
Modem.” If you already have a router in your network and want to add the Broadband Router with
2 Phone Ports, follow the instructions in “Connecting the Router to Your Existing Router.”
Connecting the Router to Your Broadband Modem
1. Make sure that your devices are powered off, including the Router, PCs, and broadband modem.
2. Connect your broadband modem’s Ethernet cable to the Router’s Internet port.
3. Connect one end of an Ethernet network cable to one of the numbered ports on the back of the
Router. Connect the other end to an Ethernet port on a network device, e.g., a PC, print server, or
switch.
Repeat this step to connect more PCs or other network devices to the Router.
NOTE: Make sure your telephone is set to its tone setting (not pulse).
Figure 4-2: Connect a PC
Figure 4-1: Connect the Modem

Broadband Router with 2 Phone Ports
10 Chapter 4: Connecting the Router
Connecting the Router to Your Broadband Modem
4. Power on the broadband modem.
5. Connect the included power adapter to the Router’s Power port, and then plug the power
adapter into an electrical outlet. The Power LED on the front panel will light up as soon as the
Router powers on.
6. Plug a standard telephone into the Router’s Phone1 port.
7. If you have a second Internet phone or fax line, connect a telephone or fax machine to the
Router’s Phone2 port.
8. Power on your PC(s).
If you want to mount the Router on a wall, proceed to the following section, “Placement
Options.” Otherwise, proceed to “Chapter 5: Configuring the Router.”
Figure 4-3: Connect the Power
Figure 4-4: Connect a Telephone
IMPORTANT: Do not connect the Phone port to a telephone wall jack. Make sure you only connect
a telephone or fax machine to the Phone port. Otherwise, the Router or the telephone wiring in your
home or office may be damaged.

Broadband Router with 2 Phone Ports
11
Chapter 4: Connecting the Router
Connecting the Router to Your Existing Router
Connecting the Router to Your Existing Router
Linksys recommends that you replace your existing router with the Broadband Router with 2 Phone
Ports. However, if you would like to keep your existing router because it has wireless capability or
other features, then you can use the following instructions to connect the Broadband Router with 2
Phone Ports to your existing router, while keeping your wired PCs connected to your existing router.
For example, the following connection diagram shows the Broadband Router with 2 Phone Ports
connected to your existing router and phone.
Figure 4-5: Router Connected to Another Router
NOTE: Do NOT connect any
wired PCs to the Broadband
Router with 2 Phone Ports.
Telephone
Router
Cable/DSL
Modem
Internet
PCs
Broadband Router
with 2 Phone Ports

Broadband Router with 2 Phone Ports
12 Chapter 4: Connecting the Router
Connecting the Router to Your Existing Router
To connect the Broadband Router with 2 Phone Ports to your existing router, follow these
instructions:
1. Connectan Ethernetcable to theInternet port onthe back of the BroadbandRouter with 2 Phone
Ports. Then connect the other end to one of the Ethernet network ports on your existing router.
2. Connect the included power adapter to the Power port of the Broadband Router with 2 Phone
Ports, and then plug the power adapter into an electrical outlet. The Power LED on the front
panel will light up as soon as the Broadband Router with 2 Phone Ports powers on.
3. Plug a standard telephone into the Phone1 port of the Broadband Router with 2 Phone Ports.
4. If you have a second Internet phone or fax line, connect a telephone or fax machine to the
Phone2 port.
Proceed to the following section, “Placement Options.”
IMPORTANT: Do not connect the Phone port to a telephone wall jack. Make sure you only connect
a telephone or fax machine to the Phone port. Otherwise, the Router or the telephone wiring in your
home or office may be damaged.
Figure 4-6: Connect the Existing Router
Figure 4-7: Connect the Power
Figure 4-8: Connect a Telephone