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Chapter 17 Voice

NVG2053 User’s Guide

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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.

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.

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.

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 ([email protected] for
example) or numbers like a telephone number ([email protected]
for example).

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

[email protected]

, then

“VoIP-provider.com” is the SIP service domain.

SIP Registration

Each NVG2053 is an individual SIP User Agent (UA). To provide voice service, it
has a public IP address for SIP and RTP protocols to communicate with other
servers.

A SIP user agent has to register with the SIP registrar and must provide
information about the users it represents, as well as its current IP address (for the
routing of incoming SIP requests). After successful registration, the SIP server
knows that the users (identified by their dedicated SIP URIs) are represented by

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Содержание NVG2053

Страница 1: ...com www zyxel com NVG2053 Wireless N Gigabit VoIP Gateway Copyright 2011 ZyXEL Communications Corporation Firmware Version 1 0 Edition 1 02 2011 Default Login Details IP Address http 192 168 1 1 Pass...

Страница 2: ......

Страница 3: ...net access Support Disc Refer to the included CD for support documents Documentation Feedback Send your comments questions or suggestions to techwriters zyxel com tw Thank you The Technical Writing Te...

Страница 4: ...ces as well Customer Support Should problems arise that cannot be solved by the methods listed above you should contact your vendor If you cannot contact your vendor then contact a ZyXEL office for th...

Страница 5: ...one or more characters and then press the ENTER key Select or choose means for you to use one of the predefined choices A right angle bracket within a screen name denotes a mouse click For example Mai...

Страница 6: ...VG2053 User s Guide 6 firmware software for your device Every effort has been made to ensure that the information in this manual is accurate NVG2053 Computer Notebook computer Server Modem Firewall Te...

Страница 7: ...AC in Europe Do NOT allow anything to rest on the power adaptor or cord and do NOT place the product where anyone can walk on the power adaptor or cord Do NOT use the device if the power adaptor or co...

Страница 8: ...Safety Warnings NVG2053 User s Guide 8...

Страница 9: ...Screens 69 Monitor 75 Broadband 81 Wireless LAN 93 LAN 121 DHCP Server 125 Quality of Service QoS 131 Network Address Translation NAT 139 Dynamic DNS 145 Static Route 147 Universal Plug and Play UPnP...

Страница 10: ...Contents Overview NVG2053 User s Guide 10...

Страница 11: ...the NVG2053 25 1 6 1 Procedure to Use the Reset Button 25 Chapter 2 Tutorials 27 2 1 Overview 27 2 2 Getting Starting with the NVG2053 27 2 3 How to Make a VoIP Call 28 2 3 1 VoIP Calls With a Registe...

Страница 12: ...ireless Security No Security 56 3 5 2 Wireless Security WPA PSK WPA2 PSK 57 Chapter 4 Introducing the Web Configurator 59 4 1 Overview 59 4 2 Accessing the Web Configurator 59 4 2 1 Login Screen 60 4...

Страница 13: ...at You Need to Know 94 8 3 General Wireless LAN Screen 97 8 3 1 No Security 98 8 3 2 WEP Encryption 99 8 3 3 WPA 2 PSK 101 8 3 4 WPA 2 Authentication 102 8 4 MAC Filter 104 8 5 Wireless LAN Advanced S...

Страница 14: ...11 2 1 QoS Class Edit 134 11 3 Technical Reference 135 Chapter 12 Network Address Translation NAT 139 12 1 Overview 139 12 1 1 What You Can Do in this Chapter 140 12 2 The General NAT Screen 140 12 3...

Страница 15: ...wall Screen 162 16 4 The Services Screen 163 16 4 1 Configuring Firewall Rules 164 Chapter 17 Voice 167 17 1 Overview 167 17 1 1 What You Can Do in this Chapter 167 17 1 2 What You Need to Know 168 17...

Страница 16: ...Screen 204 19 6 The ICMP Screen 205 Chapter 20 Maintenance 207 20 1 Overview 207 20 2 What You Can Do 207 20 3 General Screen 207 Chapter 21 Password 209 21 1 Overview 209 21 1 1 What You Can Do in th...

Страница 17: ...ooting 225 27 1 Power Hardware Connections and LEDs 225 27 2 NVG2053 Access and Login 226 27 3 Internet Access 228 27 4 Resetting the NVG2053 to Its Factory Defaults 229 27 5 Wireless Router AP Troubl...

Страница 18: ...Table of Contents NVG2053 User s Guide 18...

Страница 19: ...19 PART I User s Guide...

Страница 20: ...20...

Страница 21: ...ls over the Internet The NVG2053 also supports 3G which allows you to insert a 3G wireless adapter in the USB port and use the 3G WAN connection as your WAN or a backup to enhance network reliability...

Страница 22: ...se the 3G WAN connection as a backup That means the NVG2053 switches to the 3G wireless WAN connection after the wired Ethernet WAN connection fails The NVG2053 automatically changes back to use the w...

Страница 23: ...unction on and off without opening the Web Configurator WPS Wi Fi Protected Setup button You can use the WPS button or the WPS section of the Web Configurator to set up a wireless network with your Zy...

Страница 24: ...AN Blinking The NVG2053 is sending receiving data through the wireless LAN Off The wireless LAN is not ready or has failed WAN Green On The NVG2053 has a successful 10 100 1000MB WAN connection Blinki...

Страница 25: ...had previously saved the password will be reset to 1234 and the IP address will be reset to 192 168 1 1 1 6 1 Procedure to Use the Reset Button 1 Make sure the power LED is on 2 Press the RESET button...

Страница 26: ...Chapter 1 Getting to Know Your NVG2053 NVG2053 User s Guide 26...

Страница 27: ...his User s Guide 2 2 Getting Starting with the NVG2053 This quick overview provides pointers on where in this User s Guide you can go to get started with configuring and using the NVG2053 Your NVG2053...

Страница 28: ...first have a SIP account set up with either your ISP if they provide such a service or a third party SIP provider 2 3 1 VoIP Calls With a Registered SIP Account To use a registered SIP account you sho...

Страница 29: ...nter your SIP account information 8 The NVG2053 allows you to set up multiple SIP accounts Click the Add new account button and then select SIP1 to configure the first SIP account 9 Select the name of...

Страница 30: ...P Phone to open the Phone Device screen 2 Click the Edit icon of the first entry to configure the first phone port The phone you choose corresponds to one of two phones physically connected to your NV...

Страница 31: ...the handset and hear a dial tone 4 Dial the SIP phone number you want to call 2 4 How to Set up a Secure Wireless Network You want to set up a wireless network so that you can use a notebook to access...

Страница 32: ...less settings on the NVG2053 1 Open the Network Wireless LAN General screen in the NVG2053 s web configurator Configure the screen using the provided parameters see page 32 2 Make sure the Enable opti...

Страница 33: ...Wireless LAN Advanced screen and make sure the Operating Mode is set to Mixed Click Apply 6 Open the Status screen Verify your wireless and wireless security settings under Device Information and che...

Страница 34: ...onnects to the notebook Note The wireless client must be a WPS aware device for example a WPS USB adapter or PCMCIA card There are two WPS methods to set up the wireless client settings Push Button Co...

Страница 35: ...n three seconds and release it 5 Alternatively you may log into NVG2053 s web configurator and click the Push Button in the Network Wireless LAN WPS Station screen Note Your NVG2053 has a WPS button l...

Страница 36: ...you an example of how to set up a wireless network and its security by pressing a button on both NVG2053 and wireless client Example WPS Process PBC Method Wireless Client Access Point SECURITY INFO C...

Страница 37: ...et a PIN number 2 Enter the PIN number in the PIN field in the Network Wireless LAN WPS Station screen on the NVG2053 3 Click the Start buttons or the button next to the PIN field on both the wireless...

Страница 38: ...using PIN method Example WPS Process PIN Method 2 4 3 Without WPS Use the wireless adapter s utility installed on the notebook to search for the SSID_Example SSID Then enter the DoNotStealMyWirelessN...

Страница 39: ...domain name To use this feature you have to apply for DDNS service at www dyndns org This tutorial shows you how to Registering a DDNS Account on www dyndns org Configuring DDNS on Your NVG2053 Testin...

Страница 40: ...ings in the Network Dynamic DNS screen 2a Select Enable DDNS 2b Select WWW DynDNS ORG in the Service Provider field 2c Type zyxelrouter dyndns org in the Domain Name field 2d Enter the user name UserN...

Страница 41: ...G2053 s LAN The router may be used to separate two department networks This tutorial shows how to configure a static routing rule for two network routings In the following figure router R is connected...

Страница 42: ...e IP settings To configure a static route to route traffic from N1 to N2 1 Log into the NVG2053 s Web Configurator 2 Click Configuration Network Static Route 3 Click the Add Static Route button to cre...

Страница 43: ...ceive traffic from A You may need to additionally configure B s firewall settings to allow specific traffic to pass through 2 7 How to Set Up NAT Port Forwarding You manage the Doom server on a comput...

Страница 44: ...he NVG2053 and click Apply 2 Click the Port Forwarding tab to open the following screen Click the Add Port Forward button to create a new rule 3 Configure the screen as follows to forward port 666 tra...

Страница 45: ...Mbps You want to configure a QoS class to assign the high priority queue 6 to VoIP traffic from the phone port s so that voice traffic will not get delayed when there is network congestion Traffic fro...

Страница 46: ...the MAC Address field and 192 168 1 101 in the IP Address field to have the NVG2053 always assign the IP address 192 168 1 101 to the boss s computer Click Apply 2 Click Network QoS and select the Ena...

Страница 47: ...name VoIP for example Set Priority to 6 Select From Interface and then FXS from the drop down list to group traffic coming from the phone port s on the NVG2053 Leave all other fields as the default a...

Страница 48: ...to which the boss s computer is connected WLAN in this example as he or she has a wireless connection to the NVG2053 Select Source Address and then enter the boss s IP address in the field provided Le...

Страница 49: ...net Refer to your ISP for your Internet account information Leave a field blank if you don t have that information 3 2 Accessing the Wizard Launch your web browser and type http 192 168 1 1 as the web...

Страница 50: ...three Internet connection types They are Static IP DHCP and PPPoE The wizard attempts to detect which WAN connection type you are using Figure 6 Detecting your Internet Connection Type If the wizard d...

Страница 51: ...access to high speed data networks For the service provider PPPoE offers an access and authentication method that works with existing access control systems for instance RADIUS One of the benefits of...

Страница 52: ...2053 does that part of the task Furthermore with NAT all of the LAN s computers will have Internet access Figure 8 Internet Connection Type PPPoE The following table describes the labels in this scree...

Страница 53: ...reen after clicking Next you might have selected the wrong Internet connection type Click Back make sure your Internet connection is working and select the right connection type Contact your ISP if yo...

Страница 54: ...by your ISP Subnet Mask Enter the IP subnet mask in this field Default Gateway Enter the gateway IP address in this field Primary DNS DNS Domain Name System is for mapping a domain name to its corresp...

Страница 55: ...ter the new password and retype it to confirm Click Next to proceed with the Wireless Security screen Figure 12 Router Password 3 5 Wireless Security Configure Wireless Settings Configure the wireless...

Страница 56: ...criptive name up to 32 printable 7 bit ASCII characters for the wireless LAN If you change this field on the NVG2053 make sure all wireless stations use the same SSID in order to access the network Se...

Страница 57: ...name up to 32 printable 7 bit ASCII characters for the wireless LAN If you change this field on the NVG2053 make sure all wireless stations use the same SSID in order to access the network Security m...

Страница 58: ...turn it back on If that does not work log in to the web configurator again and check you have typed all information correctly Figure 15 Congratulations You have successfully set up your NVG2053 to ope...

Страница 59: ...the Web Configurator you need to allow Web browser pop up windows from your device Web pop up blocking is enabled by default in Windows XP SP Service Pack 2 JavaScript enabled by default Java permissi...

Страница 60: ...4 2 1 1 Weather Edit You can change the temperature unit and select the location for which you want to know the weather Table 8 Login screen LABEL DESCRIPTION Language Select the language you want to...

Страница 61: ...en The following table describes the labels in this screen Note You can also edit the timezone in Section 22 2 on page 212 Table 9 Change Weather LABEL DESCRIPTION Change Unit Choose which temperature...

Страница 62: ...Administrator Inactivity Timer field expires default five minutes go to Chapter 20 on page 207 to change this Simply log back into the NVG2053 if this happens Right after you log in the Status screen...

Страница 63: ...ar B navigation panel C main window D status bar 4 3 1 Navigation Panel Use the menu items on the navigation panel to open screens to configure NVG2053 features The following tables describe each menu...

Страница 64: ...i Protected Setup and view the WPS status WPS Station Use this screen to use WPS to set up your wireless network Scheduling Use this screen to configure the times to enable or disable the wireless LAN...

Страница 65: ...iguration Use this screen to configure the NVG2053 to be managed by an ACS Auto Configuration Server Remote MGMT WWW Use this screen to configure through which interface s and from which IP address es...

Страница 66: ...er s Guide 66 4 3 2 Main Window The main window displays information and configuration fields It is discussed in the rest of this document 4 3 3 Status Bar Check the status bar when you click Apply or...

Страница 67: ...67 PART II Technical Reference...

Страница 68: ...68...

Страница 69: ...de 69 CHAPTER 5 Status Screens 5 1 Overview Use the Status screens to look at the current status of the device system resources and interfaces LAN WAN WLAN and 3G The Status screen also provides stati...

Страница 70: ...NVG2053 to update this screen Refresh Now Click this to update this screen immediately Device Information Host Name This field displays the NVG2053 system name It is used for identification Click this...

Страница 71: ...displays whether the NVG2053 acts as a DHCP server and assigns IP addresses to other computers in the LAN Enable or not Disable Click this to go to the screen where you can change it WLAN Information...

Страница 72: ...unstable and you should restart the device See Section 26 3 on page 223 or turn off the device unplug the power for a few seconds Interface Status Interface This column displays each interface the NVG...

Страница 73: ...l This field displays the model name of your 3G card 3G Card IMEI This field displays the International Mobile Equipment Number IMEI which is the serial number of the 3G wireless card IMEI is a unique...

Страница 74: ...Chapter 5 Status Screens NVG2053 User s Guide 74...

Страница 75: ...e Log Settings screen Use the Log Settings screen Section 6 3 on page 76 to configure which logs and or immediate alerts the NVG2053 is to record Use the DHCP Table screen Section 6 4 on page 77 to vi...

Страница 76: ...nitor Log Log Settings The screen appears as shown Figure 23 Monitor Log Log Settings Table 14 Monitor Log View Log LABEL DESCRIPTION Display Select a category of logs to view Select All Logs to view...

Страница 77: ...dress Host Name and MAC Address of all network clients using the NVG2053 s DHCP server Figure 24 DHCP Table The following table describes the labels in this screen 6 5 The Packet Statistics Screen Cli...

Страница 78: ...ory Usage This field specifies the percentage of memory utilization WAN Port Statistics Link Status This displays the port speed and duplex setting or Down when the line is disconnected WAN IP Address...

Страница 79: ...e following table describes the labels in this screen Up Time This is the total time the NVG2053 has been for each session Poll Interval s Enter the time interval in seconds for refreshing statistics...

Страница 80: ...Chapter 6 Monitor NVG2053 User s Guide 80...

Страница 81: ...other networks so that a computer in one location can communicate with computers in other locations Figure 27 LAN and WAN See Section 7 4 on page 90 for advanced technical information on WAN 7 1 1 Wh...

Страница 82: ...e NVG2053 tries to access the Internet If your ISP assigns you a static WAN IP address they should also assign you the subnet mask and DNS server IP address es and a gateway IP address DNS Server Addr...

Страница 83: ...he method of encapsulation used by this connection 8021p This indicates the 802 1P priority level assigned to traffic sent through this connection This field is blank when there is no priority level a...

Страница 84: ...he mode and encapsulation you choose 7 3 1 1 DHCP This screen displays when you select the Routing mode and DHCP encapsulation Figure 29 Network Broadband DHCP Encapsulation The following table descri...

Страница 85: ...Select this option to activate NAT on this connection IGMP Proxy Enable Internet Group Multicast Protocol IGMP is a network layer protocol used to establish membership in a Multicast group it is not u...

Страница 86: ...irectly on the NVG2053 rather than individual computers the computers on the LAN do not need PPPoE software installed since the NVG2053 does that part of the task Furthermore with NAT all of the LANs...

Страница 87: ...ISP give you one IP address only and you want multiple computers to share an Internet account Select Bridge when your ISP provides you more than one IP address and you want the connected computers to...

Страница 88: ...been set to be the deafult gateway through which the NVG2053 forwards the traffic DNS Server First DNS Server Second DNS Server Third DNS Server Select Obtained From ISP if your ISP dynamically assign...

Страница 89: ...escriptive name of up to 15 alphanumeric characters for this connection Mode Select Routing default from the drop down list box if your ISP give you one IP address only and you want multiple computers...

Страница 90: ...y limiting broadcasts to a smaller and more manageable logical broadcast domain In traditional switched environments all broadcast packets go to each and every individual port With VLAN all broadcasts...

Страница 91: ...ly the priority level is significant and the default VID of the ingress port is given as the VID of the frame Of the 4096 possible VIDs a VID of 0 is used to identify priority frames and value 4095 FF...

Страница 92: ...Chapter 7 Broadband NVG2053 User s Guide 92 At start up the NVG2053 queries all directly connected networks to gather group membership After that the NVG2053 periodically updates this information...

Страница 93: ...ure 32 Example of a Wireless Network The wireless network is the part in the blue circle In this wireless network devices A and B are called wireless clients The wireless clients use the access point...

Страница 94: ...o enable or disable WPS generate a security PIN Personal Identification Number and see information about the NVG2053 s WPS status Use the WPS Station Section 8 8 on page 109 screen to add a wireless c...

Страница 95: ...ents extending a network s range Traditionally a wireless network operates in one of two ways An infrastructure type of network has one or more access points and one or more wireless clients The wirel...

Страница 96: ...ttacker out Other security standards are secure in themselves but can be broken if a user does not use them properly For example the WPA PSK security standard is perfectly secure if you use a long key...

Страница 97: ...to confirm You must then change the wireless settings of your computer to match the NVG2053 s new settings Click Network Wireless LAN to open the General screen Figure 33 Network Wireless LAN General...

Страница 98: ...ailable if Auto Channel Selection is disabled Auto Channel Selection Select this option to have the NVG2053 automatically determine a channel to use Operating Channel This displays the channel the NVG...

Страница 99: ...range Figure 34 Network Wireless LAN General No Security The following table describes the labels in this screen 8 3 2 WEP Encryption Your NVG2053 allows you to configure up to four 64 bit or 128 bit...

Страница 100: ...Wireless LAN General Static WEP LABEL DESCRIPTION Security Mode Select Static WEP to enable data encryption PassPhrase Enter a Passphrase up to 26 printable characters and click Generate A passphrase...

Страница 101: ...the clients to provide the WEP key prior to communication ASCII Select this option in order to enter ASCII characters as WEP key HEX Select this option in order to enter hexadecimal characters as a WE...

Страница 102: ...TION Security Mode Select WPA PSK or WPA2 PSK to enable data encryption WPA Compatible This field appears when you choose WPA PSK2 as the Security Mode Check this field to allow wireless devices using...

Страница 103: ...tion with another AP before connecting to it Select Enabled to turn on preauthentication in WAP2 Otherwise select Disabled Authentication Server IP Address Enter the IP address of the external authent...

Страница 104: ...ery Ethernet device has a unique MAC Media Access Control address The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters for example 00 A0 C5 00 00 02 You need...

Страница 105: ...Filter Action Define the filter action for the list of MAC addresses in the MAC Filter Summary table This field is configurable only when you select Enable in the MAC Address Filter field Select Allow...

Страница 106: ...he output power of the NVG2053 to reduce interference with other APs Select one of the following 100 90 75 50 or 25 See the product specifications for more information on your NVG2053 s output power H...

Страница 107: ...able WPS view or generate a new PIN number and check current WPS status To open this screen click Network Wireless LAN WPS tab Table 29 Network Wireless LAN QoS LABEL DESCRIPTION WMM QoS Select Enable...

Страница 108: ...y settings have been changed The current wireless and wireless security settings also appear in the screen This displays Unconfigured if WPS is disabled and there are no wireless or wireless security...

Страница 109: ...uration method to add another WPS enabled wireless device within wireless range of the NVG2053 to your wireless network See Section 8 10 3 1 on page 114 Click this to start WPS aware wireless station...

Страница 110: ...s field works in conjunction with the Day and Except for the following times fields Day Select Everyday or the specific days to turn the Wireless LAN on or off If you select Everyday you can not selec...

Страница 111: ...devices are sometimes not aware of each other s presence This may cause them to send information to the AP at the same time and result in information colliding and not getting through By setting this...

Страница 112: ...eless network Furthermore there are ways for unauthorized wireless devices to get the MAC address of an authorized device Then they can use that MAC address to use the wireless network 8 10 2 3 User A...

Страница 113: ...two devices Device A only supports WEP and device B supports WEP and WPA Therefore you should set up Static WEP in the wireless network Note It is recommended that wireless networks use WPA PSK WPA o...

Страница 114: ...figuration PBC is initiated by pressing a button on each WPS enabled device and allowing them to connect automatically You do not need to enter any information Not every WPS enabled device has a physi...

Страница 115: ...ps to set up a WPS connection between an access point or wireless router referred to here as the AP and a client device using the PIN method 1 Ensure WPS is enabled on both devices 2 Access the WPS se...

Страница 116: ...ce acts as the enrollee the device that receives network and security settings The registrar creates a secure EAP Extensible Authentication Protocol tunnel and sends the network name SSID and the WPA...

Страница 117: ...e All WPS certified APs can be a registrar and so can some WPS enabled wireless clients By default a WPS devices is unconfigured This means that it is not part of an existing network and can act as ei...

Страница 118: ...work Step 1 In step 2 you add another wireless client to the network You know that Client 1 supports registrar mode but it is better to use AP1 for the WPS handshake with the new client since you must...

Страница 119: ...the WPS button on the registrar and the first enrollee for example then check that it successfully enrolled then set up the second device in the same way WPS works only with other WPS enabled devices...

Страница 120: ...this has happened WPS works between only two devices simultaneously so if another device has enrolled your device will be unable to enroll and will not have access to the network If this happens open...

Страница 121: ...ched A LAN is a computer network limited to the immediate area usually the same building or floor of a building Figure 49 LAN Example The LAN screens can help you manage IP addresses 9 2 What You Can...

Страница 122: ...eset in the factory with the following values IP address of 192 168 1 1 with subnet mask of 255 255 255 0 24 bits DHCP server enabled with 100 client IP addresses starting from 192 168 1 100 These par...

Страница 123: ...up membership After that the NVG2053 periodically updates this information IP multicasting can be enabled disabled on the NVG2053 LAN and or WAN interfaces in the Web Configurator 9 4 LAN IP Screen Us...

Страница 124: ...TION Multicast IGMP Internet Group Multicast Protocol is a network layer protocol used to establish membership in a multicast group Select IGMPv1 v2 to enable multicasting This applies to traffic rout...

Страница 125: ...anced Section 10 4 on page 126 screen to assign IP addresses on the LAN to specific individual computers based on their MAC Addresses Use the Client List Section 10 5 on page 128 screen to view curren...

Страница 126: ...nfigure the DNS server information that the NVG2053 sends to the DHCP clients Table 37 Network DHCP Server General LABEL DESCRIPTION DHCP Server Select Enable to turn on the DHCP server for LAN device...

Страница 127: ...MAC address with colons of a computer on your LAN IP Address Type the LAN IP address of a computer on your LAN DNS Server DNS Servers Assigned by DHCP Server The NVG2053 passes a DNS Domain Name Syst...

Страница 128: ...ess displays in the field to the right read only The NVG2053 tells the DHCP clients on the LAN that the NVG2053 itself is the DNS server When a computer on the LAN sends a DNS query to the NVG2053 the...

Страница 129: ...factory and consists of six pairs of hexadecimal characters for example 00 A0 C5 00 00 02 Reserve Select the check box es in each entry to have the NVG2053 always assign the selected entry ies s IP ad...

Страница 130: ...Chapter 10 DHCP Server NVG2053 User s Guide 130...

Страница 131: ...a classified traffic flow The NVG2053 assigns each packet a priority and then queues the packet accordingly Packets assigned a high priority are processed more quickly than those with low priority if...

Страница 132: ...dd edit or delete QoS classes A class groups traffic into data flows according to specific criteria such as the source address destination address source port number destination port number or incomin...

Страница 133: ...ult queue with the lowest priority Add new Class Click this button to create a new QoS class This field displays the index number of the class Status This shows whether the class is enabled or not Cla...

Страница 134: ...guration The following table describes the labels in this screen Table 41 QoS Class Configuration LABEL DESCRIPTION Class Configuration Select to enable or disable this class Class Name Enter a descri...

Страница 135: ...MAC address of the packet Destination IP Address Select the check box and enter the destination IP address in dotted decimal notation and select a source subnet mask Port Range Select the check box a...

Страница 136: ...he 802 1p DiffServ QoS is used to prioritize source to destination traffic flows All packets in the flow are given the same priority You can use CoS class of service to give different priorities to di...

Страница 137: ...ant ToS enabled network device will not conflict with the DSCP mapping The DSCP value determines the forwarding behavior the PHB Per Hop Behavior that each packet gets across the DiffServ network Base...

Страница 138: ...yer2 and Layer3 QoS Mapping PRIORITY QUEUE LAYER 2 LAYER 3 IEEE 802 1P USER PRIORITY ETHERNET PRIORITY TOS IP PRECEDENCE DSCP IP PACKET LENGTH BYTE 0 1 0 000000 1 2 2 0 0 000000 1100 3 3 1 001110 0011...

Страница 139: ...te local IP addresses to globally unique ones required for communication with hosts on other networks It replaces the original IP source address in each packet and then forwards it to the Internet The...

Страница 140: ...t number or a range of port numbers to be forwarded and the local IP address of the desired server The port number identifies a service for example web service is on port 80 and FTP on port 21 In some...

Страница 141: ...s you to define the local servers to which the incoming services will be forwarded To change your NVG2053 s port forwarding settings click Network NAT Port Forwarding The screen appears as shown Note...

Страница 142: ...ys the inside IP address of the server Modify Click the Edit icon to open a screen where you can modify an existing rule Click the Remove icon to delete a rule Apply Click Apply to save your changes b...

Страница 143: ...the first port and the last port such as 10 20 Server IP Address Type the IP address of the server on your LAN that receives packets from the port s specified in the Port field Back Click Back to retu...

Страница 144: ...Chapter 12 Network Address Translation NAT NVG2053 User s Guide 144...

Страница 145: ...To Know Dynamic DNS allows you to update your current dynamic IP address with one or many dynamic DNS services so that anyone can contact you in NetMeeting CU SeeMe etc You can also access your FTP se...

Страница 146: ...ey Enter the password you used to register for this service IP Address Update Policy Select Use WAN IP Address to have the NVG2053 update the domain name with the WAN interface s IP address Select Aut...

Страница 147: ...to the NVG2053 s LAN interface The NVG2053 routes most traffic from A to the Internet through the NVG2053 s default gateway R1 You create one static route to connect to services offered by your ISP be...

Страница 148: ...y this rule Destination This parameter specifies the IP network address of the final destination Routing is always based on network number Subent Mask This parameter specifies the IP network subnet ma...

Страница 149: ...Address This parameter specifies the IP network address of the final destination Routing is always based on network number If you need to specify a route to a single host use a subnet mask of 255 255...

Страница 150: ...Chapter 14 Static Route NVG2053 User s Guide 150...

Страница 151: ...the NVG2053 15 2 What You Need to Know Identifying UPnP Devices UPnP hardware is identified as an icon in the Network Connections folder Windows XP Each UPnP compatible device installed on your netwo...

Страница 152: ...vice joins a network it announces its presence with a multicast message For security reasons the NVG2053 allows multicast messages on the LAN only All UPnP enabled devices may communicate freely with...

Страница 153: ...Click Network and Sharing Center 3 In the Network and Sharing window set Network Discovery to On This activates the UPnP feature in Windows 7 Table 50 Advanced UPnP LABEL DESCRIPTION UPnP Select Enab...

Страница 154: ...ouble click Network Connections 3 In the Network Connections window click Advanced in the main menu and select Optional Networking Components Network Connections 4 The Windows Optional Networking Comp...

Страница 155: ...k OK to go back to the Windows Optional Networking Component Wizard window and click Next 15 5 Using UPnP in Windows XP This section shows you how to use the UPnP feature in Windows XP You must alread...

Страница 156: ...Click Start and Control Panel Double click Network Connections An icon displays under Internet Gateway 2 Right click the icon and select Properties Network Connections 3 In the Internet Connection Pr...

Страница 157: ...ngs Internet Connection Properties Advanced Settings Internet Connection Properties Advanced Settings Add 5 When the UPnP enabled device is disconnected from your computer all port mappings will be de...

Страница 158: ...n Status 15 5 2 Web Configurator Easy Access With UPnP you can access the web based configurator on the NVG2053 without finding out the IP address of the NVG2053 first This comes helpful if you do not...

Страница 159: ...ork Places under Other Places Network Connections 4 An icon with the description for each UPnP enabled device displays under Local Network 5 Right click on the icon for your NVG2053 and select Invoke...

Страница 160: ...PnP NVG2053 User s Guide 160 6 Right click on the icon for your NVG2053 and select Properties A properties window displays with basic information about the NVG2053 Network Connections My Network Place...

Страница 161: ...over the Internet using a common language called TCP IP TCP IP in turn is a set of application protocols that perform specific functions An extension number called the TCP port or UDP port identifies...

Страница 162: ...ing of how they work you might inadvertently introduce security risks to the firewall and to the protected network Make sure you test your rules after you configure them These custom rules work by com...

Страница 163: ...e to activate the firewall When the firewall is enabled the NVG2053 blocks all incoming traffic from the WAN to the LAN Create custome rules to allow certain WAN users to access your LAN or to allow t...

Страница 164: ...for example TCP port 80 defines web traffic Modify Click the Edit icon to open a screen where you can modify an existing rule Click the Remove icon to delete a rule from the NVG2053 Add Enter an inde...

Страница 165: ...the firewall rule to traffic initiating from this computer Source IP Address Enter the IP address of the computer that initializes traffic for the application or service The NVG2053 applies the firewa...

Страница 166: ...Chapter 16 Firewall NVG2053 User s Guide 166...

Страница 167: ...count screen Section 17 4 on page 172 to set up information about your SIP account configure dialing plan rules and enable certain phone functions Use the Phone Device screen Section 17 4 on page 172...

Страница 168: ...net When you set the NVG2053 to use your SIP account to make calls the NVG2053 is able to send all the information about the phone call to your service provider on the Internet Strictly speaking you d...

Страница 169: ...rovider gave you ready before you start to configure the NVG2053 17 3 The SIP Service Provider Screen Click VoIP SIP SIP Service Provider to open the SIP Service Provider screen Use this screen to con...

Страница 170: ...Address Enter the IP address or domain name of the SIP register server if your VoIP service provider gave you one Otherwise enter the same address you entered in the SIP Server Address field You can...

Страница 171: ...NVG2053 to keep it from re translating the IP address since this is already handled by the outbound proxy server Server Address Enter the IP address or domain name of the SIP outbound proxy server Ser...

Страница 172: ...ter the minimum number of seconds the NVG2053 lets a SIP session remain idle without traffic before it automatically disconnects the session When two SIP devices start a SIP session they must agree on...

Страница 173: ...s field displays a name to identify this account Service Provider This field displays the name of the service provider profile used for this account Account No This field displays the SIP number of th...

Страница 174: ...G2053 to use this account SIP Account Number Enter your SIP number In the full SIP URI this is the part before the symbol You can use up to 127 printable ASCII characters Authentication User Name Ente...

Страница 175: ...n encoding the sample s actual quantized value G 726 operates at 16 24 32 or 40 kbps G 729 is an Analysis by Synthesis AbS hybrid waveform codec It uses a filter based on information about how the hum...

Страница 176: ...NVG2053 automatically subscribes again Enable Unconditional Forward Select this if you want the NVG2053 to forward all incoming calls to the specified phone number Specify the phone number in the To N...

Страница 177: ...call This can be used for local calls in the US 9 xxx xxxxxxx means the NVG2053 automatically removes the specified prefix 9 from the number you dialed before making the call This is always used for...

Страница 178: ...k a phone port s Edit icon in the Phone Device screen Figure 75 VoIP Phone Phone Device Edit Table 58 VoIP Phone Phone Device LABEL DESCRIPTION Phone ID This is the phone port in the NVG2053 Outgoing...

Страница 179: ...ort SIP Number This field displays the SIP number of the account Common Setting Speaking Volume Control Enter the loudness that the NVG2053 uses for speech that it sends to the peer device Minimum is...

Страница 180: ...ve configured a speed dial rule you can use a shortcut the speed dial number 01 for example on your phone s keypad to call the phone number Table 60 VoIP Phone Region LABEL DESCRIPTION Country Select...

Страница 181: ...This field displays the speed dial number you should dial to use this entry Number This field displays the SIP number the NVG2053 calls when you dial the speed dial number Description This field displ...

Страница 182: ...ted to the PHONE 2 port can still be used for making PSTN calls You can also use the PSTN call through screen to specify phone numbers that should always use the regular phone service without having t...

Страница 183: ...rnet Telephony Service Provider ITSP companies provide VoIP service Table 63 VoIP PSTN Line General LABEL DESCRIPTION PSTN Line Pre fix Number Enter a prefix up to seven numbers you dial before you di...

Страница 184: ...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 SIP Number The SIP number is the part of the S...

Страница 185: ...ediately Authorization Requirements SIP registrations and subsequent SIP requests require a username and password for authorization These credentials are validated via a challenge response system usin...

Страница 186: ...rver 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...

Страница 187: ...SIP identity to IP address or domain name mapping The register server checks your user name and password when you register RTP When you make a VoIP call using SIP the RTP Real time Transport Protocol...

Страница 188: ...h an OK response confirming receipt of the BYE request and the call is terminated SIP Call Progression Through Proxy Servers Usually the SIP UAC sets up a phone call by sending a request to the SIP pr...

Страница 189: ...ble shows the SIP call progression 1 User Agent 1 sends a SIP INVITE request to Proxy 1 This message is an invitation to User Agent 2 to participate in a SIP telephone call Proxy 1 sends a response in...

Страница 190: ...NVG2053 supports the following codecs G 711 is a Pulse Code Modulation PCM waveform codec PCM measures analog signal amplitudes at regular time intervals and converts them into digital samples G 711 p...

Страница 191: ...nimum delay and the networking methods used to provide bandwidth for real time multimedia applications Type of Service ToS Network traffic can be classified by setting the ToS Type of Service values a...

Страница 192: ...er 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 alloca...

Страница 193: ...if you do not issue the sub command before the default sub command timeout 2 seconds expires or issue an invalid sub command the current operation will be aborted European Call Hold Call hold allows y...

Страница 194: ...Disconnect the first call and answer the second call Either press the flash key and press 1 or just hang up the phone and then answer the phone after it rings Put the first call on hold and answer the...

Страница 195: ...tion will be aborted USA Call Hold Call hold allows you to put a call A on hold by pressing the flash key If you have another call press the flash key to switch back and forth between caller A and B b...

Страница 196: ...to someone party A press the flash key to put the caller on hold and get a dial tone 2 Dial a phone number directly to make another call to party B 3 When party B answers the second call press the fl...

Страница 197: ...N or a backup when the wired WAN connection fails Figure 85 3G WAN Connection 18 1 1 What You Can Do in this Chapter The 3G Connection Setup screen lets you configure the 3G WAN connection Section 18...

Страница 198: ...your local ISP 18 4 The 3G Connection Setup Screen Use this screen to configure your 3G settings Click Configuration USB Service At the time of writing the 3G cards you can use in the NVG2053 are Huaw...

Страница 199: ...can enter up to 31 ASCII printable characters Spaces are allowed Dial Number Enter the phone number dial string used to dial up a connection to your service provider s base station Your ISP should pro...

Страница 200: ...Chapter 18 USB Service NVG2053 User s Guide 200...

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