DSG NAT User manual

NAT Proxy Server
Administrator
Installation and Configuration Guide
06NATPM.IX1.01a.en1

DSG, DSG logo, InterPBX, InterServer, Blaze Series, VG5000, IP580, IP500, InterClient, NAT Proxy,
and S300X are trademarks of DSG Technology. Windows and Outlook Express are trademarks of
Microsoft Inc. Other names used here are trademarks of their respective owners.
Copyright © DSG Technology Inc. All rights reserved.
7F, 222 Cheng-Te Road, Sec. 4, Taipei, Taiwan 111
Tel：886288615558
Fax：886288615557
E-mail：[e-mail]
http：//www.dsgtechnology.com

Content
3
Table of Contents
Chapter 1 Installing NAT Proxy Server .....................................................................5
Before You Start......................................................................................................6
Inatalling NAT Proxy .............................................................................................6
Installing and Configuring NAT Proxy...........................................................6
Connecting NAT Proxy via Console Port........................................................8
Chapter 2 Configuring NAT Proxy Server............................................................... 11
System Information ..............................................................................................12
InterServer Page ...................................................................................................12
Upload Pack..........................................................................................................13
Change Password .................................................................................................14
Reboot ...................................................................................................................14
Chapter 3 Settings on InterPBX System ...................................................................17
Settings on InterServer .........................................................................................18
Settings on Off-Premises Phones..........................................................................18
Settings on Off-Premises Voice Gateways ...........................................................19
System Specification....................................................................................................21
Index ............................................................................................................................22

Chapter 1 Installing NAT Proxy Server
5
Chapter 1
Installing NAT Proxy Server
Because of the lack of real IP addresses, many Internet facilities including
Blaze or Savanna Series IP PBX Communication Systems must be
installed behind NAT or firewall. When IP PBX system travels through
virtual or floating IP, sometimes the voice packets cannot traverse NAT
or firewall successfully and cause the problem of one-way or failed
phone communication.
This chapter guides you through the preparation, installation and basic
configuration of DSG NAT Proxy.

Chapter 1 Installing NAT Proxy Server
6
Before You Start
DSG NAT Proxy is an electronic product. Please follow the
recommendations below when you install or operate your system in
order to avoid any injury and damage.
Safety Recommendations
Always use ESD-preventive tools when you plug the power cord. Do not
disassemble or remove chassis cover of the system. If there is any
problem of your system, please contact our service representatives.
Environmental Prerequisites
DSG NAT Proxy needs to be installed in clean, dry, adequately ventilated
areas. The system can be placed in a control room or on a rack. Please
remain the control room in a suitable temperature and adequately
ventilated environment.
Installing NAT Proxy
Figure: NAT Proxy
Installing and Configuring NAT Proxy
1. Connecting to Power Cord
Plug one end of the power cord to the power connector on the rear panel
of NAT Proxy. Plug the other end of the power cord into a power outlet.
After you turn on the power switching on the rear panel, you can verify
the function by checking if the LED labeled “Power” is on.
2. Connecting to LAN
You need to connect NAT Proxy to your existing Ethernet network.
Connect an Ethernet cable from the “Network” RJ45 port on NAT Proxy
to any 10/100BaseT RJ45 port on a switching hub.

Chapter 1 Installing NAT Proxy Server
7
3. Preparing a Computer
Prepare a computer with web browser and be sure it is on the same
subnet as of NAT Proxy. Change the computer’s IP settings if necessary.
The suggested web browser is Internet Explorer version 5.0 or later.
The default values of NAT Proxy are as follows:
 Default IP Address: 192.168.1.1:88 (The service port is 88)
 Default Gateway: 192.168.0.254
 Default Subnet Mask: 255.255.0.0
4. Login NAT Proxy
Launch the web browser. On the address bar, type in the NAT Proxy’s
default IP address 192.168.1.1:88 to access the system. Then click on the
Login icon.
After you logged in, please input the default password “1234”, you may
change the password later.

Chapter 1 Installing NAT Proxy Server
8
The “System Information” page will be displayed on the screen as
follows.
5. Basic IP Settings
Go to Main Menu>System Information. Enter the IP address, Gateway IP,
and Subnet Mask that are assigned to your NAT Proxy. You can set the
other items later.
You may change your computer IP setting to the original values after you
complete the setup. You will need to enter the new IP address to connect
to the NAT Proxy next time.
Connecting NAT Proxy via Console Port
When you forget the IP address of the NAT Proxy, you can connect a
computer to the console port of the NAT Proxy in order to check the
current IP address, gateway address, and subnet mask.

Chapter 1 Installing NAT Proxy Server
9
1. Connect one end of the RS232 transmission line to the computer’s
COM port and the other end to the Console port of NAT Proxy.
2. Open the Hyper Terminal program. Enter the connection name and
set the baud rate to 9600 bps.
3. Turn off the power of NAT Proxy. Wait for a while and then turn on
the power again. The computer can start to connect to the
InterServer.
4. You can see the IP address from the “Hyper Terminal” page. You can
also change the IP address here. If you are going to change the IP
address, please press any key within 3 seconds to setup.
NOTE: The RS-232 DB-9 connector enclosed with the package is with pin
2/3, pin 4/6, and pin 7/8 shorted.