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Dynamic DNS, 10.2.1 Dynamic DNS Screen

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Chapter 10 System Table 37 Maintenance > System > General LABEL DESCRIPTION Administrator Inactivity Timer Enter the number of minutes a management session can be left idle before the session times out. After it times out, you have to log in again. A value of "0" means a management session never times out, no matter how long it has been left idle. This is not recommended. Long idle timeouts may have security risks. The default is five minutes. Password Setup Old Password Enter the current password you use to access the P-2024. New Password Enter the new password for the P-2024. You can use up to 30 characters. As you type the password, the screen displays an asterisk (*) for each character you type. Retype to Confirm Type the new password again. Apply Click this to save your changes and to apply them to the P-2024. Reset Click this to set every field in this screen to its last-saved value. 10.2 Dynamic DNS 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 server or Web site on your own computer using a domain name (for instance myhost.dhs.org, where myhost is a name of your choice) that will never change instead of using an IP address that changes each time you reconnect. Your friends or relatives will always be able to call you even if they don't know your IP address. First of all, you need to have registered a dynamic DNS account with www.dyndns.org. This is for people with a dynamic IP from their ISP or DHCP server that would still like to have a domain name. The Dynamic DNS service provider will give you a password or key. Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be aliased to the same IP address as yourhost.dyndns.org. This feature is useful if you want to be able to use, for example, www.yourhost.dyndns.org and still reach your hostname. " If you have a private WAN IP address, you cannot use Dynamic DNS. 10.2.1 Dynamic DNS Screen Use this screen to set up the P-2024 as a dynamic DNS client. To access this screen, click Maintenance > System > Dynamic DNS. 102 P-2024 User's Guide

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

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Chapter 10 System

P-2024 User’s Guide

102

10.2

Dynamic DNS

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 server or Web site on your own computer using a domain name (for

instance myhost.dhs.org, where myhost is a name of your choice) that will never change

instead of using an IP address that changes each time you reconnect. Your friends or relatives

will always be able to call you even if they don't know your IP address.

First of all, you need to have registered a dynamic DNS account with www.dyndns.org. This is

for people with a dynamic IP from their ISP or DHCP server that would still like to have a

domain name. The Dynamic DNS service provider will give you a password or key.

Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be aliased to the

same IP address as yourhost.dyndns.org. This feature is useful if you want to be able to use,

for example, www.yourhost.dyndns.org and still reach your hostname.

If you have a private WAN IP address, you cannot use Dynamic DNS.

10.2.1

Dynamic DNS Screen

Use this screen to set up the P-2024 as a dynamic DNS client. To access this screen, click

Maintenance > System > Dynamic DNS

Administrator

Inactivity

Timer

Enter the number of minutes a management session can be left idle before the

session times out. After it times out, you have to log in again. A value of "0" means

a management session never times out, no matter how long it has been left idle.

This is not recommended. Long idle timeouts may have security risks. The default

is five minutes.

Password Setup

Old Password

Enter the current password you use to access the P-2024.

New

Password

Enter the new password for the P-2024. You can use up to 30 characters. As you

type the password, the screen displays an asterisk (*) for each character you type.

Retype to

Confirm

Type the new password again.

Apply

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

Reset

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

Table 37

Maintenance > System > General

LABEL

DESCRIPTION