Manuals / ZyXEL Communications / Communications / Telephone

ZyXEL Communications P2000W manual 13.8 ToS, Introduction to DiffServ

Models: P2000W

1 131

Download 131 pages 38.99 Kb

Page 104

P-2000W_V2 User’s Guide

13.8 ToS

The second byte in an IPv4 packet is the Type of Service (ToS) byte. The first three bits (by themselves) of the ToS byte are referred to as the IP Precedence bits and refer to a priority from 0 to 7. The next three bits are used in conjunction with the IP Precedence bits to define the Diffserv Code Point protocol (DSCP bits). The last two bits are reserved for future use.

13.9 Introduction to DiffServ

Quality of Service (QOS) mechanisms provides the best service on a per-flow guarantee. To fine-tune the levels of services on the priority of the traffic flow using QoS places a heavy burden on the network infrastructure.

DiffServ is a class of service (CoS) model that marks packets so that they receive specific per- hope 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.

Note: It is strongly recommended for better network performance that the settings are left as per their defaults.

Figure 36 TOS/DIFFSERV

Table 22 TOS/DIFFSERV

LABEL	DESCRIPTION

ToS/DiffServ (00~FF)	Type the HEX code that represents the best method for data
	transmission.
APPLY	Click APPLY to save your changes without restarting the Prestige. Your
	wireless LAN, Internet and SIP settings changes do not take affect until
	you use RESTART (in the navigation panel).
CANCEL	Click CANCEL to begin configuring this screen afresh.

104	Chapter 13 Administrator Web Configurator Screens
VoIPon www.voipon.co.uk	sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 600030

Image 104

ZyXEL Communications P2000W manual 13.8 ToS, Introduction to DiffServ

Contents

2000WV2 Page Copyright DisclaimerTrademarks 2000WV2 User’s GuideCertifications Sales@voipon.co.uk Tel +44 01245 Fax +44 012452000WV2 User’s Guide Safety Warnings Safety WarningsZyXEL Limited Warranty Customer Support Customer SupportUnited Kingdom Page Table of Contents Chapter Network Settings 10.1 Appendix a Appendix C Page List of Figures List of Figures Prestige as a PPPoE ClientList of Tables List of Tables Preface About Your PrestigeRelated Documentation Syntax ConventionsGraphics Icons Key PrefaceFeatures QoS Quality of ServiceGetting To Know Your Prestige Dynamic Jitter BufferApplications Place a Call via SIP Proxy Server SIP Call ServerAd-Hoc Wireless Intercom Direct IP to IP CallingGetting to Know the Prestige Hardware Prestige Hardware Descriptions2000WV2 User’s Guide Prestige Hardware Descriptions Page Using the LCD Screen Menus LCD Main ScreenUsing the LCD Screen Menus Navigating the LCD Screen MenusText Input 2000WV2 User’s Guide LCD Main ScreenPress the OK key when you are done Page Wireless LAN Setup Menus Wireless LAN Setup Menus Tel +44 01245 808195 Fax +44 01245Site Survey Select Site SurveyNetwork Mode Select Wireless in the first menu screen use the up or downWireless LAN Setup Menus SsidSelect Network Mode ChannelRate WEP EncryptionAuthentication Type Select Key SelectProfiles Create Page Select IP Address Network SettingsFixed IP Select Subnet Mask Network SettingsDhcp PPPoE Select PPPoE NameClear the PPPoE password and enter your’s Select PPPoE PwdSelect Registrar Select Registrar IP SIP SettingsRegistrar Server Select Outbound Proxy SIP SettingsOutbound Proxy Server Proxy Server Select Proxy ServerUser Account Select User Account Select Phone NumberUsername Page Phonebook Calling MethodsAdding a Phonebook Entry Select Phonebook in the first menuEditing Phonebook Entries PhonebookErasing Phonebook Entries Speed Dial Phonebook Entries Select Speed DialCall History Missed CallsReceived Calls Call HistoryDialed Calls Erasing CallsSelect Erase Calls Miscellaneous Settings Tel +44 01245 808195 Fax +44 01245 Miscellaneous SettingsSetting the Ring Melody Setting the Vibration Mode Adjusting the Ring VolumeSelect Ringer Volume Miscellaneous SettingsSetting the Time Setting the DateSelect Edit Time Select Edit DateSetting the Banner Setting the Key LockSelect Settings in the first menu screen Press the Left key to save your settingSetting the Don’t Disturb Select Don’t DisturbPage Information Menus Displaying InformationSelect Firmware Ver Information MenusUsing the Phonebook to Dial a Telephone Number Using Speed Dial to Dial a Telephone NumberPrestige Usage Dialing a Telephone NumberChanging the Volume Answering a CallRejecting a Call Prestige UsageUsing the Web Configurator Screens Introduction to the Web ConfiguratorLogin AccountsNavigating the Prestige Web Configurator Using the Web Configurator ScreensWeb Configurator User Screens Summary Web Configurator Administrator Screens SummaryPage User Web Configurator Screens Device InformationIP Address Assignment Private IP Address RangesMAC Address User Web Configurator ScreensIP Address and Subnet Mask Network Configuration Static DNS ServerApply Network Configuration DhcpCancel Dhcp Network Configuration PPPoE PPPoE Network ConfigurationVoIP Introduction 12.9.1 SIPSIP Identities PPPoESIP Call Progression SIP Client ServerSIP Call Progression InviteSIP Proxy Server SIP Configuration 12.9.1.4 RTP12.11 NAT SIP ProxyNAT Example NAT TypesFull Cone NAT NAT TypesRestricted Cone NAT Full Cone NAT ExamplePort Restricted Cone NAT Symmetric NATFake WAN Address on SIP and RTP NAT and SIPSIP ALG Outbound Proxy NAT Traversal ConfigurationStun NAT Traversal Configuration ALGPhonebook Configuration PhonebookCalling Methods StunClear DeleteEdit WEP Encryption Wireless IntroductionWireless Settings Ssid WEPSubmit 12.19 S/W UpdateSystem W Update Zip files before you can upload themAdministrator Web Configurator Screens SIP Proxy Configuration Administrator Web Configurator ScreensSIP Configuration SIP URI13.3.1 G.711 2000WV2 User’s Guide SIP ConfigurationVoice Coding 13.3.2 G.729 Pstn Call Setup SignalingPhone Setting Same codec as the Prestige Quality of Service System Settings13.8 ToS Introduction to DiffServTroubleshooting Problems Starting Up the PrestigeProblems Using the Keypad Troubleshooting the Start-Up of Your PrestigeProblems Accessing the Prestige Troubleshooting Accessing the PrestigeError Message Troubleshooting Restoring the Factory Default SettingsError Message Troubleshooting DhcpPage MIC Specification TablesHardware Specifications Essid 2000WV2 User’s Guide Firmware FeaturesHTTP, TFTP, TCP, UDP, DNS, ARP, Icmp Classes of IP Addresses IP AddressingIP Classes Subnet Masks SubnettingAllowed IP Address Range By Class Natural MasksTwo Subnets Example Example Two SubnetsAlternative Subnet Mask Notation Subnet Example Four Subnets Class C Subnet Planning Example Eight SubnetsEight Subnets Subnetting With Class a and Class B Networks Class B Subnet PlanningPage Traditional Dial-up Scenario PPPoE in ActionBenefits of PPPoE How PPPoE Works Prestige as a PPPoE ClientWireless LAN Topologies Ad-hoc Wireless LAN ConfigurationESS Roaming Infrastructure WlanRequirements for Roaming Roaming Example2000WV2 User’s Guide Page Index Numerics711 24, 100 729 24, 101 IP-PBXPCM 100 130 Index Sales@voipon.co.uk Tel +44 01245 Fax +44 01245 Wlan