ZyXEL Communications Prestige 2002 User Manual

Prestige 2002 Series

VoIP Analog Telephone Adaptor

User’s Guide

Version 3.60
August 2004

Prestige 2002 Series User’s Guide

Copyright

Copyright © 2004 by ZyXEL Communications Corporation.

The contents of this publication may not be reproduced in any part or as a whole, transcribed,
stored in a retrieval system, translated into any language, or transmitted in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or
otherwise, without the prior written permission of ZyXEL Communications Corporation.

Published by ZyXEL Communications Corporation. All rights reserved.

Disclaimer

ZyXEL does not assume any liability arising out of the application or use of any products, or
software described herein. Neither does it convey any license under its patent rights nor the
patent rights of others. ZyXEL further reserves the right to make changes in any products
described herein without notice. This publication is subject to change without notice.

Trademarks

ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL
Communications, Inc. Other trademarks mentioned in this publication are used for
identification purposes only and may be properties of their respective owners.

Copyright 3

Prestige 2002 Series User’s Guide

Federal Communications

Commission (FCC) Interference

Statement

This device complies with Part 15 of FCC rules. Operation is subject to the following two
conditions:

• This device may not cause harmful interference.

• This device must accept any interference received, including interference that may cause
undesired operations.

This equipment has been tested and found to comply with the limits for a Class B digital
device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy, and if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.

If this equipment does cause harmful interference to radio/television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Notice 1

Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.

Certifications

Go to www.zyxel.com

1 Select your product from the drop-down list box on the ZyXEL home page to go to that

product's page.

2 Select the certification you wish to view from this page

4 Federal Communications Commission (FCC) Interference Statement

Prestige 2002 Series User’s Guide

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects
in materials or workmanship for a period of up to two years from the date of purchase. During
the warranty period, and upon proof of purchase, should the product have indications of failure
due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the
defective products or components without charge for either parts or labor, and to whatever
extent it shall deem necessary to restore the product or components to proper operating
condition. Any replacement will consist of a new or re-manufactured functionally equivalent
product of equal value, and will be solely at the discretion of ZyXEL. This warranty shall not
apply if the product is modified, misused, tampered with, damaged by an act of God, or
subjected to abnormal working conditions.

Note

Repair or replacement, as provided under this warranty, is the exclusive remedy of the
purchaser. This warranty is in lieu of all other warranties, express or implied, including any
implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in
no event be held liable for indirect or consequential damages of any kind of character to the
purchaser.

To obtain the services of this warranty, contact ZyXEL's Service Center for your Return
Material Authorization number (RMA). Products must be returned Postage Prepaid. It is
recommended that the unit be insured when shipped. Any returned products without proof of
purchase or those with an out-dated warranty will be repaired or replaced (at the discretion of
ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced products
will be shipped by ZyXEL to the corresponding return address, Postage Paid. This warranty
gives you specific legal rights, and you may also have other rights that vary from country to
country.

Safety Warnings

1 To reduce the risk of fire, use only No. 26 AWG or larger telephone wire.

2 Do not use this product near water, for example, in a wet basement or near a swimming

pool.

3 Avoid using this product during an electrical storm. There may be a remote risk of

electric shock from lightening.

ZyXEL Limited Warranty 5

Prestige 2002 Series User’s Guide

Please have the following information ready when you contact customer support.

• Product model and serial number.

• Warranty Information.

• Date that you received your device.

• Brief description of the problem and the steps you took to solve it.

Customer Support

METHOD

LOCATION

WORLDWIDE

NORTH
AMERICA

GERMANY

FRANCE

SPAIN

DENMARK

NORWAY

SWEDEN

FINLAND

a. “+” is the (prefix) number you enter to make an international telephone call.

SUPPORT E-MAIL TELEPHONE

SALES E-MAIL FAX FTP SITE

[e-mail] [phone] www.zyxel.com

[e-mail] [phone] ftp.zyxel.com

[e-mail] [phone]

[phone]

[e-mail] [phone] ftp.us.zyxel.com

[e-mail] [phone] www.zyxel.de ZyXEL Deutschland GmbH.

[e-mail] [phone]

[e-mail]

[e-mail] [phone] www.zyxel.es Z y X EL C o m m u n i ca t i o n s

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[e-mail] [phone] www.zyxel.fi Z yXEL Comm un i cations O y

[e-mail] [phone]

[phone] www.zyxel.fr Z yX E L F r an c e

[phone]

[phone]

[phone] www.zyxel.dk Z y X E L C o m m u n i c a t i o n s A / S

[phone]

[phone] www.zyxel.no Z y X E L C o m m u n i c a t i o n s A / S

[phone]

[phone] www.zyxel.se ZyXEL Communications A/S

[phone]

A

WEB SITE

www.europe.zyxel.com

ftp.europe.zyxel.com

www.us.zyxel.com ZyXEL Communications Inc.

REGULAR MAIL

ZyXEL Communications Corp.
6 Innov ati on Roa d II

Sc ience Park
Hs inchu 3 00
Ta iw a n

1130 N. Miller St.
Ana hei m
CA 92806- 2001
U.S.A.

Adenauerstr. 20/A2 D-52146
Wuerselen
Germany

1 rue de s Ve rg er s
Ba t. 1 / C
69760 Limonest
France

A l e j a n d r o V i l l e g a s 3 3
1 º , 2 8 0 4 3 M a d r i d
Spain

Col um bu sv ej 5
2860 Soeborg
Denmark

Ni ls Hansens vei 13
0667 Oslo
Norway

Sjöporten 4, 41764 Göteborg
Sweden

Mal mi nk aa ri 10
00700 Helsinki
Finland

6 Customer Support

Prestige 2002 Series User’s Guide

Table of Contents

Copyright .................................................................................................................. 3

Federal Communications Commission (FCC) Interference Statement ............... 4

ZyXEL Limited Warranty.......................................................................................... 5

Customer Support.................................................................................................... 6

List of Figures ........................................................................................................ 11

List of Tables .......................................................................................................... 13

Preface .................................................................................................................... 15

Chapter 1

Introducing the Prestige........................................................................................ 17

1.1 Prestige 2002 VoIP Analog Telephone Adaptor Overview .................................17

1.2 Prestige 2002L VoIP Analog Telephone Adaptor with Lifeline ...........................17

1.3 Features .............................................................................................................17

1.4 Applications ........................................................................................................19

1.4.1 Make Calls via Internet Telephony Service Provider ................................19

1.4.2 Make Calls via IP-PBX ..............................................................................20

Chapter 2

Introducing the Web Configurator........................................................................ 23

2.1 Web Configurator Overview ...............................................................................23

2.2 Accessing the Prestige Web Configurator .........................................................23

2.3 Resetting the Prestige ........................................................................................25

2.3.1 Procedure To Use The Reset Button ........................................................25

2.4 Navigating the Prestige Web Configurator .........................................................25

2.5 Common Screen Command Buttons .................................................................27

Chapter 3

System Screens ..................................................................................................... 29

3.1 System Overview ...............................................................................................29

3.2 General Setup ....................................................................................................29

3.2.1 Domain Name ...........................................................................................29

3.3 General Setup Configuration ..............................................................................29

Table of Contents 7

Prestige 2002 Series User’s Guide

3.4 Configuring Password ........................................................................................30

3.5 Pre-defined NTP Time Servers List ....................................................................31

3.6 Configuring Time Setting ....................................................................................32

Chapter 4

Ethernet Screens.................................................................................................... 35

4.1 ETHERNET Overview ........................................................................................35

4.1.1 IP Address and Subnet Mask ...................................................................35

4.1.2 DNS Server Address Assignment .............................................................35

4.1.3 PPPoE Encapsulation ...............................................................................36

4.2 Configuring Ethernet ..........................................................................................36

4.3 Configuring the Ethernet Management Port .......................................................38

Chapter 5

Introduction to VoIP ............................................................................................... 39

5.1 Introduction to VoIP ............................................................................................39

5.2 Introduction to SIP ..............................................................................................39

5.2.1 SIP Identities .............................................................................................39

5.2.1.1 SIP Number .....................................................................................39

5.2.1.2 SIP Service Domain ........................................................................39

5.2.2 SIP Call Progression .................................................................................40

5.2.3 SIP Servers ...............................................................................................40

5.2.3.1 SIP User Agent Server ....................................................................40

5.2.3.2 SIP Proxy Server .............................................................................41

5.2.3.3 SIP Redirect Server ........................................................................41

5.2.3.4 SIP Register Server ........................................................................42

5.2.4 RTP ...........................................................................................................42

5.3 STUN .................................................................................................................42

5.3.1 NAT ...........................................................................................................42

5.3.2 NAT Types ................................................................................................43

5.3.2.1 Full Cone NAT .................................................................................43

5.3.2.2 Restricted Cone NAT .......................................................................44

5.3.2.3 Port Restricted Cone NAT ...............................................................44

5.3.2.4 Symmetric NAT ...............................................................................45

5.4 SIP ALG .............................................................................................................46

5.5 Pulse Code Modulation ......................................................................................46

5.6 Voice Coding ......................................................................................................46

5.6.1 G.711 .........................................................................................................46

5.6.2 G.729 ........................................................................................................46

5.7 PSTN Call Setup Signaling ................................................................................46

8 Table of Contents

Prestige 2002 Series User’s Guide

Chapter 6

VoIP Screens........................................................................................................... 47

6.1 VoIP Introduction ................................................................................................47

6.2 VoIP Configuration .............................................................................................47

6.3 Advanced VoIP Settings Configuration ..............................................................48

6.4 Quality of Service (QoS) ....................................................................................51

6.4.1 Type Of Service (ToS) ...............................................................................51

6.4.2 DiffServ .....................................................................................................51

6.4.2.1 DSCP and Per-Hop Behavior ..........................................................51

6.4.3 VLAN ........................................................................................................51

6.5 QoS Configuration ..............................................................................................52

Chapter 7

Phone ...................................................................................................................... 53

7.1 Phone Introduction .............................................................................................53

7.1.1 Voice Activity Detection/Silence Suppression ...........................................53

7.1.2 Comfort Noise Generation ........................................................................53

7.1.3 Echo Cancellation .....................................................................................53

7.2 Phone Port Configuration ...................................................................................53

Chapter 8

Phone Book ............................................................................................................ 55

8.1 Phone Book Introduction ....................................................................................55

8.1.1 Speed Dial ................................................................................................55

8.1.1.1 Peer-to-Peer Calls ...........................................................................55

8.1.2 Lifeline (Prestige 2002L) ...........................................................................55

8.2 Speed Dial Configuration ...................................................................................55

8.3 Lifeline Configuration (Prestige 2002L) ..............................................................57

Chapter 9

Logs......................................................................................................................... 59

9.1 Viewing Logs ......................................................................................................59

9.1.1 Log Message Descriptions .......................................................................60

Chapter 10

Maintenance ........................................................................................................... 63

10.1 Maintenance Overview .....................................................................................63

10.2 Status Screen ...................................................................................................63

10.3 F/W Upload Screen ..........................................................................................64

10.4 Configuration Screen .......................................................................................66

10.4.1 Backup Configuration .............................................................................67

10.4.2 Restore Configuration .............................................................................67

10.4.3 Back to Factory Defaults .........................................................................68

Table of Contents 9

Prestige 2002 Series User’s Guide

10.5 Restart Screen .................................................................................................69

Chapter 11

Troubleshooting ..................................................................................................... 71

11.1 Problems Starting Up the Prestige ...................................................................71

11.2 Problems with the LAN or PC LED ...................................................................71

11.3 Problems with the LAN Interface ......................................................................72

11.4 Problems with Internet Access .........................................................................72

11.5 Problems with the Password ............................................................................72

11.6 Problems with the Web Configurator ................................................................73

11.7 Problems with Telephone or Telephone Port ....................................................73

11.8 Problems with Voice Service ............................................................................74

Appendix A

Hardware Specifications .......................................................................................75

Appendix B

Setting up Your Computer’s IP Address.............................................................. 77

Appendix C

IP Subnetting .......................................................................................................... 89

Appendix D

PPPoE ..................................................................................................................... 97

Index........................................................................................................................ 99

10 Table of Contents

Prestige 2002 Series User’s Guide

List of Figures

Figure 1 Internet Telephony Service Provider Application ..................................... 20

Figure 2 IP-PBX Application .................................................................................. 21

Figure 3 Web Configurator IP Address ................................................................. 23

Figure 4 Enter Password ........................................................................................ 24

Figure 5 Change Password ................................................................................... 24

Figure 6 Web Configurator ..................................................................................... 26

Figure 7 System General ...................................................................................... 30

Figure 8 Password ................................................................................................. 30

Figure 9 Time Setting ............................................................................................. 32

Figure 10 ETHERNET ............................................................................................ 37

Figure 11 ETHERNET Mgnt Port ........................................................................... 38

Figure 12 SIP User Agent Server ........................................................................... 41

Figure 13 SIP Proxy Server ................................................................................... 41

Figure 14 SIP Redirect Server ............................................................................... 42

Figure 15 NAT ........................................................................................................ 43

Figure 16 Full Cone NAT ........................................................................................ 44

Figure 17 Restricted Cone NAT ............................................................................. 44

Figure 18 Port Restricted Cone NAT ...................................................................... 45

Figure 19 Symmetric NAT ...................................................................................... 45

Figure 20 VoIP ....................................................................................................... 47

Figure 21 VoIP Advanced ...................................................................................... 49

Figure 22 DiffServ: Differentiated Service Field ..................................................... 51

Figure 23 QoS ........................................................................................................ 52

Figure 24 Phone Port ............................................................................................. 54

Figure 25 Phone Book ........................................................................................... 56

Figure 26 Lifeline ................................................................................................... 57

Figure 27 View Log ................................................................................................ 59

Figure 28 System Status ........................................................................................ 63

Figure 29 Firmware Upload .................................................................................... 65

Figure 30 Firmware Upload In Process .................................................................. 66

Figure 31 Network Temporarily Disconnected ....................................................... 66

Figure 32 Firmware Upload Error ........................................................................... 66

Figure 33 Configuration ......................................................................................... 67

Figure 34 Configuration Upload Successful ........................................................... 68

Figure 35 Network Temporarily Disconnected ....................................................... 68

Figure 36 Reset Warning Message ........................................................................ 69

Figure 37 Restart Screen ....................................................................................... 69

Figure 38 WIndows 95/98/Me: Network: Configuration .......................................... 78

List of Figures 11

Prestige 2002 Series User’s Guide

Figure 39 Windows 95/98/Me: TCP/IP Properties: IP Address .............................. 79

Figure 40 Windows 95/98/Me: TCP/IP Properties: DNS Configuration ................. 80

Figure 41 Windows XP: Start Menu ....................................................................... 81

Figure 42 Windows XP: Control Panel ................................................................... 81

Figure 43 Windows XP: Control Panel: Network Connections: Properties ............ 82

Figure 44 Windows XP: Local Area Connection Properties ................................... 82

Figure 45 Windows XP: Advanced TCP/IP Settings .............................................. 83

Figure 46 Windows XP: Internet Protocol (TCP/IP) Properties .............................. 84

Figure 47 Macintosh OS 8/9: Apple Menu ............................................................. 85

Figure 48 Macintosh OS 8/9: TCP/IP ..................................................................... 86

Figure 49 Macintosh OS X: Apple Menu ................................................................ 87

Figure 50 Macintosh OS X: Network ...................................................................... 87

Figure 51 Single-Computer per Device Hardware Configuration ........................... 98

Figure 52 Prestige as a PPPoE Client ................................................................... 98

12 List of Figures

Prestige 2002 Series User’s Guide

List of Tables

Table 1 Web Configurator Screens Summary ....................................................... 26

Table 2 Common Screen Command Buttons ........................................................ 27

Table 3 System General ........................................................................................ 30

Table 4 Password .................................................................................................. 31

Table 5 Pre-defined NTP Time Servers ................................................................. 31

Table 6 Time Setting .............................................................................................. 32

Table 7 ETHERNET .............................................................................................. 37

Table 8 ETHERNET Mgnt Port .............................................................................. 38

Table 9 SIP Call Progression ................................................................................ 40

Table 10 VoIP ........................................................................................................ 48

Table 11 VoIP Advanced ....................................................................................... 49

Table 12 QoS ........................................................................................................ 52

Table 13 Phone Port .............................................................................................. 54

Table 14 Phone Book ............................................................................................ 56

Table 15 Lifeline .................................................................................................... 57

Table 16 View Log ................................................................................................. 59

Table 17 System Error Logs .................................................................................. 60

Table 18 System Maintenance Logs ..................................................................... 60

Table 19 SIP Logs ................................................................................................. 61

Table 20 RTP Logs ................................................................................................ 61

Table 21 FSM Logs: Caller Side ............................................................................ 62

Table 22 FSM Logs: Callee Side ........................................................................... 62

Table 23 Lifeline Logs ........................................................................................... 62

Table 24 System Status ......................................................................................... 64

Table 25 Firmware Upload .................................................................................... 65

Table 26 Restore Configuration ............................................................................. 67

Table 27 Troubleshooting the Start-Up of Your Prestige ....................................... 71

Table 28 Troubleshooting the LAN or PC LED ...................................................... 71

Table 29 Troubleshooting the LAN Interface ......................................................... 72

Table 30 Troubleshooting Internet Access ............................................................ 72

Table 31 Troubleshooting the Password ............................................................... 72

Table 32 Troubleshooting the Web Configurator ................................................... 73

Table 33 Troubleshooting Telephone .................................................................... 73

Table 34 Troubleshooting Voice Service ............................................................... 74

Table 35 Prestige 2002 Power Adaptor Specifications ......................................... 75

Table 36 Prestige 2002L Power Adaptor Specifications ....................................... 76

Table 37 Classes of IP Addresses ........................................................................ 89

Table 38 Allowed IP Address Range By Class ...................................................... 90

List of Tables 13

Prestige 2002 Series User’s Guide

Table 39 “Natural” Masks ..................................................................................... 90

Table 40 Alternative Subnet Mask Notation .......................................................... 91

Table 41 Two Subnets Example ............................................................................ 91

Table 42 Subnet 1 ................................................................................................. 92

Table 43 Subnet 2 ................................................................................................. 92

Table 44 Subnet 1 ................................................................................................. 93

Table 45 Subnet 2 ................................................................................................. 93

Table 46 Subnet 3 ................................................................................................. 93

Table 47 Subnet 4 ................................................................................................. 94

Table 48 Eight Subnets ......................................................................................... 94

Table 49 Class C Subnet Planning ........................................................................ 94

Table 50 Class B Subnet Planning ........................................................................ 95

14 List of Tables

Prestige 2002 Series User’s Guide

Preface

Congratulations on your purchase of the Prestige 2002 Series VoIP Analog Telephone
Adaptor.

Note: Register your product online to receive e-mail notices of firmware
upgrades and information at www.zyxel.com

www.us.zyxel.com

Your Prestige is easy to install and configure.

for North American products.

About This User's Guide

This manual is designed to guide you through the configuration of your Prestige for its various
applications and provide background information on the Prestige’s features.

Note: You may use the web configurator to configure your Prestige.

for global products, or at

Related Documentation

• Supporting Disk

Refer to the included CD for support documents.

• Quick Start Guide

The Quick Start Guide is designed to help you get up and running right away. It contains
a detailed easy-to-follow connection diagram, default settings, handy checklists and
information on setting up your network and configuring for Internet access.

• Web Configurator Online Help

Embedded web help for descriptions of individual screens and supplementary
information.

• ZyXEL Glossary and Web Site

Please refer to www.zyxel.com
support documentation.

for an online glossary of networking terms and additional

User Guide Feedback

Help us help you. E-mail all User Guide-related comments, questions or suggestions for
improvement to [e-mail] or send regular mail to The Technical Writing
Team, ZyXEL Communications Corp., 6 Innovation Road II, Science-Based Industrial Park,
Hsinchu, 300, Taiwan. Thank you.

Preface 15

Prestige 2002 Series User’s Guide

Syntax Conventions

• “Enter” means for you to type one or more characters. “Select” or “Choose” means for
you to use one predefined choices.

• Mouse action sequences are denoted using a comma. For example, “click the Apple icon,
Control Panels and then Modem” means first click the Apple icon, then point your
mouse pointer to Control Panels and then click Modem.

• For brevity’s sake, we will use “e.g.,” as a shorthand for “for instance”, and “i.e.,” for
“that is” or “in other words” throughout this manual.

• The Prestige 2002 series may be referred to as the Prestige or the device in this user’s
guide.

Graphics Icons Key

Prestige Computer Notebook computer

Server Switch Router

Telephone

16 Preface

Prestige 2002 Series User’s Guide

CHAPTER 1

Introducing the Prestige

This chapter introduces the main features and applications of the Prestige.

1.1 Prestige 2002 VoIP Analog Telephone Adaptor Overview

The Prestige 2002 is a SIP-based VoIP analog telephone adaptor (ATA). Sending voice
signals over the Internet is called Voice over IP or VoIP. Session Initiated Protocol (SIP) is an
internationally recognized standard for implementing VoIP.

The Prestige allows you to use a traditional analog telephone to make and receive Voice over
IP calls. You can call any landline or mobile telephone as well as IP telephones. You don’t
need to know if the recipient’s connection type is an IP, cellular or landline based service.
Calls received from IP telephones work exactly as you would expect from the traditional
telephone service.

The Prestige’s two Ethernet ports allow you to connect the Prestige to your LAN and connect
your computer to the Prestige. This way your computer can still access the LAN without
adding an extra Ethernet switch.

The Prestige's web configurator allows easy management and configuration.

1.2 Prestige 2002L VoIP Analog Telephone Adaptor with Lifeline

The Prestige 2002L has all of the features of the Prestige 2002 and adds the PSTN (Public
Switched Telephone Network) lifeline feature. PSTN lifeline lets you have VoIP phone
service and PSTN phone service at the same time.

1.3 Features

Your Prestige is packed with a number of features that make it flexible and easy to use.

10/100Mbps Auto-negotiating Fast Ethernet Interfaces

The auto-negotiation feature allows the Prestige to detect the speed of incoming transmissions
and adjust appropriately without manual intervention. It allows data transfer of either 10 Mbps
or 100 Mbps in either half-duplex or full-duplex mode depending on your Ethernet network.

Auto-crossover 10/100 Mbps Ethernet Interfaces

The Ethernet interfaces automatically adjust to either a crossover or straight-through Ethernet
cable.

Chapter 1 Introducing the Prestige 17

Prestige 2002 Series User’s Guide

PSTN Lifeline

The Prestige 2002L has a LINE port for connecting a PSTN line. You can receive incoming
PSTN phone calls even while someone else connected to the Prestige is making VoIP phone
calls. You can dial a (prefix) number to make an outgoing PSTN call. You can still make
PSTN phone calls if the Prestige 2002L loses power.

REN

A Ringer Equivalence Number is used to determine the number of devices that may be
connected to the telephone line. The Prestige can support three devices per telephone port.

Dynamic Jitter Buffer

The Prestige has a built-in adaptive, buffer that helps to smooth out the variations in delay
(jitter) for voice traffic. This helps ensure good voice quality for your conversations.

Standards Compliance

The Prestige complies with the following standards.

• SIP version 2 (RFC 3261)

• SDP (RFC 2327)

• RTP (RFC 1889)

• RTCP (RFC 1890)

• SIP NAT Traversal (STUN) (RFC 3489)

Multiple SIP Accounts

The Prestige allows you to simultaneously use multiple voice (SIP) accounts and assign them
to one or both telephone ports.

STUN

Simple Traversal of User Datagram Protocol (UDP) through Network Address Translators
(STUN) allows SIP to pass through NAT routers.

Multiple Voice Channels

The Prestige can simultaneously handle multiple voice channels (telephone calls).
Additionally you can answer an incoming phone call on a VoIP account, even while someone
else is using the account for a phone call.

Voice Coding

The Prestige can use the following voice codecs (coder/decoders).

•G.711

•G.729

18 Chapter 1 Introducing the Prestige

Prestige 2002 Series User’s Guide

Voice Activity Detection/Silence Suppression

Voice Activity Detection (VAD) reduces the bandwidth that a call uses by not transmitting
“silent packets” when you are not speaking.

Comfort Noise Generation

When the Prestige uses VAD, it generates and sends comfort (background) noise when you are
not speaking.

Echo Cancellation

The Prestige supports G.168, an ITU-T standard for eliminating the echo caused by the sound
of your voice reverberating in the telephone receiver while you talk.

QoS (Quality of Service)

Quality of Service (QoS) mechanisms help to provide better service on a per-flow basis. The
Prestige supports Type of Service (ToS) and Differentiated Services (DiffServ). This allows
the Prestige to tag voice frames so they can be prioritized over the network.

Fax Tone Detection and Pass-through

The Prestige automatically detects fax messages and sends them over PCM G.711.

Auto-provisioning

Auto-provisioning automatically updates your Prestige’s configurable settings via a TFTP
server.

Firmware Upgrades

Use the web configurator to upload updated firmware to your Prestige.

Ease of Installation

Your Prestige is designed for quick, intuitive and easy installation. Physically, its compact size
and lightness make it easy to position anywhere in your busy office.

1.4 Applications

Here are some examples of how you can use your Prestige.

1.4.1 Make Calls via Internet Telephony Service Provider

In a home or small office environment, you can use the Prestige to make and receive VoIP
telephone calls through an Internet Telephony Service Provider (ITSP).

Chapter 1 Introducing the Prestige 19

Prestige 2002 Series User’s Guide

The following figure shows a basic example of how you would make a VoIP call through an
ITSP. You use your analog phone (A in the figure) and the Prestige (B) changes the call into
VoIP. The Prestige then sends your call through your modem or router (C) to the Internet and
the ITSP’s SIP server. The VoIP call server forwards calls to PSTN phones (F) through a
trunking gateway (E) to the PSTN network. The VoIP call server forwards calls to IP phones
(G) through the Internet.

Figure 1 Internet Telephony Service Provider Application

1.4.2 Make Calls via IP-PBX

If your company has an IP-PBX (Internet Protocol Private Branch Exchange), you can use the
Prestige to make and receive VoIP telephone calls through it.

In this example, you use your analog phone (A in the figure) and the Prestige (B) changes the
call into VoIP and sends it to the IP-PBX. The IP-PBX forwards calls to PSTN phones (C) to
the PSTN network. The IP-PBX forwards calls to IP phones (D) through an IP network (this
could include the Internet).

20 Chapter 1 Introducing the Prestige

Figure 2 IP-PBX Application

Prestige 2002 Series User’s Guide

Chapter 1 Introducing the Prestige 21

Prestige 2002 Series User’s Guide

22 Chapter 1 Introducing the Prestige

Introducing the Web

This chapter describes how to access the Prestige web configurator and provides an overview
of its screens.

2.1 Web Configurator Overview

The embedded web configurator allows you to manage the Prestige from anywhere through a
browser such as Microsoft Internet Explorer or Netscape Navigator. Use Internet Explorer 6.0
and later or Netscape Navigator 7.0 and later versions with JavaScript enabled.

It is recommended that you set your screen resolution to 1024 by 768 pixels.

Prestige 2002 Series User’s Guide

CHAPTER 2

Configurator

2.2 Accessing the Prestige Web Configurator

1 Make sure your Prestige hardware is properly connected and prepare your computer/

computer network to connect to the Prestige (refer to the Quick Start Guide).

2 Launch your web browser.

3 Enter the Prestige’s management IP address (default 192.168.5.1) or IP address. The

Prestige 2002 has a management IP address feature since by default the Prestige is set to
receive a dynamically assigned IP address and thus has no default IP address. Whether
you use the Prestige’s management IP address or its IP address (after it receives one),
make sure that your computer’s IP address is in the same subnet.

Figure 3 Web Configurator IP Address

4 Type "1234" (default) as the password and click Login. In some versions, the default

password appears automatically - if this is the case, click Login.

Chapter 2 Introducing the Web Configurator 23

Prestige 2002 Series User’s Guide

Figure 4 Enter Password

5 You should see a screen asking you to change your password (highly recommended) as

shown next. Type a new password (and retype it to confirm) and click Apply or click
Ignore.

Figure 5 Change Password

6 You should now see the web configurator MAIN MENU screen (see Figure 6).

Note: The Prestige automatically logs you out if the

management session is idle for five minutes. Simply log back in
if this happens to you.

24 Chapter 2 Introducing the Web Configurator

2.3 Resetting the Prestige

If you forget your password or cannot access the web configurator, you will need to reload the
factory-default configuration file or use the RESET button the back of the Prestige. Uploading
this configuration file replaces the current configuration file with the factory-default
configuration file. This means that you will lose all configurations that you had previously.
The password will also be reset to “1234”.

2.3.1 Procedure To Use The Reset Button

Make sure the PWR/VoIP LED is on (not blinking) before you begin this procedure.

1 Press the RESET button for five to ten seconds (release it when the PWR/VoIP LED

begins to blink). When the PWR/VoIP LED starts blinking, the defaults have been
restored and the Prestige restarts. Otherwise, go to step 2.

2 Disconnect and reconnect the Prestige’s power.

3 Wait for the PWR LED to stop blinking and stay on steady.

4 Press the RESET button for five to ten seconds (release it when the PWR/VoIP LED

begins to blink). When the PWR/VoIP LED starts blinking, the defaults have been
restored and the Prestige restarts. Otherwise, go to step 2.

Prestige 2002 Series User’s Guide

2.4 Navigating the Prestige Web Configurator

The following summarizes how to navigate the web configurator from the MAIN MENU
screen.

Note: Click the Help icon (located in the top right corner of most
screens) to view online help.

• Click a link under ADVANCED to configure Prestige features.

Chapter 2 Introducing the Web Configurator 25

Prestige 2002 Series User’s Guide

Figure 6 Web Configurator

The following table describes the sub-menus.

Table 1 Web Configurator Screens Summary

LINK TAB FUNCTION

SYSTEM General Use this screen to configure general system settings.

Password Use this screen to change your password.

Time Setting Use this screen to change your Prestige’s time and date.

ETHERNET Ethernet Use this screen to configure your Prestige’s Ethernet interface

MGNT Use this screen to configure your Prestige’s management IP

VOIP VoIP Use this screen to configure your Prestige’s Voice over IP settings.

QoS Use this screen to configure your Prestige’s Quality of Service

PHONE Phone Port Use this screen to configure your Prestige’s phone settings.

PHONE BOOK Speed Dial Use this screen to configure speed dial for SIP phone numbers that

Lifeline Use this screen to configure your Prestige’s settings for PSTN calls

LOGS View Log Use this screen to view the logs.

MAINTENANCE Status This screen contains administrative and system-related information.

F/W Upload Use this screen to upload firmware to your Prestige

Configuration Use this screen to backup and restore the configuration or reset the

Restart This screen allows you to reboot the Prestige without turning the

LOGOUT Click this label to exit the web configurator.

settings.

address.

settings.

you call often.

(Prestige 2002L only).

factory defaults to your Prestige.

power off.

26 Chapter 2 Introducing the Web Configurator

2.5 Common Screen Command Buttons

The following table shows common command buttons found on many web configurator
screens.

Table 2 Common Screen Command Buttons

Apply Click Apply to save your changes back to the Prestige.

Reset/Cancel Click Reset or Cancel to begin configuring this screen afresh.

Prestige 2002 Series User’s Guide

Chapter 2 Introducing the Web Configurator 27

Prestige 2002 Series User’s Guide

28 Chapter 2 Introducing the Web Configurator

This chapter provides information on the System screens.

3.1 System Overview

This chapter describes the SYSTEM screens.

3.2 General Setup

General Setup contains administrative and system-related information. System Name is for
identification purposes. However, because some ISPs check this name you should enter your
computer's "Computer Name".

• In Windows 95/98 click Start, Settings, Control Panel, Network. Click the

Identification tab, note the entry for the Computer Name field and enter it as the
System Name.

• In Windows 2000, click Start, Settings and Control Panel and then double-click
System. Click the Network Identification tab and then the Properties button. Note the

entry for the Computer name field and enter it as the System Name.

• In Windows XP, click Start, My Computer, View system information and then click
the Computer Name tab. Note the entry in the Full computer name field and enter it as
the Prestige System Name.

Prestige 2002 Series User’s Guide

CHAPTER 3

System Screens

3.2.1 Domain Name

The Domain Name entry is what is propagated to the DHCP clients on the LAN. If you leave
this blank, the domain name obtained by DHCP from the ISP is used. While you must enter
the host name (System Name) on each individual computer, the domain name can be assigned
from the Prestige via DHCP.

3.3 General Setup Configuration

Click SYSTEM in the navigation panel and then General Setup to display the following
screen.

Chapter 3 System Screens 29

Prestige 2002 Series User’s Guide

Figure 7 System General

Table 3 System General

LABEL DESCRIPTION

System Name This is for identification purposes. Enter your computer's "Computer Name".

Domain Name The Domain Name entry is what is propagated to the DHCP clients on the LAN. If

Administrator
Inactivity Timer

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

you leave this blank, the domain name obtained by DHCP from the ISP is used.

Type how many minutes a management session can be left idle before the session
times out. The default is 5 minutes. After it times out you have to log in with your
password again. Very long idle timeouts may have security risks. A value of "0"
means a management session never times out, no matter how long it has been left
idle (not recommended).

3.4 Configuring Password

To change your Prestige’s password (recommended), click SYSTEM in the navigation panel,
and then the Password tab. The screen appears as shown. This screen allows you to change
the Prestige’s password.

Figure 8 Password

The following table describes the labels in this screen.

30 Chapter 3 System Screens

Table 4 Password

LABEL DESCRIPTION

Old Password Type the default password or the existing password you use to access the

system in this field.

New Password Type the new password in this field.

Retype to Confirm Type the new password again in this field.

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

3.5 Pre-defined NTP Time Servers List

The Prestige uses the following pre-defined list of NTP time servers if you do not specify a
time server or it cannot synchronize with the time server you specified.

Note: The Prestige can use this pre-defined list of time servers regardless of
the Time Protocol you select.

Prestige 2002 Series User’s Guide

When the Prestige uses the pre-defined list of NTP time servers, it randomly selects one server
and tries to synchronize with it. If the synchronization fails, then the Prestige goes through the
rest of the list in order from the first one tried until either it is successful or all the pre-defined
NTP time servers have been tried.

Table 5 Pre-defined NTP Time Servers

ntp1.cs.wisc.edu

ntp1.gbg.netnod.se

ntp2.cs.wisc.edu

tock.usno.navy.mil

ntp3.cs.wisc.edu

ntp.cs.strath.ac.uk

ntp1.sp.se

time1.stupi.se

tick.stdtime.gov.tw

tock.stdtime.gov.tw

time.stdtime.gov.tw

Chapter 3 System Screens 31

Prestige 2002 Series User’s Guide

3.6 Configuring Time Setting

To change your Prestige’s time and date, click SYSTEM in the navigation panel, then the
Time Setting tab. The screen appears as shown. Use this screen to configure the Prestige’s

time based on your local time zone.

Figure 9 Time Setting

The following table describes the labels in this screen.

Table 6 Time Setting

LABEL DESCRIPTION

Time Protocol Select the time service protocol that your time server sends when you turn on the

Prestige. Not all time servers support all protocols, so you may have to check with
your ISP/network administrator or use trial and error to find a protocol that works.

The main difference between them is the format.

Daytime (RFC 867) format is day/month/year/time zone of the server.
Time (RFC 868) format displays a 4-byte integer giving the total number of

seconds since 1970/1/1 at 0:0:0.
The default, NTP (RFC 1305), is similar to Time (RFC 868).
Select None to enter the time and date manually.

Time Server
Address

Current Time This field displays the time of your Prestige.

New Time This field displays the last updated time from the time server.

Enter the IP address or URL of your time server. Check with your ISP or network
administrator if you are unsure of this information.

Each time you reload this page, the Prestige synchronizes the time with the time
server.

When you select None in the Time Protocol field, enter the new time in this field
and then click Apply.

32 Chapter 3 System Screens

Prestige 2002 Series User’s Guide

Table 6 Time Setting (continued)

LABEL DESCRIPTION

Current Date This field displays the date of your Prestige.

Each time you reload this page, the Prestige synchronizes the time with the time
server.

New Date This field displays the last updated date from the time server.

When you select None in the Time Protocol field, enter the new date in this field
and then click Apply.

Time Zone Choose the Time Zone of your location. This will set the time difference between

your time zone and Greenwich Mean Time (GMT).

Daylight Savings Select this option if you use daylight savings time. Daylight saving is a period from

Start Date Enter the month and day that your daylight-savings time starts on if you selected

End Date Enter the month and day that your daylight-savings time ends on if you selected

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

late spring to early fall when many countries set their clocks ahead of normal local
time by one hour to give more daytime light in the evening.

Daylight Savings.

Daylight Savings.

Chapter 3 System Screens 33

Prestige 2002 Series User’s Guide

34 Chapter 3 System Screens

Ethernet Screens

This chapter describes how to configure the Prestige’s Ethernet and management IP addresses
settings.

4.1 ETHERNET Overview

The Prestige has two Ethernet ports. Connect the LAN Ethernet port to a cable/DSL modem or
router or an Ethernet LAN switch, which in turn connects you to the Internet or your
company’s IP-PBX. Connect the PC Ethernet port to your computer. The Prestige bridges
network traffic between the two Ethernet ports so your computer can still access the Internet or
the company LAN. Both Ethernet ports use the same IP address and subnet mask.

4.1.1 IP Address and Subnet Mask

Prestige 2002 Series User’s Guide

CHAPTER 4

Similar to the way houses on a street share a common street name, so too do computers on a
LAN share one common network number.

Where you obtain your network number depends on your particular situation. If the ISP or
your network administrator assigns you a block of registered IP addresses, follow their
instructions in selecting the IP addresses and the subnet mask.

If the ISP did not explicitly give you an IP network number, then the ISP should assign you a
dynamic IP address when the connection is established.

Once you have decided on the network number, pick an IP address that is easy to remember,
for instance, 192.168.1.20, for your Prestige, but make sure that no other device on your
network is using that IP address.

The subnet mask specifies the network number portion of an IP address.

4.1.2 DNS Server Address Assignment

Use DNS (Domain Name System) to map a domain name to its corresponding IP address and
vice versa, for instance, the IP address of www.zyxel.com is 204.217.0.2. The DNS server is
extremely important because without it, you must know the IP address of a computer before
you can access it.

The Prestige can get the DNS server addresses in the following ways.

• The ISP tells you the DNS server addresses, usually in the form of an information sheet,
when you sign up. If your ISP gives you DNS server addresses, enter them in the DNS
Server fields.

• If the ISP did not give you DNS server information, leave the DNS Server fields set to

0.0.0.0 for the ISP to dynamically assign the DNS server IP addresses.

Chapter 4 Ethernet Screens 35

Prestige 2002 Series User’s Guide

4.1.3 PPPoE Encapsulation

Point-to-Point Protocol over Ethernet (PPPoE) functions as a dial-up connection. PPPoE is an
IETF (Internet Engineering Task Force) draft standard specifying how a host personal
computer interacts with a broadband modem (for example DSL, cable, wireless, etc.) to
achieve access to high-speed data networks. It preserves the existing Microsoft Dial-Up
Networking experience and requires no new learning or procedures.

For the service provider, PPPoE offers an access and authentication method that works with
existing access control systems (for instance, Radius). For the user, PPPoE provides a login
and authentication method that the existing Microsoft Dial-Up Networking software can
activate, and therefore requires no new learning or procedures for Windows users.

One of the benefits of PPPoE is the ability to let end users access one of multiple network
services, a function known as dynamic service selection. This enables the service provider to
easily create and offer new IP services for specific users.

Operationally, PPPoE saves significant effort for both the subscriber and the ISP/carrier, as it
requires no specific configuration of the broadband modem at the subscriber’s site.

For more information on PPPoE, see Appendix D .

4.2 Configuring Ethernet

Click ETHERNET in the navigation panel to display the ETHERNET screen. Use the
ETHERNET Ethernet screen to configure the Prestige’s Ethernet interfaces with Internet

account information from your ISP. Your ISP may have already configured some of the fields
for you.

You can manage the Prestige through the Ethernet IP address, but you may not always know
the Prestige’s IP address (especially if the IP address is dynamic). Use the Mgnt Port screen

see Figure 11) to configure a static IP address that you use to access the Prestige for

management.

36 Chapter 4 Ethernet Screens

Figure 10 ETHERNET

Prestige 2002 Series User’s Guide

Table 7 ETHERNET

LABEL DESCRIPTION

Get IP Address Automatically Select this option if you have a dynamic IP address.

Use Fixed IP Address Select this option if the ISP assigned you a static IP address.

IP Address Type the (static) IP address assigned to you by your ISP.

Subnet Mask Type the subnet mask assigned to you by your ISP (if given).

Default Gateway Enter the gateway IP address assigned to you by your ISP (if given).

Primary/Secondary DNS DNS (Domain Name System) is for mapping a domain name to its

Use PPPoE Client Select Use PPPoE Client if your ISP provides a PPPoE user name

PPPoE User Name Enter the user name exactly as your ISP assigned it.

Password Enter the password exactly as your ISP assigned it.

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

corresponding IP address and vice versa. The DNS servers are
extremely important because without them, you must know the IP
address of a computer before you can access it. Specify the DNS
servers.

and password.

Chapter 4 Ethernet Screens 37

Prestige 2002 Series User’s Guide

4.3 Configuring the Ethernet Management Port

Click ETHERNET in the navigation panel and then Mgnt Port to open the following screen.
Use the ETHERNET Mgnt Port screen to configure a static IP address through which you
can manage the Prestige.

Note: The management port is a separate logical Ethernet
interface that you can access from a computer connected to
either of the Prestige’s physical Ethernet interfaces.

Figure 11 ETHERNET Mgnt Port

The following table describes the labels in this screen.

Note: The management port’s subnet mask is fixed at

255.255.255.0.

Table 8 ETHERNET Mgnt Port

LABEL DESCRIPTION

IP Address Type the (static) IP address through which to manage the Prestige. This

management IP address can be on a different subnet from the Ethernet port’s IP
address, but the computer you use for management must be on the same subnet
as this management IP address.

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

38 Chapter 4 Ethernet Screens

This chapter provides background information on VoIP and SIP.

5.1 Introduction to VoIP

VoIP is the sending of voice signals over the Internet Protocol. This allows you to make phone
calls and send faxes over the Internet at a fraction of the cost of using the traditional circuit­switched telephone network. You can also use servers to run telephone service applications
like PBX services and voice mail. Internet Telephony Service Provider (ITSP) companies
provide VoIP service. A company could alternatively set up an IP-PBX and provide it’s own
VoIP service.

Circuit-switched telephone networks require 64 kilobits per second (kbps) in each direction to
handle a telephone call. VoIP can use advanced voice coding techniques with compression to
reduce the required bandwidth.

Prestige 2002 Series User’s Guide

CHAPTER 5

Introduction to VoIP

5.2 Introduction to SIP

The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol that
handles the setting up, altering and tearing down of voice and multimedia sessions over the
Internet.

SIP signaling is separate from the media for which it handles sessions. The media that is
exchanged during the session can use a different path from that of the signaling. SIP handles
telephone calls and can interface with traditional circuit-switched telephone networks.

5.2.1 SIP Identities

A SIP account uses an identity (sometimes referred to as a SIP address). A complete SIP
identity is called a SIP URI (Uniform Resource Identifier). A SIP account's URI identifies the
SIP account in a way similar to the way an e-mail address identifies an e-mail account. The
format of a SIP identity is SIP-Number@SIP-Service-Domain.

5.2.1.1 SIP Number

The SIP number is the part of the SIP URI that comes before the “@” symbol. A SIP number
can use letters like in an e-mail address ([e-mail] for example) or numbers
like a telephone number ([e-mail] for example).

5.2.1.2 SIP Service Domain

The SIP service domain of the VoIP service provider is the domain name in a SIP URI. For
example, if the SIP address is [e-mail]
the SIP service domain.

Chapter 5 Introduction to VoIP 39

, then “VoIP-provider.com” is

Prestige 2002 Series User’s Guide

5.2.2 SIP Call Progression

The following figure displays the basic steps in the setup and tear down of a SIP call. A calls
B.

Table 9 SIP Call Progression

A B

1. INVITE

4. ACK

5.Dialogue (voice traffic)

6. BYE

1 A sends a SIP INVITE request to B. This message is an invitation for B to participate in a

SIP telephone call.

2. Ringing

3. OK

7. OK

2 B sends a response indicating that the telephone is ringing.

3 B sends an OK response after the call is answered.

4 A then sends an ACK message to acknowledge that B has answered the call.

5 Now A and B exchange voice media (talk).

6 After talking, A hangs up and sends a BYE request.

7 B replies with an OK response confirming receipt of the BYE request and the call is

terminated.

5.2.3 SIP Servers

SIP is a client-server protocol. A SIP client is an application program or device that sends SIP
requests. A SIP server responds to the SIP requests.

When you use SIP to make a VoIP call, it originates at a client and terminates at a server. A
SIP client could be a computer or a SIP phone. One device can act as both a SIP client and a
SIP server.

5.2.3.1 SIP User Agent Server

A SIP user agent server can make and receive VoIP telephone calls. This means that SIP can
be used for peer-to-peer communications even though it is a client-server protocol. In the
following figure, either A or B can act as a SIP user agent client to initiate a call. A and B can
also both act as a SIP user agent server to receive the call.

40 Chapter 5 Introduction to VoIP

Figure 12 SIP User Agent Server

5.2.3.2 SIP Proxy Server

A SIP proxy server receives requests from clients and forwards them to another server.

In the following example, you want to use client device A to call someone who is using client
device C.

1 The client device (A in the figure) sends a call invitation to the SIP proxy server (B).

2 The SIP proxy server forwards the call invitation to C.

Figure 13 SIP Proxy Server

Prestige 2002 Series User’s Guide

5.2.3.3 SIP Redirect Server

A SIP redirect server accepts SIP requests, translates the destination address to an IP address
and sends the translated IP address back to the device that sent the request. Then the client
device that originally sent the request can send requests to the IP address that it received back
from the redirect server. Redirect servers do not initiate SIP requests.

In the following example, you want to use client device A to call someone who is using client
device C.

1 Client device A sends a call invitation for C to the SIP redirect server (B).

2 The SIP redirect server sends the invitation back to A with C’s IP address (or domain

name).

3 Client device A then sends the call invitation to client device C.

Chapter 5 Introduction to VoIP 41

Prestige 2002 Series User’s Guide

Figure 14 SIP Redirect Server

5.2.3.4 SIP Register Server

A SIP register server maintains a database of SIP identity-to-IP address (or domain name)
mapping. The register server checks your user name and password when you register.

5.2.4 RTP

When you make a VoIP call using SIP, the RTP (Real time Transport Protocol) is used to
handle voice data transfer. See RFC 1889 for details on RTP.

5.3 STUN

STUN (Simple Traversal of User Datagram Protocol (UDP) through Network Address
Translators) allows the Prestige to find the presence and types of NAT routers and/or firewalls
between it and the public Internet. STUN also allows the Prestige to find the public IP address
that NAT assigned, so the Prestige can embed it in the SIP data stream. See RFC 3489 for
details on STUN.

5.3.1 NAT

NAT routers are commonly used to translate private (or internal) IP addresses in packet
headers to public (or external) IP addresses and vice versa. NAT A NAT router maps a private
IP address and port pair to a public IP address and port, and whenever the NAT router receives
a packet with that public IP address and port, it knows how to reroute the packet back to the
private IP address and port. The figures in this section use lower-case letters (like a.b.c.d for
example) to represent public IP addresses. In the following figure, NAT maps the same IP
address to both A and B, but uses separate ports.

42 Chapter 5 Introduction to VoIP

Prestige 2002 Series User’s Guide

Figure 15 NAT

NAT does not translate IP addresses that are imbedded in the data stream. In order to make
VoIP calls, the Prestige must register its public IP address with a SIP register server. The SIP
register server gets the Prestige’s IP address from inside the SIP data stream and maps it to
your SIP identity. If there is a NAT router between the Prestige and the SIP register server, the
Prestige probably has a private IP address and it will be embedded in the data stream.

5.3.2 NAT Types

There are four types of NAT:

• Full Cone

• Restricted Cone

• Port Restricted Cone

• Symmetric

The first three NAT types use mapping for a private IP address that is independent of the
destination address. Symmetric NAT allocates a new mapping for each different destination IP
address. STUN does not work with symmetric NAT routers (see “Symmetric NAT”) or
firewalls.

5.3.2.1 Full Cone NAT

In full cone NAT, all requests from the same private IP address and port are mapped to the
same public IP address and port. Someone on the Internet only needs to know the mapping
scheme in order to send packets to a device behind the NAT router. See the following figure.
Computer A is behind a NAT router and has a private IP address of 10.0.0.3 and is sending and
receiving packets on port 80. It is mapped to the public IP address a.b.c.d and port 30080.
Anyone on the Internet (B and C in this example) can send packets to IP address a.b.c.d and
port 30080 and the NAT router will send them to computer A (at IP address 10.0.0.3 port 80).

Chapter 5 Introduction to VoIP 43

Prestige 2002 Series User’s Guide

Figure 16 Full Cone NAT

5.3.2.2 Restricted Cone NAT

Restricted cone NAT maps all requests from the same private IP address and port to the same
public IP address and port. In contrast to full cone NAT, a host on the Internet can only send a
packet to the private IP address and port if the private IP address and port has previously sent a
packet to that host. In the following figure, if A has sent a packet to B, then B can send packets
to A and B’s source port can vary. C cannot send packets to A because A never sent a packet
to C.

Figure 17 Restricted Cone NAT

5.3.2.3 Port Restricted Cone NAT

Port restricted cone NAT is like a restricted cone NAT, but port numbers are included in the
restriction. In the following figure, B can send packets, with source IP address e.f.g.h and port
20202 to A because A previously sent a packet to IP address e.f.g.h and port 20202. B cannot
send packets, with source IP address e.f.g.h and port 10101 to A because A has not sent a
packet to IP address e.f.g.h and port 10101.

44 Chapter 5 Introduction to VoIP

Figure 18 Port Restricted Cone NAT

5.3.2.4 Symmetric NAT

Symmetric NAT is different from the cone NAT types in that a specific NAT mapping of a
private IP address and port to a public IP address and port depends on the packet’s destination
IP address. In the following figure, if A sends a packet from IP address 10.0.0.3 and port 80 to
B, it may be mapped as IP address a.b.c.d and port 45678, but if A sends from the same IP
address and port to a different IP address, it is mapped differently (IP address a.b.c.d and port

12345).

Prestige 2002 Series User’s Guide

Figure 19 Symmetric NAT

Computer B can only respond to its mapping (IP address a.b.c.d and port 45678) and computer
C can only respond to its mapping (IP address a.b.c.d and port 12345). If either computer B or
C tries to send to the other’s mapped IP address and port, the NAT router will drop the
packets. Like restricted cone NAT, a host on the Internet can only send a packet to the private
IP address and port if the private IP address and port has previously sent a packet to that host.

Chapter 5 Introduction to VoIP 45

Prestige 2002 Series User’s Guide

5.4 SIP ALG

Some NAT routers may include a SIP Application Layer Gateway (ALG). A SIP ALG allows
VoIP calls to pass through NAT by examining and translating IP addresses embedded in the
data stream. When the Prestige registers with the SIP register server, the SIP ALG translates
the Prestige’s private IP address inside the SIP data stream to a public IP address. You do not
need to use STUN if your Prestige is behind a SIP ALG.

5.5 Pulse Code Modulation

Pulse Code Modulation (PCM) measures analog signal amplitudes at regular time intervals
and converts them into bits.

5.6 Voice Coding

A codec (coder/decoder) codes analog voice signals into digital signals and decodes the digital
signals back into voice signals. The Prestige supports the following codecs.

5.6.1 G.711

G.711 is a Pulse Code Modulation (PCM) waveform codec. G.711 provides very good sound
quality but requires 64kbps of bandwidth.

5.6.2 G.729

G.729 is an Analysis-by-Synthesis (AbS) hybrid waveform codec that uses a filter based on
information about how the human vocal tract produces sounds. G.729 provides good sound
quality and reduces the required bandwidth to 8kbps.

5.7 PSTN Call Setup Signaling

Dual-Tone MultiFrequency (DTMF) signaling uses pairs of frequencies (one lower frequency
and one higher frequency) to set up calls. It is also known as Touch Tone®. Each of the keys
on a DTMF telephone corresponds to a different pair of frequencies.

Pulse dialing sends a series of clicks to the local phone office in order to dial numbers.

1

1. The Prestige does not support pulse dialing at the time of writing.

46 Chapter 5 Introduction to VoIP

This chapter describes how to configure advanced VoIP and QoS settings.

6.1 VoIP Introduction

VoIP is the sending of voice signals over the Internet Protocol. This chapter covers the
configuration of the Vo IP screens.

6.2 VoIP Configuration

Click VoIP in the navigation panel to display the following screen. Use this screen to
configure the Prestige’s VoIP settings. You should have a voice account already set up and
have VoIP information from your VoIP service provider.

Prestige 2002 Series User’s Guide

CHAPTER 6

VoIP Screens

Figure 20 VoIP

Chapter 6 VoIP Screens 47

Prestige 2002 Series User’s Guide

Table 10 VoIP

LABEL DESCRIPTION

SIP Account You can configure the Prestige to use multiple SIP accounts. Select one to configure

its settings on the Prestige.

Active Select this check box to have the Prestige use this SIP account. Clear the check box

to have the Prestige not use this SIP account.

SIP Number Enter your SIP number in this field (use the number or text that comes before the @

symbol in a full SIP URI). You can use up to 127 ASCII characters.

SIP Local Port Use this field to configure the Prestige’s listening port for SIP. Leave this field set to

SIP Server
Address

SIP Server Port Enter the SIP server’s listening port for SIP in this field. Leave this field set to the

REGISTER
Server Address

REGISTER
Server Port

SIP Service
Domain

Authentication
User ID

Authentication
Password

Block Caller ID Select this check box to not show identification information when you make VoIP

Incoming Call
apply to

Advanced
Settings

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

the default if you were not given a local port number for SIP.

Type the IP address of the SIP server in this field. It doesn’t matter whether the SIP
server is a proxy, redirect or register server.

default if your VoIP service provider did not give you a server port number for SIP.

Enter the SIP register server’s address in this field.

If you were not given a register server address, then enter the address from the

Enter the SIP register server’s listening port for SIP in this field.

If you were not given a register server port, then enter the port from the SIP

Enter the SIP service domain name in this field (the domain name that comes after
the @ symbol in a full SIP URI). You can use up to 127 ASCII Extended set
characters.

This is the user name for registering this SIP account with the SIP register server.
Type the user name exactly as it was given to you. You can use up to 95 ASCII
characters.

Type the password associated with the user name above. You can use up to 95
ASCII Extended set characters.

phone calls. Clear the check box to show identification information when you make
VoIP phone calls.

Phone 1 and Phone 2 correspond to the Prestige’s physical PHONE 1 and 2 ports,
respectively. Select whether you want to receive calls for this SIP account on Phone
1, Phone 2 or both. If you select both, you will not know which SIP account a call is
coming in on.

Click Settings to open a screen where you can configure the Prestige’s advanced
VoIP settings like SIP server settings, the RTP port range and the coding type.

SIP Server Address field again here.

Server Port field again here.

6.3 Advanced VoIP Settings Configuration

Click VoIP in the navigation panel, select a SIP account and then click Settings to display the
following screen.

48 Chapter 6 VoIP Screens

Figure 21 VoIP Advanced

Prestige 2002 Series User’s Guide

The following table describes the labels in this screen.

Table 11 VoIP Advanced

LABEL DESCRIPTION

Advanced VoIP
Settings

SIP Server
Settings

URL Type Select SIP to have the Prestige include the domain name with the SIP number in

Expiration
Duration

Register Resend
Timer

Session Expires Use this field to set the longest time that the Prestige will allow a SIP session to

This read-only field displays the number of the SIP account that you are
configuring. The changes that you save in this page affect the Prestige’s settings
with the SIP account displayed here.

the SIP messages that it sends.Select TEL to have the Prestige use the SIP
number without a domain name in the SIP messages that it sends.

This field sets how long an entry remains registered with the SIP register server.
After this time period expires, the SIP register server deletes the Prestige’s entry
from the database of registered SIP numbers. The register server can use a
different time period. The Prestige sends another registration request after half of
this configured time period has expired.

Use this field to set how long the Prestige waits before sending a repeat
registration request if a registration attempt fails or there is no response from the
registration server.

remain idle (without traffic) before dropping it.

Chapter 6 VoIP Screens 49

Prestige 2002 Series User’s Guide

Table 11 VoIP Advanced (continued)

LABEL DESCRIPTION

Min-SE When two SIP devices negotiate a SIP session, they must negotiate a common

expiration time for idle SIP sessions. This field sets the shortest expiration time that
the Prestige will accept. The Prestige checks the session expiration values of
incoming SIP INVITE requests against the minimum session expiration value that
you configure here. If the session expiration of an incoming INVITE request is less
than the value you configure here, the Prestige negotiates with the other SIP
device to increase the session expiration value to match the Prestige’s minimum
session expiration value.

RTP Port Range Real time Transport Protocol is used to handle voice data transfer. Use this field to

Preferred
Compression
Type

STUN

Active Select this check box to turn on STUN. Use STUN if there is a NAT router between

Server Address Your VoIP service provider must host a STUN server in order for you to use STUN.

Server Port Enter the STUN server’s listening port for STUN requests in this field. Leave this

DTMF Mode The Dual Tone Multi-Frequency (DTMF) mode sets how the Prestige handles the

Back Click Back to return to the VoIP screen without saving configuration changes.

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

configure the Prestige’s listening port range for RTP traffic. Leave these fields set
to the defaults if you were not given a range of RTP ports to use.

Use this field to select the type of voice coder/decoder (codec) that you want the
Prestige to use. G.711 provides higher voice quality than G.729 but requires
64kbps of bandwidth while G.729 only requires 8kbps.

Select G.711>G.729 if you want the Prestige to first attempt to use the G.711
codec and then the G.729 codec if the peer is not set up to use G.711.

Select G.711 only if you want the Prestige to only use the G.711 codec when
making VoIP calls. You will not be able to connect to a peer that is not set up to use
G.711.

Select G.729>G.711 if you want the Prestige to first attempt to use the G.729
codec and then the G.711 codec if the peer is not set up to use G.729.

Select G.729 only if you want the Prestige to only use the G.729 codec when
making VoIP calls. You will not be able to connect to a peer that is not set up to use
G.729.

the Prestige and the VoIP service provider’s SIP server.
You do not need to use STUN if the NAT router is also a SIP ALG.

Type the IP address of the STUN server in this field.

field set to the default if your VoIP service provider did not give you a server port
number for STUN.

tones that your telephone makes when you push its buttons. It is recommended
that you use the same mode that your VoIP service provider uses.

Select RFC 2833 to send the DTMF tones in RTP packets.
Select PCM (Pulse Code Modulation) to include the DTMF tones in the voice data

stream. This method works best when you are using a codec that does not use
compression (like G.711). Codecs that use compression (like G.729) could distort
the tones.

Select SIP INFO to send the DTMF tones in SIP messages.

50 Chapter 6 VoIP Screens

6.4 Quality of Service (QoS)

Quality of Service (QoS) refers to both a network's ability to deliver data with minimum delay,
and the networking methods used to provide bandwidth for real-time multimedia applications.

6.4.1 Type Of Service (ToS)

Network traffic can be classified by setting the ToS (Type Of Service) values at the data
source (for example, at the Prestige) so a server can decide the best method of delivery, that is
the least cost, fastest route and so on.

6.4.2 DiffServ

DiffServ is a class of service (CoS) model that marks packets so that they receive specific per­hop treatment at DiffServ-compliant network devices along the route based on the application
types and traffic flow. Packets are marked with DiffServ Code Points (DSCPs) indicating the
level of service desired. This allows the intermediary DiffServ-compliant network devices to
handle the packets differently depending on the code points without the need to negotiate
paths or remember state information for every flow. In addition, applications do not have to
request a particular service or give advanced notice of where the traffic is going.

Prestige 2002 Series User’s Guide

1

6.4.2.1 DSCP and Per-Hop Behavior

DiffServ defines a new DS (Differentiated Services) field to replace the Type of Service
(TOS) field in the IP header. The DS field contains a 2-bit unused field and a 6-bit DSCP field
which can define up to 64 service levels. The following figure illustrates the DS field.

DSCP is backward compatible with the three precedence bits in the ToS octet so that non­DiffServ compliant, ToS-enabled network device will not conflict with the DSCP mapping.

Figure 22 DiffServ: Differentiated Service Field

DSCP
(6-bit)

Unused

(2-bit)

The DSCP value determines the forwarding behavior, the PHB (Per-Hop Behavior), that each
packet gets across the DiffServ network. Based on the marking rule, different kinds of traffic
can be marked for different priorities of forwarding. Resources can then be allocated
according to the DSCP values and the configured policies.

6.4.3 VLAN

Virtual Local Area Network (VLAN) allows a physical network to be partitioned into multiple
logical networks. Only stations within the same group can communicate with each other.

1. The Prestige does not support DiffServ at the time of writing.

Chapter 6 VoIP Screens 51

Prestige 2002 Series User’s Guide

Your Prestige can add IEEE 802.1Q VLAN ID tags to voice frames that it sends to the
network. This allows the Prestige to communicate with a SIP server that is a member of the
same VLAN group. Some ISPs use the VLAN tag to identify voice traffic and give it priority
over other traffic.

6.5 QoS Configuration

Click VoIP in the navigation panel and then QoS to display the following screen.

Figure 23 QoS

The following table describes the labels in this screen.

Table 12 QoS

LABEL DESCRIPTION

SIP TOS Priority Type a priority for voice transmissions. The Prestige applies Type of Service

RTP TOS Priority Type a priority for voice transmissions. The Prestige applies Type of Service

Enable VLAN Tag Enable VLAN tagging if the Prestige needs to be a member of a VLAN group in

Voice VLAN ID Type the VLAN ID (VID) from 0 to 4095 for the Prestige to add to voice Ethernet

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

priority tags with this priority to voice traffic that it transmits. Priorities 6 and 7 are
reserved for network control traffic. It is recommended that you use priority 5 for
SIP.

priority tags with this priority to RTP traffic that it transmits. Priorities 6 and 7 are
reserved for network control traffic. It is recommended that you use priority 5 for
RTP.

order to communicate with the SIP server. Your LAN and gateway must also be set
up to use VLAN tags. Some switches also give priority to voice traffic based on its
VLAN tag.

Disable VLAN tagging if the Prestige does not need to be a member of a VLAN
group to communicate with the SIP server.

frames that it sends out to the network.

52 Chapter 6 VoIP Screens

Prestige 2002 Series User’s Guide

CHAPTER 7

This chapter covers how to adjust the Prestige’s phone settings.

7.1 Phone Introduction

You can configure the volume, echo cancellation and VAD settings for each individual phone
port on the Prestige. You can also select which SIP account to use for making outgoing calls.

7.1.1 Voice Activity Detection/Silence Suppression

Voice Activity Detection (VAD) detects whether or not speech is present. This lets the
Prestige reduce the bandwidth that a call uses by not transmitting “silent packets” when you
are not speaking.

Phone

7.1.2 Comfort Noise Generation

When using VAD, the Prestige generates and sends comfort noise when you are not speaking.
Comfort noise uses the lowest possible transmission bandwidth to match the background
noise. The comfort noise lets the person at the other end of the connection know that the line is
still connected (total silence would easily be mistaken for a lost connection).

7.1.3 Echo Cancellation

G.168 is an ITU-T standard for eliminating the echo caused by the sound of your voice
reverberating in the telephone receiver while you talk.

7.2 Phone Port Configuration

Click PHONE in the navigation panel to display the following screen.

Chapter 7 Phone 53

Prestige 2002 Series User’s Guide

Figure 24 Phone Port

The following table describes the labels in this screen.

Table 13 Phone Port

LABEL DESCRIPTION

Phone Port Settings Use this field to select the phone port that you want to configure.

Speaking Volume Use this field to set the loudness that the Prestige uses for the speech signal that

it sends to the peer device. -1 is the quietest and 1 is the loudest.

Listening Volume Use this field to set the loudness that the Prestige uses for the speech signal that

Outgoing Call use SIP 1 and SIP 2 correspond to the Prestige’s SIP accounts. Select whether you

G.168 Active Select this check box to cancel the echo caused by the sound of your voice

VAD Support Select this check box to use Voice Activity Detection (VAD) to reduce the

Dialing Interval When you are dialing a telephone number the Prestige waits this long after you

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

it receives from the peer device and sends to your phone. -1 is the quietest and
1 is the loudest.

want the phone(s) attached to this phone port to use SIP account 1, 2 or both
when you make a call. If you select both SIP accounts, the Prestige will first try
to use SIP account 2 and then SIP account 1 when you make a call.

reverberating in the telephone receiver while you talk.

bandwidth that a call uses. The Prestige will generate and send comfort noise
when you are not talking.

stop pressing the buttons before initiating the call. Select how many seconds
you want the Prestige to wait after the last input on the telephone’s keypad
before dialing (making) a call.

54 Chapter 7 Phone

This chapter covers how to configure the Prestige’s phone book.

8.1 Phone Book Introduction

You can use the phone book feature to configure speed dial entries and the lifeline settings.

8.1.1 Speed Dial

Speed dial provides shortcuts for dialing frequently used (VoIP) phone numbers.

8.1.1.1 Peer-to-Peer Calls

You can call another VoIP device directly without going through a SIP server. You must set
up a speed dial entry in the phone book in order to do this. Select Non-Proxy (Use IP or
URL) in the Type column and enter the callee’s IP address or domain name. The Prestige
sends SIP INVITE requests to the peer VoIP device when you use the speed dial entry.

You do not need to configure a SIP account on the Prestige 2002 in order to make a peer-to­peer VoIP call. You must still configure a SIP account on the Prestige 2002L in order to make
a peer-to-peer VoIP call.

Prestige 2002 Series User’s Guide

CHAPTER 8

Phone Book

8.1.2 Lifeline (Prestige 2002L)

With lifeline you can make and receive regular phone calls. Use a prefix number to make a
regular call whenever the VoIP service is available. When the VoIP service is not available,
you can make regular calls without dialing a prefix number. You can also specify phone
numbers to which the Prestige will always send calls through the regular phone service
(without the need of dialing a prefix number).

You can also specify phone numbers that should always use the regular phone service (without
having to dial a prefix number). Do this for emergency numbers (like those for contacting
police, fire or emergency medical services).

8.2 Speed Dial Configuration

Click PHONEBOOK in the navigation panel and then Speed Dial to display the following
screen.

Chapter 8 Phone Book 55

Prestige 2002 Series User’s Guide

Figure 25 Phone Book

The following table describes the labels in this screen.

Table 14 Phone Book

LABEL DESCRIPTION

Add New Entry Use this section of the screen to edit and save new or existing speed dial phone

book entries.

Speed Dial Select a speed dial key combination from the drop-down list box.

SIP Number Enter the SIP number of the party that you will call (use the number or text that

comes before the @ symbol in a full SIP URI). You can use up to 127 ASCII
characters.

Name Enter a descriptive name to identify the party that you will use this entry to call.You

can use up to 127 ASCII characters.

Type Select Use Proxy if calls to this party use your SIP account configured in the VoIP

Add Click this button to save the entry in the speed dial phone book. The speed dial

Speed Dial Phone
Book

Speed Dial This is the entry’s speed dial key combination. Press this key combination on a

Name This is the descriptive name of the party that you will use this speed dial entry to

screen.
Select Non-Proxy (Use IP or URL) if calls to this party use a different SIP server

or go directly to the callee’s VoIP phone (peer-to-peer). Enter the SIP server’s or
the party’s IP address or domain name (up to 127 ASCII Extended set characters).

entry displays in the Speed Dial Phone Book section of the screen.

This section of the screen displays the currently saved speed dial entries. You can
configure up to 10 entries and use them to make calls.

telephone attached to the Prestige in order to call the party named in this entry.

call.

56 Chapter 8 Phone Book

Prestige 2002 Series User’s Guide

Table 14 Phone Book (continued)

LABEL DESCRIPTION

SIP Number This is the SIP number of the party that you will call.

Type This field displays Use Proxy if calls to this party use one of your SIP accounts.

Delete Click this button to remove an entry from the speed dial phone book.

Edit Click this button to change the speed dial entry. The speed dial entry displays in

Clear Click this button to remove all of the entries from the speed dial phone book.

This field displays the SIP server’s or the party’s IP address or domain name if
calls to this party do not use one of your SIP accounts.

the Add New Entry section of the screen where you can edit it.

8.3 Lifeline Configuration (Prestige 2002L)

Click PHONEBOOK in the navigation panel and then Lifeline to display the following
screen.

Figure 26 Lifeline

The following table describes the labels in this screen.

Table 15 Lifeline

LABEL DESCRIPTION

PSTN Pre-fix
Number

Relay to PSTN Use these fields to specify phone numbers to which the Prestige will always send

Apply Click Apply to save your changes back to the Prestige.

Reset Click Reset to begin configuring this screen afresh.

Chapter 8 Phone Book 57

Specify the prefix number for dialing regular calls when the VoIP service is
available.

calls through the regular phone service without the need of dialing a prefix number.
These numbers must be for phones on the PSTN (not VoIP phones).

Prestige 2002 Series User’s Guide

58 Chapter 8 Phone Book

This chapter contains information about the Prestige’s Logs screen. Refer to the Appendices
for example log message explanations.

9.1 Viewing Logs

The web configurator allows you to look at all of the Prestige’s logs in one location.

Click LOGS in the navigation panel to open the View Log screen. Use the View Log screen to
display the Prestige’s logs.

Log entries in red indicate system error logs. The log wraps around and deletes the old entries
after it fills. Click a column heading to sort the entries. A triangle indicates ascending or
descending sort order.

Prestige 2002 Series User’s Guide

CHAPTER 9

Logs

Figure 27 View Log

The following table describes the labels in this screen.

Table 16 View Log

LABEL DESCRIPTION

Display Select All Logs to view all of the Prestige’s logs.

Select System Maintenance to view the Prestige’s maintenance logs.
Select System Error to view the Prestige’s error logs.
Select SIP to view Session Initiation Protocol logs.
Select RTP to view Real time Transport Protocol logs.
Select FSM to view Finite State Machine logs. These logs record phone actions.

Refresh Click Refresh to renew the log screen.

Clear Log Click Clear Log to delete all the logs.

Time This field displays the time the log was recorded. To configure the Prestige’s time

Message This field states the reason for the log.

Source This field lists the source IP address and the port number of the incoming packet.

and date, see Chapter 3 System Screens.

Chapter 9 Logs 59

Prestige 2002 Series User’s Guide

Table 16 View Log (continued)

LABEL DESCRIPTION

Destination This field lists the destination IP address and the port number of the incoming

packet.

Note This field displays additional information about the log entry.

9.1.1 Log Message Descriptions

The following tables provide descriptions of example log messages.

Table 17 System Error Logs

LOG MESSAGE DESCRIPTION

WAN connection is down. A WAN connection is down. You cannot access the network

through this interface.

Table 18 System Maintenance Logs

LOG MESSAGE DESCRIPTION

Time calibration is
successful

Time calibration failed The device failed to get information from the time server.
WAN interface gets IP: %s A WAN interface got a new IP address from the DHCP,

DHCP client IP expired A DHCP client's IP address has expired.
Successful WEB login Someone has logged on to the device's web configurator

WEB login failed Someone has failed to log on to the device's web configurator

Successful FTP login Someone has logged on to the device via ftp.
FTP login failed Someone has failed to log on to the device via ftp.
Time initialized by Daytime

Server
Time initialized by Time

server
Time initialized by NTP

server
Connect to Daytime server

fail
Connect to Time server fail The device was not able to connect to the Time server.
Connect to NTP server fail The device was not able to connect to the NTP server.

The device has adjusted its time based on information from
the time server.

PPPoE, PPTP or dial-up server.

interface.

interface.

The device got the time and date from the Daytime server.

The device got the time and date from the time server.

The device got the time and date from the NTP server.

The device was not able to connect to the Daytime server.

60 Chapter 9 Logs

Table 18 System Maintenance Logs (continued)

LOG MESSAGE DESCRIPTION

Prestige 2002 Series User’s Guide

Too large ICMP packet has
been dropped

Configuration Change: PC =
0x%x, Task ID = 0x%x

The device dropped an ICMP packet that was too large.

The device is saving configuration changes.

Table 19 SIP Logs

LOG MESSAGE DESCRIPTION

SIP Registration Success
by SIP:SIP Phone Number

SIP Registration Fail by
SIP:SIP Phone Number

SIP UnRegistration
Success by SIP:SIP Phone
Number

SIP UnRegistration Fail by
SIP:SIP Phone Number

The listed SIP account was successfully registered with a SIP
register server.

An attempt to register the listed SIP account with a SIP register
server was not successful.

The listed SIP account’s registration was deleted from the SIP
register server.

An attempt to delete the listed SIP account’s registration from the
SIP register server failed.

Table 20 RTP Logs

LOG MESSAGE DESCRIPTION

Error, RTP init fail The initialization of an RTP session failed.
Error, Call fail: RTP

connect fail
Error, RTP connection

cannot close

A VoIP phone call failed because the RTP session could not be
established.

The termination of an RTP session failed.

Chapter 9 Logs 61

Prestige 2002 Series User’s Guide

Table 21 FSM Logs: Caller Side

LOG MESSAGE DESCRIPTION

VoIP Call Start Ph[Phone
Port Number] <- Outgoing
Call Number

VoIP Call Established
Ph[Phone Port] -> Outgoing
Call Number

VoIP Call End Phone[Phone
Port]

Someone used a phone connected to the listed phone port to
initiate a VoIP call to the listed destination.

Someone used a phone connected to the listed phone port to
make a VoIP call to the listed destination.

A VoIP phone call made from a phone connected to the listed
phone port has terminated.

Table 22 FSM Logs: Callee Side

LOG MESSAGE DESCRIPTION

VoIP Call Start from
SIP[SIP Port Number]

VoIP Call Established
Ph[Phone Port] <- Outgoing
Call Number

VoIP Call End Phone[Phone
Port]

A VoIP phone call came to the Prestige from the listed SIP
number.

A VoIP phone call was set up from the listed SIP number to the
Prestige.

A VoIP phone call that came into the Prestige has terminated.

Table 23 Lifeline Logs

LOG MESSAGE DESCRIPTION

PSTN Call Start A PSTN call has been initiated.
PSTN Call End A PSTN call has terminated.
PSTN Call Established A PSTN call has been set up.

62 Chapter 9 Logs

This chapter displays system information such as ZyNOS firmware, port IP addresses and port
traffic statistics.

10.1 Maintenance Overview

The maintenance screens can help you view system information, upload new firmware,
manage configuration and restart your Prestige.

10.2 Status Screen

Click MAINTENANCE in the navigation panel to open the Status screen, where you can use
to monitor your Prestige. Note that these fields are READ-ONLY and are meant to be used for
diagnostic purposes.

Prestige 2002 Series User’s Guide

CHAPTER 10

Maintenance

Figure 28 System Status

The following table describes the labels in this screen.

Chapter 10 Maintenance 63

Prestige 2002 Series User’s Guide

Table 24 System Status

LABEL DESCRIPTION

System Name This is the System Name you chose in the SYSTEM General screen. It is for

identification purposes

Model Name The model name identifies your device type. The model name should also be on a

sticker on your device. If you are uploading firmware, be sure to upload firmware
for this exact model name.

ZyNOS Firmware
Version:

Ethernet Port

IP Address This is the Prestige’s IP address. This applies to both of the Prestige’s Ethernet

IP Subnet Mask This is the Prestige’s subnet mask. This applies to both of the Prestige’s Ethernet

MGNT Port

IP Address This is the static IP address of the Prestige’s logical Ethernet interface for

IP Subnet Mask This is the subnet mask of the Prestige’s logical Ethernet interface for

VoIP Statu s

SIP1/SIP 2 This is the SIP account configured on the Prestige

SIP Registration
Status

Register/
Unregister

Used Port This field displays the Prestige’s listening port for SIP traffic on this SIP account.

This is the ZyNOS Firmware version and the date created. ZyNOS is ZyXEL's
proprietary Network Operating System design.

ports.

ports.

management.

management.

This is the SIP registration status of the SIP account.
This field displays Registered when the Prestige has successfully registered the

SIP account with the SIP register server.
This field displays Not Registered when the Prestige has not successfully

registered the SIP account with the SIP register server.

Click Register to have the Prestige attempt to register the SIP account with the
SIP register server.

Click Unregister to delete the SIP account's registration on the SIP register
server. This removes the SIP registration server's SIP identity-to-IP address (or
domain name) mapping for this SIP account, it does not cancel your SIP account.

10.3 F/W Upload Screen

Find firmware at www.zyxel.com in a file that (usually) uses the system model name with a
"*.bin" extension, e.g., "Prestige.bin". The upload process uses HTTP (Hypertext Transfer
Protocol) and may take up to two minutes. After a successful upload, the system will reboot.

Click MAINTENANCE in the navigation panel and then the F/W UPLOAD tab. Follow the
instructions in this screen to upload firmware to your Prestige.

64 Chapter 10 Maintenance

Prestige 2002 Series User’s Guide

Figure 29 Firmware Upload

The following table describes the labels in this screen.

Table 25 Firmware Upload

LABEL DESCRIPTION

File Path Type in the location of the file you want to upload in this field or click Browse... to find it.

Browse... Click Browse... to find the .bin file you want to upload. Remember that you must

Upload Click Upload to begin the upload process. This process may take up to two minutes.

decompress compressed (.zip) files before you can upload them.

Note: Do not turn off the device while firmware upload is in
progress!

After you see the Firmware Upload in Process screen, wait two minutes before logging into
the device again.

Chapter 10 Maintenance 65

Prestige 2002 Series User’s Guide

Figure 30 Firmware Upload In Process

The device automatically restarts in this time causing a temporary network disconnect. In
some operating systems, you may see the following icon on your desktop.

Figure 31 Network Temporarily Disconnected

After two minutes, log in again and check your new firmware version in the System Status
screen.

If the upload was not successful, the following screen will appear. Click Return to go back to
the F/W Upload screen.

Figure 32 Firmware Upload Error

10.4 Configuration Screen

Click MAINTENANCE in the navigation panel and then the Configuration tab. Information
related to factory defaults, backup configuration, and restoring configuration appears as shown
next.

66 Chapter 10 Maintenance

Figure 33 Configuration

Prestige 2002 Series User’s Guide

10.4.1 Backup Configuration

Backup Configuration allows you to back up (save) the device’s current configuration to a
file on your computer. Once your device is configured and functioning properly, it is highly
recommended that you back up your configuration file before making configuration changes.
The backup configuration file will be useful in case you need to return to your previous
settings.

Click Backup to save the device’s current configuration to your computer.

10.4.2 Restore Configuration

Restore Configuration allows you to upload a new or previously saved configuration file
from your computer to your Prestige.

Table 26 Restore Configuration

LABEL DESCRIPTION

File Path Type in the location of the file you want to upload in this field or click Browse... to find it.

Browse... Click Browse... to find the file you want to upload. Remember that you must decompress

compressed (.ZIP) files before you can upload them.

Upload Click Upload to begin the upload process.

Chapter 10 Maintenance 67

Prestige 2002 Series User’s Guide

Note: Do not turn off the device while configuration file upload
is in progress.

After you see a “configuration upload successful” screen, you must then wait one minute
before logging into the device again.

Figure 34 Configuration Upload Successful

The device automatically restarts in this time causing a temporary network disconnect. In
some operating systems, you may see the following icon on your desktop.

Figure 35 Network Temporarily Disconnected

If you uploaded the default configuration file you may need to change the IP address of your
computer to be in the same subnet as that of the default management IP address (192.168.5.1).
See your Quick Start Guide or the appendices for details on how to set up your computer’s IP
address.

If the upload was not successful, a Configuration Upload Error screen will appear. Click
Return to go back to the Configuration screen.

10.4.3 Back to Factory Defaults

Clicking the Reset button in this section clears all user-entered configuration information and
returns the Prestige to its factory defaults as shown on the screen. The following warning
screen will appear.

68 Chapter 10 Maintenance

Figure 36 Reset Warning Message

You can also press the RESET button on the rear panel to reset the factory defaults of your
Prestige. For more information on the RESET button, see the Resetting the Prestige section.

10.5 Restart Screen

System restart allows you to reboot the Prestige without turning the power off.

Click MAINTENANCE in the navigation panel and then Restart. Click Restart to have the
Prestige reboot. This does not affect the Prestige's configuration.

Prestige 2002 Series User’s Guide

Figure 37 Restart Screen

Chapter 10 Maintenance 69

Prestige 2002 Series User’s Guide

70 Chapter 10 Maintenance

CHAPTER 11

Troubleshooting

This chapter covers potential problems and the corresponding remedies.

11.1 Problems Starting Up the Prestige

Table 27 Troubleshooting the Start-Up of Your Prestige

PROBLEM CORRECTIVE ACTION

Prestige 2002 Series User’s Guide

None of the
LEDs turn on
when I turn on
the Prestige.

Make sure that the Prestige’s power adaptor is connected to the Prestige and an
appropriate power source. Check that the power source is turned on.

Disconnect the Prestige’s power and reconnect it.
If the error persists, you may have a hardware problem. In this case, you should

contact your vendor.

11.2 Problems with the LAN or PC LED

Table 28 Troubleshooting the LAN or PC LED

PROBLEM CORRECTIVE ACTION

The LAN or PC LED
does not turn on.

Check your Ethernet cable connections and type (refer to the Quick Start Guide
for details).

Check for faulty Ethernet cables.

Make sure your computer’s Ethernet card is working properly.

Chapter 11 Troubleshooting 71

Prestige 2002 Series User’s Guide

11.3 Problems with the LAN Interface

Table 29 Troubleshooting the LAN Interface

PROBLEM CORRECTIVE ACTION

I cannot access the
Prestige from the
LAN.

I cannot ping any
computer on the
LAN.

The Prestige cannot
get an IP address
from the ISP.

If the LAN or PC LED is off, see Table 28.
Make sure that the IP address and the subnet mask of the Prestige and your

computer(s) are on the same subnet.

If the LAN and PC LEDs are both off, see Table 28.
Make sure that the IP address and the subnet mask of the Prestige and the

computers are on the same subnet.

The ISP provides the IP address after authenticating you. Authentication may be
through the user name and password, the MAC address or the host name.

The username and password apply to PPPoE and PPPoA encapsulation only.
Make sure that you have entered the correct Service Type, User Name and
Password (be sure to use the correct casing). Verify your Ethernet settings, see

Chapter 4 Ethernet Screens.

11.4 Problems with Internet Access

Table 30 Troubleshooting Internet Access

PROBLEM CORRECTIVE ACTION

I cannot access
the Internet.

Internet
connection
disconnects.

Make sure the Prestige is turned on and connected to the network.
Verify your Ethernet settings, see Chapter 4 Ethernet Screens.
Make sure you entered the correct user name and password.

Contact your ISP.

11.5 Problems with the Password

Table 31 Troubleshooting the Password

PROBLEM CORRECTIVE ACTION

I cannot access the
Prestige.

72 Chapter 11 Troubleshooting

The username is admin. The default password is 1234. The Password and
Username fields are case-sensitive. Make sure that you enter the correct
password and username using the proper casing.

If you have changed the password and have now forgotten it, you will need to
restore the default configuration file (see “Resetting the Prestige”). This restores
all of the factory defaults including the password.

11.6 Problems with the Web Configurator

Table 32 Troubleshooting the Web Configurator

PROBLEM CORRECTIVE ACTION

Prestige 2002 Series User’s Guide

I cannot access the
web configurator.

I access the wrong
Prestige 2002 when
using the
management IP
address to access
the Prestige 2002.

Also see Table 31.
Your computer’s and the Prestige’s IP addresses must be on the same subnet.
Your computer’s IP address must be on the same subnet as the Prestige’s

Ethernet IP address or management IP address (whichever you want to use to
access the Prestige).

If the Prestige’s Ethernet IP address or management IP address has changed,
then enter the new one as the URL.

If you have switched from managing one Prestige 2002 to another, your
computer’s ARP (Address Resolution Protocol) table may contain an entry that
maps the management IP address to a different Prestige 2002’s MAC address).

In Windows, use arp -d at the command prompt to delete all entries in your
computer’s ARP table. Otherwise, you can use arp -d inet_addr [if_addr]
(where if_addr is the Prestige 2002’s management IP address) to remove just the
entry for the Prestige 2002’s management IP address.

This problem may occur if you have more than one Prestige 2002 on the same
LAN. Disconnect your Prestige 2002 from the network and connect directly
through the Prestige 2002’s PC port. You may also need to delete your
computer’s ARP table entry for the Prestige 2002’s IP address (see above).

11.7 Problems with Telephone or Telephone Port

Table 33 Troubleshooting Telephone

PROBLEM CORRECTIVE ACTION

The telephone port
won’t work or the
telephone lacks a
dial tone.

Check the telephone connections and telephone wire.
Make sure you have the VoIP screen properly configured.

Chapter 11 Troubleshooting 73

Prestige 2002 Series User’s Guide

11.8 Problems with Voice Service

Table 34 Troubleshooting Voice Service

PROBLEM CORRECTIVE ACTION

After the VoIP is
configured and
working, others are
unable to call you
or you lose your
connection during a
call. There is a NAT
router between the
Prestige and the
SIP server.

This could be caused by a short NAT UDP session timeout on the NAT router.
When the SIP session’s entry in the NAT table times out, the NAT router does not
have any record to use for forwarding VoIP traffic to the Prestige.

If possible, set the NAT router to use a longer NAT UDP session timeout.
Otherwise, try one of the following:

• Shorten the registration expiration period (see the Expiration Duration field
in the VoIP Advanced screen) in order to cause the Prestige to re-register
with the SIP register server more frequently. Note that this will not help if the
SIP register server enforces a long registration expiration period (since the
Prestige will also use the period set by the SIP register server).

• Use STUN. If your VoIP service provider does not have a STUN server, you
can still enable STUN and enter the IP address and port number of the SIP
server in the STUN server fields. This causes the Prestige to send STUN
requests to the SIP server. While this will not make STUN work (since there
won’t be any responses to the STUN requests), it should keep the NAT UDP
session in the NAT router.

74 Chapter 11 Troubleshooting

Prestige 2002 Series User’s Guide

Hardware Specifications

Ethernet Port Specifications

10/100Mbps Half / Full Auto-negotiation, Auto-crossover

Prestige 2002 Power Adaptor Specifications

Table 35 Prestige 2002 Power Adaptor Specifications

NORTH AMERICAN PLUG STANDARDS

AC Power Adapter Model DV-1215A

Input Power AC120Volts/60Hz/30W

Output Power AC12Volts/1.25A

Power Consumption 11 W

Safety Standards UL, CUL, CSA (UL 1310, CSA C22.2 No.223)

Appendix A

NORTH AMERICAN PLUG STANDARDS

AC Power Adapter Model AA-121A25

Input Power AC120Volts/60Hz/19W

Output Power AC 12Volts/ 1.25A

Power Consumption 11W

Safety Standards UL, CUL (UL 1310, CSA C22.2 No.223)

EUROPEAN PLUG STANDARDS

AC Power Adapter Model AA-121A3BN

Input Power AC230Volts/50Hz/140mA

Output Power AC12Volts/1.3A

Power Consumption 11W

Safety Standards ITS-GS, CE (EN 60950)

Appendix A Hardware Specifications 75

Prestige 2002 Series User’s Guide

Prestige 2002L Power Adaptor Specifications

Table 36 Prestige 2002L Power Adaptor Specifications

NORTH AMERICAN PLUG STANDARDS

AC Power Adapter Model DV-1215A

Input Power AC120Volts/60Hz/30W

Output Power AC12Volts/1.25A

Power Consumption 14 W

Safety Standards UL, CUL, CSA (UL 1310, CSA C22.2 No.223)

NORTH AMERICAN PLUG STANDARDS

AC Power Adapter Model AA-121A25

Input Power AC120Volts/60Hz/19W

Output Power AC 12Volts/ 1.25A

Power Consumption 14W

Safety Standards UL, CUL (UL 1310, CSA C22.2 No.223)

EUROPEAN PLUG STANDARDS

AC Power Adapter Model AA-121A3BN

Input Power AC230Volts/50Hz/140mA

Output Power AC12Volts/1.3A

Power Consumption 14W

Safety Standards ITS-GS, CE (EN 60950)

UNITED KINGDOM PLUG STANDARDS

AC Power Adapter Model AA-121A3D

Input Power AC230Volts/50Hz/140mA

Output Power AC12Volts/1.3A

Power Consumption 14W

Safety Standards ITS-GS, CE (EN 60950)

76 Appendix A Hardware Specifications

Prestige 2002 Series User’s Guide

Appendix B

Setting up Your Computer’s IP Address

All computers must have a 10M or 100M Ethernet adapter card and TCP/IP installed.

Windows 95/98/Me/NT/2000/XP, Macintosh OS 7 and later operating systems and all
versions of UNIX/LINUX include the software components you need to install and use TCP/
IP on your computer. Windows 3.1 requires the purchase of a third-party TCP/IP application
package.

TCP/IP should already be installed on computers using Windows NT/2000/XP, Macintosh OS
7 and later operating systems.

After the appropriate TCP/IP components are installed, configure the TCP/IP settings in order
to "communicate" with your network.

If you manually assign IP information instead of using dynamic assignment, make sure that
your computers have IP addresses that place them in the same subnet as the Prestige’s LAN
port.

Windows 95/98/Me

Click Start, Settings, Control Panel and double-click the Network icon to open the Network
window

Appendix B Setting up Your Computer’s IP Address 77

Prestige 2002 Series User’s Guide

Figure 38 WIndows 95/98/Me: Network: Configuration

Installing Components

The Network window Configuration tab displays a list of installed components. You need a
network adapter, the TCP/IP protocol and Client for Microsoft Networks.

If you need the adapter:

1 In the Network window, click Add.

2 Select Adapter and then click Add.

3 Select the manufacturer and model of your network adapter and then click OK.

If you need TCP/IP:

1 In the Network window, click Add.

2 Select Protocol and then click Add.

3 Select Microsoft from the list of manufacturers.

4 Select TCP/IP from the list of network protocols and then click OK.

If you need Client for Microsoft Networks:

1 Click Add.

2 Select Client and then click Add.

78 Appendix B Setting up Your Computer’s IP Address

3 Select Microsoft from the list of manufacturers.

4 Select Client for Microsoft Networks from the list of network clients and then click

5 Restart your computer so the changes you made take effect.

Configuring

1 In the Network window Configuration tab, select your network adapter's TCP/IP entry

2 Click the IP Address tab.

Figure 39 Windows 95/98/Me: TCP/IP Properties: IP Address

Prestige 2002 Series User’s Guide

OK.

and click Properties

• If your IP address is dynamic, select Obtain an IP address
automatically.

• If you have a static IP address, select Specify an IP address and type
your information into the IP Address and Subnet Mask fields.

3 Click the DNS Configuration tab.

• If you do not know your DNS information, select Disable DNS.

• If you know your DNS information, select Enable DNS and type the
information in the fields below (you may not need to fill them all in).

Appendix B Setting up Your Computer’s IP Address 79

Prestige 2002 Series User’s Guide

Figure 40 Windows 95/98/Me: TCP/IP Properties: DNS Configuration

4 Click the Gateway tab.

• If you do not know your gateway’s IP address, remove previously

• If you have a gateway IP address, type it in the New gateway field

5 Click OK to save and close the TCP/IP Properties window.

6 Click OK to close the Network window. Insert the Windows CD if prompted.

7 Turn on your Prestige and restart your computer when prompted.

Verifying Settings

1 Click Start and then Run.

2 In the Run window, type "winipcfg" and then click OK to open the IP Configuration

window.

3 Select your network adapter. You should see your computer's IP address, subnet mask

and default gateway.

Windows 2000/NT/XP

installed gateways.

and click Add.

1 For Windows XP, click start, Control Panel. In Windows 2000/NT, click Start,

Settings, Control Panel.

80 Appendix B Setting up Your Computer’s IP Address

Figure 41 Windows XP: Start Menu

Prestige 2002 Series User’s Guide

2 For Windows XP, click Network Connections. For Windows 2000/NT, click Network

and Dial-up Connections.

Figure 42 Windows XP: Control Panel

3 Right-click Local Area Connection and then click Properties.

Appendix B Setting up Your Computer’s IP Address 81

Prestige 2002 Series User’s Guide

Figure 43 Windows XP: Control Panel: Network Connections: Properties

4 Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and click

Properties.

Figure 44 Windows XP: Local Area Connection Properties

5 The Internet Protocol TCP/IP Properties window opens (the General tab in Windows

XP).

• If you have a dynamic IP address click Obtain an IP address
automatically.

82 Appendix B Setting up Your Computer’s IP Address

• If you have a static IP address click Use the following IP Address
and fill in the IP address, Subnet mask, and Default gateway fields.
Click Advanced.

Figure 45 Windows XP: Advanced TCP/IP Settings

Prestige 2002 Series User’s Guide

6 If you do not know your gateway's IP address, remove any previously installed gateways

in the IP Settings tab and click OK.

Do one or more of the following if you want to configure additional IP addresses:

•In the IP Settings tab, in IP addresses, click Add.

•In TCP/IP Address, type an IP address in IP address and a subnet
mask in Subnet mask, and then click Add.

• Repeat the above two steps for each IP address you want to add.

• Configure additional default gateways in the IP Settings tab by
clicking Add in Default gateways.

•In TCP/IP Gateway Address, type the IP address of the default
gateway in Gateway. To manually configure a default metric (the
number of transmission hops), clear the Automatic metric check box
and type a metric in Metric.

• Click Add.

• Repeat the previous three steps for each default gateway you want to
add.

• Click OK when finished.

Appendix B Setting up Your Computer’s IP Address 83

Prestige 2002 Series User’s Guide

7 In the Internet Protocol TCP/IP Properties window (the General tab in Windows XP):

• Click Obtain DNS server address automatically if you do not know

• If you know your DNS server IP address(es), click Use the following

Figure 46 Windows XP: Internet Protocol (TCP/IP) Properties

your DNS server IP address(es).

DNS server addresses, and type them in the Preferred DNS server
and Alternate DNS server fields.

If you have previously configured DNS servers, click Advanced and
then the DNS tab to order them.

8 Click OK to close the Internet Protocol (TCP/IP) Properties window.

9 Click OK to close the Local Area Connection Properties window.

10Turn on your Prestige and restart your computer (if prompted).

Verifying Settings

1 Click Start, All Programs, Accessories and then Command Prompt.

2 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can

also open Network Connections, right-click a network connection, click Status and then
click the Support tab.

84 Appendix B Setting up Your Computer’s IP Address

Macintosh OS 8/9

1 Click the Apple menu, Control Panel and double-click TCP/IP to open the TCP/IP

Control Panel.

Figure 47 Macintosh OS 8/9: Apple Menu

Prestige 2002 Series User’s Guide

2 Select Ethernet built-in from the Connect via list.

Appendix B Setting up Your Computer’s IP Address 85

Prestige 2002 Series User’s Guide

Figure 48 Macintosh OS 8/9: TCP/IP

3 For dynamically assigned settings, select Using DHCP Server from the Configure: list.

4 For statically assigned settings, do the following:

•From the Configure box, select Manually.

• Type your IP address in the IP Address box.

• Type your subnet mask in the Subnet mask box.

• Type the IP address of your Prestige in the Router address box.

5 Close the TCP/IP Control Panel.

6 Click Save if prompted, to save changes to your configuration.

7 Turn on your Prestige and restart your computer (if prompted).

Verifying Settings

Check your TCP/IP properties in the TCP/IP Control Panel window.

Macintosh OS X

1 Click the Apple menu, and click System Preferences to open the System Preferences

window.

86 Appendix B Setting up Your Computer’s IP Address

Prestige 2002 Series User’s Guide

Figure 49 Macintosh OS X: Apple Menu

2 Click Network in the icon bar.

• Select Automatic from the Location list.

• Select Built-in Ethernet from the Show list.

• Click the TCP/IP tab.

3 For dynamically assigned settings, select Using DHCP from the Configure list.

Figure 50 Macintosh OS X: Network

4 For statically assigned settings, do the following:

•From the Configure box, select Manually.

• Type your IP address in the IP Address box.

• Type your subnet mask in the Subnet mask box.

• Type the IP address of your Prestige in the Router address box.

Appendix B Setting up Your Computer’s IP Address 87

Prestige 2002 Series User’s Guide

5 Click Apply Now and close the window.

6 Turn on your Prestige and restart your computer (if prompted).

Verifying Settings

Check your TCP/IP properties in the Network window.

88 Appendix B Setting up Your Computer’s IP Address

IP Addressing

Routers “route” based on the network number. The router that delivers the data packet to the
correct destination host uses the host ID.

IP Classes

An IP address is made up of four octets (eight bits), written in dotted decimal notation, for
example, 192.168.1.1. IP addresses are categorized into different classes. The class of an
address depends on the value of its first octet.

Prestige 2002 Series User’s Guide

Appendix C

IP Subnetting

• Class “A” addresses have a 0 in the left most bit. In a class “A” address the first octet is
the network number and the remaining three octets make up the host ID.

• Class “B” addresses have a 1 in the left most bit and a 0 in the next left most bit. In a class
“B” address the first two octets make up the network number and the two remaining
octets make up the host ID.

• Class “C” addresses begin (starting from the left) with 1 1 0. In a class “C” address the
first three octets make up the network number and the last octet is the host ID.

• Class “D” addresses begin with 1 1 1 0. Class “D” addresses are used for multicasting.
(There is also a class “E” address. It is reserved for future use.)

Table 37 Classes of IP Addresses

IP ADDRESS: OCTET 1 OCTET 2 OCTET 3 OCTET 4

Class A 0 Network number Host ID Host ID Host ID

Class B 10 Network number Network number Host ID Host ID

Class C 11 0 Network number Network number Network number Host ID

Note: Host IDs of all zeros or all ones are not allowed.

Therefore:

A class “C” network (8 host bits) can have 2

A class “B” address (16 host bits) can have 2

A class “A” address (24 host bits) can have 2

Appendix C IP Subnetting 89

8

–2 or 254 hosts.

16

–2 or 65534 hosts.

24

–2 hosts (approximately 16 million hosts).

Prestige 2002 Series User’s Guide

Since the first octet of a class “A” IP address must contain a “0”, the first octet of a class “A”
address can have a value of 0 to 127.

Similarly the first octet of a class “B” must begin with “10”, therefore the first octet of a class
“B” address has a valid range of 128 to 191. The first octet of a class “C” address begins with
“110”, and therefore has a range of 192 to 223.

Table 38 Allowed IP Address Range By Class

CLASS

Class A 00000000 to 01111111 0 to 127

Class B 10000000 to 10111111 128 to 191

Class C 110 00000 to 11011111 192 to 223

Class D 1110 0000 to 11101111 224 to 239

Subnet Masks

A subnet mask is used to determine which bits are part of the network number, and which bits
are part of the host ID (using a logical AND operation). A subnet mask has 32 is a “1” then
the corresponding bit in the IP address is part of the network number. If a bit in the subnet
mask is “0” then the corresponding bit in the IP address is part of the host ID.

Subnet masks are expressed in dotted decimal notation just as IP addresses are. The “natural”
masks for class A, B and C IP addresses are as follows.

Table 39 “Natural” Masks

ALLOWED RANGE OF FIRST OCTET
(BINARY)

ALLOWED RANGE OF FIRST OCTET
(DECIMAL)

CLASS NATURAL MASK

A 255.0.0.0

B 255.255.0.0

C 255.255.255.0

Subnetting

With subnetting, the class arrangement of an IP address is ignored. For example, a class C
address no longer has to have 24 bits of network number and 8 bits of host ID. With
subnetting, some of the host ID bits are converted into network number bits. By convention,
subnet masks always consist of a continuous sequence of ones beginning from the left most bit
of the mask, followed by a continuous sequence of zeros, for a total number of 32 bits.

90 Appendix C IP Subnetting

Prestige 2002 Series User’s Guide

Since the mask is always a continuous number of ones beginning from the left, followed by a
continuous number of zeros for the remainder of the 32 bit mask, you can simply specify the
number of ones instead of writing the value of each octet. This is usually specified by writing
a “/” followed by the number of bits in the mask after the address.

For example, 192.1.1.0 /25 is equivalent to saying 192.1.1.0 with mask 255.255.255.128.

The following table shows all possible subnet masks for a class “C” address using both
notations.

Table 40 Alternative Subnet Mask Notation

SUBNET MASK IP ADDRESS SUBNET MASK “1” BITS LAST OCTET BIT VALUE

255.255.255.0 /24 0000 0000

255.255.255.128 /25 1000 0000

255.255.255.192 /26 1100 0000

255.255.255.224 /27 1110 0000

255.255.255.240 /28 1111 0000

255.255.255.248 /29 1111 1000

255.255.255.252 /30 1111 110 0

The first mask shown is the class “C” natural mask. Normally if no mask is specified it is
understood that the natural mask is being used.

Example: Two Subnets

As an example, you have a class “C” address 192.168.1.0 with subnet mask of 255.255.255.0.

Table 41 Two Subnets Example

NETWORK NUMBER HOST ID

IP Address 192.168.1. 0

IP Address (Binary) 11000000.10101000.00000001. 00000000

Subnet Mask 255.255.255. 0

Subnet Mask (Binary) 11111111 .11111111.11111111 . 00000000

The first three octets of the address make up the network number (class “C”). You want to
have two separate networks.

Appendix C IP Subnetting 91

Prestige 2002 Series User’s Guide

Divide the network 192.168.1.0 into two separate subnets by converting one of the host ID bits
of the IP address to a network number bit. The “borrowed” host ID bit can be either “0” or “1”
thus giving two subnets; 192.168.1.0 with mask 255.255.255.128 and 192.168.1.128 with
mask 255.255.255.128.

Note: In the following charts, shaded/bolded last octet bit values indicate host
ID bits “borrowed” to form network ID bits. The number of “borrowed” host ID
bits determines the number of subnets you can have. The remaining number
of host ID bits (after “borrowing”) determines the number of hosts you can
have on each subnet.

Table 42 Subnet 1

NETWORK NUMBER

IP Address 192.168.1. 0

IP Address (Binary) 11000000.10101000.00000001. 00000000

Subnet Mask 255.255.255. 128

Subnet Mask (Binary) 11111111.11111111 .11111111. 10000000

Subnet Address: 192.168.1.0 Lowest Host ID: 192.168.1.1

Broadcast Address:

192.168.1.127

Highest Host ID: 192.168.1.126

LAST OCTET BIT
VAL UE

Table 43 Subnet 2

NETWORK NUMBER LAST OCTET BIT VALUE

IP Address 192.168.1. 128

IP Address (Binary) 11000000.10101000.00000001. 10000000

Subnet Mask 255.255.255. 128

Subnet Mask (Binary) 11111111 .11111111.11111111 . 10000000

Subnet Address:

192.168.1.128

Broadcast Address:

192.168.1.255

Lowest Host ID: 192.168.1.129

Highest Host ID: 192.168.1.254

The remaining 7 bits determine the number of hosts each subnet can have. Host IDs of all
zeros represent the subnet itself and host IDs of all ones are the broadcast address for that
subnet, so the actual number of hosts available on each subnet in the example above is 2

7

– 2

or 126 hosts for each subnet.

192.168.1.0 with mask 255.255.255.128 is the subnet itself, and 192.168.1.127 with mask

255.255.255.128 is the directed broadcast address for the first subnet. Therefore, the lowest IP
address that can be assigned to an actual host for the first subnet is 192.168.1.1 and the highest
is 192.168.1.126. Similarly the host ID range for the second subnet is 192.168.1.129 to

192.168.1.254.

92 Appendix C IP Subnetting

Example: Four Subnets

The above example illustrated using a 25-bit subnet mask to divide a class “C” address space
into two subnets. Similarly to divide a class “C” address into four subnets, you need to
“borrow” two host ID bits to give four possible combinations of 00, 01, 10 and 11. The subnet
mask is 26 bits (11111111.11111111.11111111.11000000) or 255.255.255.192. Each subnet
contains 6 host ID bits, giving 2
1’s is the broadcast address on the subnet).

Table 44 Subnet 1

Prestige 2002 Series User’s Guide

6

-2 or 62 hosts for each subnet (all 0’s is the subnet itself, all

NETWORK NUMBER

IP Address 192.168.1. 0

IP Address (Binary) 11000000.10101000.00000001. 00000000

Subnet Mask (Binary) 11111111.11111111. 11111111. 11 000000

Subnet Address: 192.168.1.0 Lowest Host ID: 192.168.1.1

Broadcast Address:

192.168.1.63

Highest Host ID: 192.168.1.62

LAST OCTET BIT
VALUE

Table 45 Subnet 2

NETWORK NUMBER

IP Address 192.168.1. 64

IP Address (Binary) 11000000.10101000.00000001. 01000000

Subnet Mask (Binary) 11111111. 11111111.11111111. 11000000

Subnet Address: 192.168.1.64 Lowest Host ID: 192.168.1.65

Broadcast Address: 192.168.1.127 Highest Host ID: 192.168.1.126

LAST OCTET BIT
VALUE

Table 46 Subnet 3

NETWORK NUMBER

IP Address 192.168.1. 128

IP Address (Binary) 11000000.10101000.00000001. 10000000

Subnet Mask (Binary) 11111111.11111111. 11111111. 11 000000

Subnet Address:

192.168.1.128

Broadcast Address:

192.168.1.191

Lowest Host ID: 192.168.1.129

Highest Host ID: 192.168.1.190

LAST OCTET BIT
VALUE

Appendix C IP Subnetting 93

Prestige 2002 Series User’s Guide

Table 47 Subnet 4

IP Address 192.168.1. 192

IP Address (Binary) 11000000.10101000.00000001. 11000000

Subnet Mask (Binary) 11111111 .11111111.11111111 . 11000000

Subnet Address:

192.168.1.192

Broadcast Address:

192.168.1.255

Example Eight Subnets

Similarly use a 27-bit mask to create 8 subnets (001, 010, 011, 100, 101, 110).

The following table shows class C IP address last octet values for each subnet.

Table 48 Eight Subnets

NETWORK NUMBER LAST OCTET BIT VALUE

Lowest Host ID: 192.168.1.193

Highest Host ID: 192.168.1.254

SUBNET SUBNET ADDRESS FIRST ADDRESS LAST ADDRESS

1 0 1 30 31

2 32 33 62 63

3 64 65 94 95

4 96 97 126 127

5 128 129 158 159

6 160 161 190 191

7 192 193 222 223

8 224 223 254 255

BROADCAST
ADDRESS

The following table is a summary for class “C” subnet planning.

Table 49 Class C Subnet Planning

NO. “BORROWED” HOST
BITS

1 255.255.255.128 (/25) 2 126

2 255.255.255.192 (/26) 4 62

3 255.255.255.224 (/27) 8 30

4 255.255.255.240 (/28) 16 14

5 255.255.255.248 (/29) 32 6

6 255.255.255.252 (/30) 64 2

7 255.255.255.254 (/31) 128 1

SUBNET MASK NO. SUBNETS

NO. HOSTS PER
SUBNET

94 Appendix C IP Subnetting

Prestige 2002 Series User’s Guide

Subnetting With Class A and Class B Networks.

For class “A” and class “B” addresses the subnet mask also determines which bits are part of
the network number and which are part of the host ID.

A class “B” address has two host ID octets available for subnetting and a class “A” address has
three host ID octets (see Table 37) available for subnetting.

The following table is a summary for class “B” subnet planning.

Table 50 Class B Subnet Planning

NO. “BORROWED” HOST
BITS

1 255.255.128.0 (/17) 2 32766

2 255.255.192.0 (/18) 4 16382

3 255.255.224.0 (/19) 8 8190

4 255.255.240.0 (/20) 16 4094

5 255.255.248.0 (/21) 32 2046

6 255.255.252.0 (/22) 64 1022

7 255.255.254.0 (/23) 128 510

8 255.255.255.0 (/24) 256 254

9 255.255.255.128 (/25) 512 126

10 255.255.255.192 (/26) 1024 62

11 255.255.255.224 (/27) 2048 30

12 255.255.255.240 (/28) 4096 14

13 255.255.255.248 (/29) 8192 6

14 255.255.255.252 (/30) 16384 2

15 255.255.255.254 (/31) 32768 1

SUBNET MASK NO. SUBNETS

NO. HOSTS PER
SUBNET

Appendix C IP Subnetting 95

Prestige 2002 Series User’s Guide

96 Appendix C IP Subnetting

PPPoE in Action

An ADSL modem bridges a PPP session over Ethernet (PPP over Ethernet, RFC 2516) from
your computer to an ATM PVC (Permanent Virtual Circuit) which connects to a DSL Access
Concentrator where the PPP session terminates (see Figure 51). One PVC can support any
number of PPP sessions from your LAN. PPPoE provides access control and billing
functionality in a manner similar to dial-up services using PPP.

Benefits of PPPoE

PPPoE offers the following benefits:

Prestige 2002 Series User’s Guide

Appendix D

PPPoE

It provides you with a familiar dial-up networking (DUN) user interface.

It lessens the burden on the carriers of provisioning virtual circuits all the way to the ISP on
multiple switches for thousands of users. For GSTN (PSTN and ISDN), the switching fabric
is already in place.

It allows the ISP to use the existing dial-up model to authenticate and (optionally) to provide
differentiated services.

Traditional Dial-up Scenario

The following diagram depicts a typical hardware configuration where the computers use
traditional dial-up networking.

Appendix D PPPoE 97

Prestige 2002 Series User’s Guide

Figure 51 Single-Computer per Device Hardware Configuration

How PPPoE Works

The PPPoE driver makes the Ethernet appear as a serial link to the computer and the computer
runs PPP over it, while the modem bridges the Ethernet frames to the Access Concentrator
(AC). Between the AC and an ISP, the AC is acting as a L2TP (Layer 2 Tunneling Protocol)
LAC (L2TP Access Concentrator) and tunnels the PPP frames to the ISP. The L2TP tunnel is
capable of carrying multiple PPP sessions.

With PPPoE, the VC (Virtual Circuit) is equivalent to the dial-up connection and is between
the modem and the AC, as opposed to all the way to the ISP. However, the PPP negotiation is
between the computer and the ISP.

Prestige as a PPPoE Client

When using the Prestige as a PPPoE client, the computers on the LAN see only Ethernet and
are not aware of PPPoE. This alleviates the administrator from having to manage the PPPoE
clients on the individual computers.

Figure 52 Prestige as a PPPoE Client

98 Appendix D PPPoE

Prestige 2002 Series User’s Guide

Index

Numerics

64kbps 50
8kbps 50

A

AbS 46
ACK Message 40
Administrator Inactivity Timer 30
ALG 46
Alternative Subnet Mask Notation 91
Analog Telephone Adaptor 17
Analysis-by-Synthesis 46
Application Layer Gateway 46
ATA 17
Authentication Password 48
Authentication User ID 48
Auto-crossover 17
Auto-crossover 10/100 Mbps Ethernet LAN 17
Auto-negotiating 17
Auto-provisioning 19

B

Backup Configuration 67
BYE Request 40

Configuration Screen 66
Configuration Upload Successful 68
Copyright 3
CoS 51
Customer Support 6

D

Date 33
Daylight Savings 33
Default Password 23
DHCP 29
DHCP Clients 29
Differentiated Services 51
DiffServ 51
DiffServ Code Point (DSCP) 51
DiffServ Code Points 51
DiffServ marking rule 51
DNS 35, 37
DNS Server Address Assignment 35
DNS Servers 37
Domain Name 29, 30, 35
Domain Name System 37
DS Field 51
DS field 51
DSCPs 51
Dynamic Jitter Buffer 18

E

C

Caller ID 48
Class of Service 51
Class of Service (CoS) 51
Client-server Protocol 40
Codec 46, 50
Codecs 18
Coder/Decoder 46, 50
Computer Name 29

Index 99

Echo Cancellation 19, 53
Emergency Numbers 55
Ethernet 35
ETHERNET Screen 36
Expiration Duration 49
External IP Addresses 42

Prestige 2002 Series User’s Guide

F

F/W Upload Screen 64
Factory Defaults 68
Fax 19
FCC 4
Firmware 64
Firmware Upgrades 19
Firmware Upload Error 66
Firmware Upload In Process 66
Full Cone NAT 43

G

G.168 53
G.168 Active 54
G. 711 18, 46, 50
G.729 18, 46, 50
General Setup 29
Get IP Address Automatically 37

H

Host 31
Host IDs 89
HTTP 64
Hypertext Transfer Protocol 64

J

JavaScript 23
Jitter Buffer 18

L

LAN Ethernet Port 35
LAN LED 71
Lifeline 17, 55
Lifeline Screen 57
Listening Port 48, 50
Listening Volume 54
Logs 59

M

Maintenance 63
Management IP Address 23
Mgnt Port Screen 38
Min-SE 50
Model 64
Model Name 64
Multimedia 39
Multiple SIP Accounts 18
Multiple Voice Channels 18

N

I

NAT 42
IEEE 802.1Q VLAN 52
IETF 36
Internal IP Addresses 42
Internet Access Setup 72
Internet Engineering Task Force 36
Internet Explorer 23
Internet Protocol Private Branch Exchange 20
Internet Telephony Service Provider 19
IP Address 23, 35
IP Addressing 89
IP Classes 89
IP-PBX 20
ITSP 19
ITU-T 53

100 Index

Full Cone 43
Port Restricted Cone 44

Restricted Cone 44
NAT Routers 42
NAT Types 43
Netscape Navigator 23
Network Address Translators 42
Network Temporarily Disconnected 66, 68
Non-Proxy 56
NTP Time Servers 31