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Chapter 5 WAN Table 18 Network > WAN > Internet Connection (PPPoE) LABEL DESCRIPTION Metric Usually, you should keep the default value. This field is related to RIP. The metric represents the "cost of transmission". A router determines the best route for transmission by choosing a path with the lowest "cost". The smaller the metric, the lower the "cost". RIP uses hop count as the measurement of cost, where 1 is for a directly-connected network. The metric must be 1-15; if you use a value higher than 15, the routers assume the link is down. Private Usually, you should keep the default value. This field is related to RIP. This field determines whether or not the P-2024 includes the route to this remote node in its RIP broadcasts. If you select Yes, this route is not included in RIP broadcast. If you select No, the route to this remote node is propagated to other hosts through RIP broadcasts. Apply Click this to save your changes and to apply them to the P-2024. Cancel Click this to set every field in this screen to its last-saved value. 5.2.3 WAN Advanced Screen Use this screen to set up DNS servers for the WAN. To access this screen, click Network > WAN > Advanced. Figure 22 Network > WAN > Advanced Each field is described in the following table. Table 19 Network > WAN > Advanced LABEL DESCRIPTION DNS Servers DNS (Domain Name System) manages the relationships between domain names and IP addresses. Without a DNS server, you must know the IP address of the computer you want to access before you access it. First DNS Server • Select From ISP if your ISP dynamically assigns DNS server information. (In Second DNS Server this case, the ISP assigns the WAN IP address too. See Network > WAN > Internet Connection.) The field to the right is read-only, and it displays the IP address provided by your ISP. Third DNS Server • Select User-Defined if you have the IP address of a DNS server. You might get it from your ISP or from your network. Enter the IP address in the field to the right. • Select None if you do not want to use this DNS server. If you select None for all of the DNS servers, you must use IP addresses to configure the P-2024 and to access the Internet. Apply Click this to save your changes and to apply them to the P-2024. Cancel Click this to set every field in this screen to its last-saved value. P-2024 User's Guide 61

Section	Page
User’s Guide	1
About This User's Guide	3
Document Conventions	4
Safety Warnings	6
Contents Overview	9
Table of Contents	11
List of Figures	17
List of Tables	21
Introduction and Wizard	25
Introducing the P-2024	27
1.1 Overview	27
1.2 Ways to Manage the P-2024	27
1.3 Good Habits for Managing the P-2024	28
1.4 Hardware	28
1.4.1 Ports	29
1.4.2 LEDs	29
1.4.3 Console Port	29
1.4.4 Digital Signal Processor Modules	30
1.5 Resetting the P-2024	31
Introducing the Web Configurator	33
2.1 Web Configurator Overview	33
2.2 Accessing the Web Configurator	33
2.3 Web Configurator Main Screen	35
2.3.1 Title Bar	35
2.3.2 Navigation Panel	36
2.3.3 Main Window	37
2.3.4 Status Bar	37
The Connection Wizard	39
3.1 Main Wizard Screen	39
3.1.1 Welcome	40
3.1.2 System Information	40
3.1.3 ISP Parameters	41
3.1.4 Your IP Address	43
3.1.5 WAN IP Address Assignment	43
3.1.6 Finish	46
Status Screens	47
4.1 Status Screen	47
4.2 Packet Statistics Window	50
4.3 VoIP Statistics Window	51
Network	55
WAN	57
5.1 WAN Overview	57
5.1.1 PPPoE Encapsulation	57
5.1.2 WAN IP Address Assignment	57
5.1.3 DNS Server Address Assignment	58
5.2 WAN Screens	58
5.2.1 WAN Internet Connection Screen (Ethernet)	58
5.2.2 WAN Internet Connection Screen (PPPoE)	59
5.2.3 WAN Advanced Screen	61
VoIP	63
SIP	65
6.1 SIP Overview	65
6.1.1 Introduction to VoIP	65
6.1.2 Introduction to SIP	65
6.1.3 SIP Identities	65
6.1.4 SIP Call Progression	66
6.1.5 SIP Client Server	66
6.1.6 RTP	68
6.1.7 NAT and SIP	68
6.1.8 Voice Coding	70
6.1.9 PSTN Call Setup Signaling	70
6.1.10 MWI (Message Waiting Indication)	71
6.1.11 Quality of Service (QoS)	71
6.2 SIP Screens	72
6.2.1 SIP Settings Screen	72
6.2.2 Advanced SIP Setup Screen	73
6.2.3 SIP QoS Screen	77
Phone	79
7.1 Analog Phone Overview	79
7.1.1 Voice Activity Detection/Silence Suppression/Comfort Noise	79
7.1.2 Echo Cancellation	79
7.1.3 Supplementary Phone Services Overview	79
7.2 Phone Screens	82
7.2.1 Analog Phone Screen	82
7.2.2 Advanced Analog Phone Setup Screen	83
7.2.3 Common Phone Settings Screen	84
7.2.4 Phone Region Screen	85
Phone Book	87
8.1 Incoming Call Policy Screen	87
Management	91
Remote Management	93
9.1 Remote Management Overview	93
9.1.1 Remote Management Limitations	93
9.1.2 System Timeout	94
9.2 Remote Management Screens	94
9.2.1 WWW Screen	94
9.2.2 Telnet Screen	94
9.2.3 FTP Screen	95
9.3 SNMP	96
9.3.1 Supported MIBs	97
9.3.2 SNMP Traps	97
9.3.3 Configuring SNMP	97
Maintenance, Troubleshooting and Specifications	99
System	101
10.1 General System Screen	101
10.2 Dynamic DNS	102
10.2.1 Dynamic DNS Screen	102
10.3 Time Setting Overview	104
10.3.1 Pre-defined NTP Time Servers List	104
10.3.2 Synchronizing with a Time Server	105
10.3.3 Time Settings Screen	105
Logs	107
11.1 Logs Overview	107
11.1.1 Alerts	107
11.1.2 Syslog Logs	107
11.2 Logs Screens	108
11.2.1 View Log Screen	108
11.2.2 Log Settings Screen	108
11.3 Log Message Descriptions	110
Tools	115
12.1 Firmware Screen	115
12.1.1 Firmware Upload Screens	116
12.2 Configuration Screen	117
12.2.1 Restore Configuration Screens	118
12.3 Restart Screen	119
Troubleshooting	121
13.1 Power, Hardware Connections, and LEDs	121
13.2 P-2024 Access and Login	122
13.3 Internet Access	123
13.4 Phone Calls and VoIP	124
Product Specifications	129
14.1 General P-2024 Specifications	129
14.2 Telco-50 Connector Pin Assignments	131
14.2.1 P-2024 Phone Port Pin Assignments	131
14.2.2 Telco-50 Cable Connector Pin Assignments	131
14.3 Console Port Pin Assignments	132
Appendices and Index	133
Setting up Your Computer’s IP Address	135
Pop-up Windows, JavaScripts and Java Permissions	151
Rack-mount Installation	157
IP Addresses and Subnetting	159
Command Interpreter	169
NetBIOS Filter Commands	173
Internal SPTGEN	175
Legal Information	191
Customer Support	195

Match case Limit results 1 per page

Chapter 5 WAN

P-2024 User’s Guide

5.2.3

WAN Advanced Screen

Use this screen to set up DNS servers for the WAN. To access this screen, click

Network >

WAN > Advanced

Figure 22

Network > WAN > Advanced

Each field is described in the following table.

Metric

Usually, you should keep the default value. This field is related to RIP.

The metric represents the "cost of transmission". A router determines the best

route for transmission by choosing a path with the lowest "cost". The smaller the

metric, the lower the "cost". RIP uses hop count as the measurement of cost,

where 1 is for a directly-connected network. The metric must be 1-15; if you use a

value higher than 15, the routers assume the link is down.

Private

Usually, you should keep the default value. This field is related to RIP.

This field determines whether or not the P-2024 includes the route to this remote

node in its RIP broadcasts. If you select

Yes

, this route is not included in RIP

broadcast. If you select

, the route to this remote node is propagated to other

hosts through RIP broadcasts.

Apply

Click this to save your changes and to apply them to the P-2024.

Cancel

Click this to set every field in this screen to its last-saved value.

Table 18

Network > WAN > Internet Connection (PPPoE)

LABEL

DESCRIPTION

Table 19

Network > WAN > Advanced

LABEL

DESCRIPTION

DNS Servers

DNS (Domain Name System) manages the relationships between domain names

and IP addresses. Without a DNS server, you must know the IP address of the

computer you want to access before you access it.

First DNS Server

Second DNS

Server

Third DNS Server

•

Select

From ISP

if your ISP dynamically assigns DNS server information. (In

this case, the ISP assigns the WAN IP address too. See

Network > WAN >

Internet Connection

.) The field to the right is read-only, and it displays the IP

address provided by your ISP.

•

Select

User-Defined

if you have the IP address of a DNS server. You might

get it from your ISP or from your network. Enter the IP address in the field to

the right.

•

Select

None

if you do not want to use this DNS server. If you select

None

for

all of the DNS servers, you must use IP addresses to configure the P-2024

and to access the Internet.

Apply

Click this to save your changes and to apply them to the P-2024.

Cancel

Click this to set every field in this screen to its last-saved value.