Digicom VOICEGATE H.323 User manual

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VOICEGATE H.323
User’s Guide
rev. 2.0 07/2006

I
VoiceGATE H.323 Index
INDEX
PREFACE - DECLARATION CE OF CONFORMITY II
1. GENERAL DESCRIPTION 1.1
1.1. DESCRIPTION 1.1
1.2. PORTSAND LEDS DESCRIPTION 1.2
1.3. DESCRIPTION OF DATAAND POWER CONNECTORS 1.3
1.4. PHONE INTERFACES 1.3
2. INSTALLATION 2.1
2.1. POWER SUPPLY 2.1
2.2. ADSL CONNECTION 2.1
2.3. LAN CONNECTION 2.1
2.4. COMPUTER CONFIGURATION 2.1
2.5. VOICEGATE H.323 CONFIGURATION 2.2
3. CONFIGURATION MENU VOICEGATE ADSL 3.1
3.1. CONFIGURATION MENU 3.1
3.1.1. STATUS 3.1
3.1.2. CONFIGURATION 3.1
3.1.2.1 WAN CONFIGURATION 3.1
3.1.2.2. LAN CONFIGURATION 3.3
3.1.2.3. VOIP 3.4
3.1.2.4. NAT 3.4
3.1.2.5. VIRTUAL SERVER 3.5
3..1.2.6. BRIDGE FILTERING 3.5
3.1.2.7. DNS 3.6
3.1.2.8. DYNAMIC DNS 3.7
3.1.3. ADMIN PRIVILEGE 3.7
3.1.3.1. ADSL CONFIGURATION 3.7
3.1.3.2. RIP CONFIGURATION 3.7
3.1.3.3. ROUTE TABLE 3.7
3.1.3.4. MISC CONFIGURATION 3.7
3.1.3.5. DIAGNOSTIC TEST 3.7
3.1.4. FIREWALL 3.8
3.1.4.1 ADVANCED OPTION 3.8
3.1.4.2. FIREWALL DATABASES 3.9
3.1.4.3. INBOUND/OUTBOUND POLICIES 3.10
4. CONFIGURATION MENU VOICEGATE ETHERNET 4.1
4.1. CONFIGURATION 4.1
4.1.1. CONFIGURATION – WAN 4.1
4.1.2. CONFIGURATION – LAN 4.2
4.1.3. VOIP 4.2
4.1.4. DNS 4.3
5. VOIP 5.1
5.1. TELEPHONY 5.1
5.2. ISDN 5.2
5.3. H.323 5.4
5.4. ADVANCED VOICE CONFIGURATION 5.5
5.5. H.450 5.6
6. VOICEGATE.EXE 6.1
6.1. ADDRESS BOOK MANAGEMENT 6.1
6.2. ADDRESS BOOK UPGRADE 6.4
A. APPENDIX A.1
A.1 MOST USED TCP/UDP PORTS A.1
A.2 LIST OF DNS SERVERS A.2

II
VoiceGATE H.323 Preface
PREFACE
All rights reserved; no part of this publication may be reproduced, stored in a retrieval system, or trasmitted in any form or
by any means, electronic, otherwise, without the prior written permission of Digicom S.p.A.The content of this booklet may
be modified without notice. Every possible care has been taken in testing and putting together all the documentation
contained in this booklet, however Digicom can not take any responsability brought by the use of this booklet.
The following installation rules should be respected in order to have the best working order of the
equipment and for the user’s safety.
ENVIROMENTAL CONDITIONS
ENVIROMENTAL TEMPERATURE from 0 to +45°CRELATIVE HUMIDITYfrom 20to80% n.c.
Rapid changes of temperature or humidity should be avoided (0,03°C/min).
This equipment, including cables, should be installed in an area free from:
Dust, humidity, heat from direct sun light.
Objects which irradiate heat. These could cause damage to the container or other problems.
Objects which produce a strong electromagnetic field (loudspeakers, etc.).
Liquids or chemical corrosive substances.
CLEANING THE TERMINAL
Use a clean and soft cloth. Wet the cloth with water or natural detergent if it is necessary to remove
any stains. Never use chemical products such as petrol or solvents.
VIBRATIONS OR DROPPING
Caution against vibrations and dropping.
DECLARATION OF CONFORMITY
We, Digicom S.p.A. registered office at: via Volta 39 - 21010 Cardano al Campo (Varese - Italy)
declare under our sole responsability that the product: Name: VoiceGate H.323 satisfies the basic
requirement of the below indicated Directive:
1999/5/CE of March 9 1999, R&TTE as having been designed in conformity with the requirements
of following Reference Standards:
EN 300 386
EN 55022
EN 60950-1
EN 41003
Disposal of out-of-date equipments
All the electrical and electronic products must be disposed as separate waste with respect
to the separate municipal collection, through specific collection systems indicated by the
local authorities.
Acrossed garbagecanonaproduct indicatesthat thisequipmentissubjectto the2002/96/CE
(WEEE) European Directive.
In case of abusive disposal of these products, sanctions are applicable.

1.1
VoiceGATE H.323 General Description
1. GENERAL DESCRIPTION
Dear Customer,
Thanks for purchasing a Digicom's product.
VoiceGATE H.323 integrates in a sole device all the functionalities
and the characteristics necessary to carry out an ADSL Internet
connection, giving the possibility of VoIP calls and protecting
your LAN from external attaks through a built-in firewall.
Requirements
 Computer with 10/100 Mbps Ethernet cards
 TCP/IP protocol installed on each computer
 Right LAN cable, RJ45 connectors on both ends
 ADSL on analog line, RJ11 connector
 Single or multiple user ADSL subscription with an ISP
 Data concerning the subscription
Package Contents
 VoiceGATE H.323
 Power supply
 User's manual on CD-Rom
 Quick configuration Guide
 RJ45-RJ45 right cable
 RJ11-RJ11 line cable
1.1. DESCRIPTION
ADSL
 Full-rate ANSI T.1413 Issue 2
 G. dmt (ITU G.992.1)
 G.hs (ITU G.994.1)
 ADSL over ISDN/U-R2
 Speed up to 8 Mbps in download and 1 Mbps in upload
 AT M Adaptation Layer Type 5 (AAL5)
 Multiple Protocol over AAL5 (RFC 2684, formerly RFC 1483)
 Bridge or routed Ethernet encapsulation
 VC and LLC multiplexing
 PPP over Ethernet (PPPoE)
 PPP over ATM (RFC 2364)
 Classical IP over ATM (RFC 1577)
 OAM F4/F5
VOIP
 H.323 protocol support ver. 4
 Codec G.711 A-law support (64 Kbps) G.711 u-law (64 Kbps) and G.729 (8 Kbps)
 Call waiting and call transfer support
 Silence suppression support, voice activity detection (VAD), comfort noise generation (CNG), caller ID, adaptative jitter
buffer

1.2
VoiceGATE H.323 General Description
LAN
 4 LAN ports 10/100 Mbps
 MDI/MDI-X function
 DHCP Server
 NAT
 Static routing
 RIP 1/2
 DDNS support (Dynamic Domain Name Server)
 Virtual Server
 DMZ
 SNTP
 DNS
FIREWALL
 DoS attacks protection and IP Spoofing, Land Attack, Ping of Death, TCP Syn Flooding, etc.
 Packet Filtering (Port, Source IP, Destination IP, MAC address)
1.2. PORTS AND LEDS DESCRIPTION
LED
PWR ON VoiceGATE H.323 powered
Line ON Telephone line configurated and registered
Blinking Telephone line has been engaged
LAN ON LAN connection enabled
Blinking Data activity on the LAN port
Green or orange led for the MDI and MDI-X functionality
ADSL ON ADSL connection established
Blinking ADSL connection disabled
NOTE: Over the leds there is a hole to enable the reset button (factory settings recovery).

1.3
VoiceGATE H.323 General Description
1.3. DESCRIPTION OF DATA AND POWER CONNECTORS
ADSL: RJ11 connector for ADSL line
WAN/LAN4 :10/100 Mbps Ethernet port (Ethernet version only)
LAN1-3:10/100 Mbps port (MDI-X)
Porta USB:USB port for connection of computer with no Ethernet cards
1.4. PHONE INTERFACES
Line1-4:RJ11 connectors (FXS) for PSTN analog device
BRI:RJ45 connectors (FXS) for ISDN phone
USB port
(Serial port option) Power supply Power supply
ADSL
LAN2 LAN3 LAN4 LAN1 LAN2 LAN3 WAN LAN1
USB port
(Serial port option)
Line1
Line2 Line1
Line2
Line3 Line4
BRI1 BRI2

2.1
VoiceGATE H.323 Installation
2. INSTALLATION
2.1. POWER SUPPLY
Power the VoiceGATE H.323 using the power supply you find into the package.
2.2. ADSL CONNECTION
Connect the ADSL line to the LINE connector.
2.3. LAN CONNECTION
Connect the computers directly to the VoiceGATE on the LAN ports, or if you have an existing LAN, connect the VoiceGATE
H.323 to a LAN Hub or Switch port through an RJ45-RJ45 cable.
2.4. COMPUTER CONFIGURATION
To access the VoiceGATE H.323 configuration you computer must be equipped with the TCP/IP protocol and a common
browser (Explorer, Firefox, Netscape…).
VoicegATE H.323 default settings are the following:
IP address: 192.168.30.1 User Name Password
Subnet Mask: 255.255.255.0 Administrator level admin voicegate
DHCP Server: Enabled User level* user voicegate
*Entering as user you can only display the VoiceGATE H.323 configuration but not modify it.
To enter the configuration menu you mut set on the computer an IP address of the same LAN of VoiceGATE H.323; you can
set the address statically or using the assignment through the DHCP Server.
Windows® XP
From the Start menu select -> Control Panel -> Network connections.
Select LAN Connection, display the Properties, select Internet Protocol (TCP/IP) and press on Properties button.

2.2
VoiceGATE H.323 Installation
If using a static IP Address insert 192.168.30.x (with x between 2 and 253), Subnet Mask 255.255.255.0 and gateway
192.168.30.1
If using a DHCP Server, set “Obtain automatically an IP Address”.
2.5. VOICEGATE H.323 CONFIGURATION
Configuration Main Guidelines:
1.The PC used for the VoiceGATE H.323 configuration must not have a proxy software or firewall. If using proxy applications,
firewall or similar, it is necessary to disable them temporarily to go on with the VoiceGATE H.323 configuration.
2. In each configuration window press Submit to confirm the new parameters.
3. To save and enable the new settings press Save & Reboot in the Save Settings / Reboot menu.
Accesso alla configurazione delVoiceGATE H.323
Open your Browser and be sure it isn't set for a proxy.
Digit the following URL http://192.168.30.1

2.3
VoiceGATE H.323 Installation
You will be asked to authenticate to enter the VoiceGATE H.323 configuration:
Insert user name “admin” and password “voicegate”.
For security reason we advise to modify the password once the configuration is over.

3.1
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
3. CONFIGURATION MENU VOICEGATE ADSL
To configurate the VoiceGATE H.323 you need all the information on your ADSL subscription. These data must be given by
the Internet Provider supplying the ADSL Internet access.
Usually these are the parameters:
 VPI / VCI (generally 8 / 35)
 Protocol type (PPP over ATM, PPP over Ethernet, RFC 1483…..)
 DNS IP Addresses used by the Provider
 Username and Password or assiged IP addresses.
3.1. CONFIGURATION MENU
The configuration page divides into 3 main menu: Status, Configuration and Admin Privilege.
3.1.1. STATUS
It is possible to verify some information on the VoiceGATE H.323 through the menu: Home, PPP and ADSL. In the Admin
Privilege menu you can display the WAN, ATM and TCP status.
3.1.2. CONFIGURATION
In the Configuration menu you can enter the configuration menu both for the Ethernet and VoIP functionalities.
3.1.2.1 WAN Configuration
The WAN configuration page allows the user to configure the ADSL subscription.
Press Submit in the Select Adapter window. The default Pvc is Pvc0. In case your ADSL subscription can manage multiple
PVC you can choose which one configure/display.

3.2
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
The values to insert depend on the type of subscription and on the configured line.
 PPPoA / PPPoE line
The lines with dynamic IP address use PPPoA or PPPoE protocols (PPPoE on request). With this kind of lines you must
authenticate with user name and password.
Virtual Circuit Section
Set Bridge at Disabled an select and select the protocol in Encapsulation (PPPoA VC-Mux or PPPoE LLC)
ATM Section
Insert VPI and VCI, if not differently indicated in the activation agreement of the ADSL line, set them at 8 and 35.
Static IP Setting
No address is necessary; these subscriptions have dynamic IP that will be assigned by the Provider at the connection.
PPP Section
Insert Username and Password supplied by the Provider for the ADSL connection.
Note:The Dynamic NAPT (default value) must be enabled in Configuration - NAT to allow the browsing of the
LAN computers.
 RFC 1483 Routed line with 1 static IP address
The lines with static IP address generally use the RFC 1483 Routed with LLC encapsulation.
Virtual Circuit Section
Set Bridge at Disabled and select the protocol in Encapsulation (1483 Routed IP LLC)
ATM Section
Insert VPI and VCI, if not differently indicated in the activation agreement of the ADSL line, set them at 8 and 35.
Static IP Setting
Insert IP Address, Subnet and Gateway assigned by the provider.
PPP Section
No data for this section
Note:The Dynamic NAPT (default value) must be enabled in Configuration - NAT to allow the LAN computers to
browse.
 RFC 1483 Routed line with more static IP addresses
Same configuration as the RFC 1483 Routed line with 1 static IP.
To use the assigned public IP addresses you must disable the NAT (Configuration -> NAT) and configure the first free IP
address in the range on the VoiceGATE H.323 LAN interface.
All the computers operating with public IP addresses must be configurated as follows:
IP: one of the assigned public IP
Subnet Mask: the Subnet associated to your public addresses
Gateway: the public address assigned to the VoiceGATE H.323 (on the LAN)
DNS: the DNS addresses supplied by the Provider

3.3
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
3.1.2.2. LAN Configuration
The LAN configuration page alows the user to set the configuration for the LAN connection.
The default LAN IP address is 192.168.30.1; user can change it to the most appropriate address for your LAN.
The computer must have addresses of the same subnet and their gateway will be the LAN IP address set in this menu.
In this menu you can also set the parameters for the DHCP Server service. If enabled the VoiceGATE H.323 will assign the
configured IP addresses to the computers requesting them. If a DHCP server is present in LAN it is possible to enable the
Relay function that will forward the requests to the address indicated in DHCP Relay Target IP.

3.4
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
3.1.2.3. VoIP
Please refer to chapter 5.
3.1.2.4. NAT
The NAT Configuration page allows the user to set the configuration for the Network Address Translation.
Dynamic NAPT: It's the default setting. It provides dynamic Network Address Translation capability between LAN and
multiple WAN connections, and the LAN traffic is routed to appropriate WAN connections based on IP address destination
and the routing tables.
NAT (Static): The NAT option only maps single WAN IP address to the local PC IP address. It is peer-to-peer mapping.
(1x1) For each WAN interface, only one local PC IP address can be associated with each WAN interface. Click the link
Session Name Configuration to add the session name for WAN interface.
NAPT (Static): The NAPT option maps the single WAN IP addresses to many local PCs IP addresses. (1xN). It is the
multiple-mapping mechanism. For each WAN Interface, more than one local PCs can be associated with one WAN Interface.
Click the link Session Name Configuration to add the session name for WAN interface.

3.5
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
3.1.2.5. Virtual Server
The Virtual Server Configuration page allows the external users to access to the internal services (Web server, FTP server,
E-mail server or News server). When the VoiceGATE H.323 receives a request (on the WAN interface) for a service whose
port has been inserted in the virtual server configuration, the request will be automatically forwarded to the specified LAN
IP address where the service is active.
For example if at 192.168.30.55 IP address an FTP service is active and it must be available also outside, you must insert
the Port 21 (FTP) and associate it to 192.168.30.55 IP address. In the TCP/UDP ports paragraph you will find a list of the
most used ports.
3..1.2.6. Bridge Filtering
The Bridge Filtering or Mac Filtering allows to define some security rules related to the MAC address.

3.6
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
3.1.2.7. DNS
It is necessary that each computer in LAN knows the DNS IP addresses.
If you don't use the VoiceGATE H.323 DHCP server, you must insert manually the DNS addresses in the Ethernet card
properties of each PC. You have two options:
1. Insert in the DNS configuration of each PC those supplied by your provider.
2. Insert in the DNS configuration of each PC the VoiceGATE LAN IP address and insert the DNS IP addresses supplied
by the provider.
In the second case each DNS query message will be sent to theVoiceGATE H.323 that thanks to the DNS Proxy feature
can automatically locate the addresses.
If your subscription uses dynamic IP addresses, use the Auto Discovery option, if you have a subscription with static IP
addresses, use the User Configuration option; in this case insert the DNS supplied by the provider in the “DNS Server” field
and verify the “Add” option is enabled then pressSubmit.
The insertion of the DNS in this window is necessary for a correct use of the Dynamic DNS service.

3.7
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
3.1.2.8. Dynamic DNS
With the Dynamic DNS service a domain name can be moved into a dynamic IP address. This allows to access some
services in LAN (web server, e-mail server or ftp server) without knowing the IP address.
To use this service it is necessary to subscribe an account with a DynDNS server and insert the data received in the
configuration window. In Host insert the registered domain name.
3.1.3. ADMIN PRIVILEGE
3.1.3.1. ADSL Configuration
This page allows the user to configure some ADSL settings. Modify this menu only if requested by your Provider or by the
Digicom Technical Support.
3.1.3.2. RIP Configuration
In this page the user can enable/disable the RIP routing protocol (default=disabled).
3.1.3.3. Route Table
The Route Table page allows the user to define some static routing showing, for a specific Destination, the gateway or the
PVC to be used.
3.1.3.4. Misc Configuration
This page allows the user to set all the Miscellaneous configurations, the configuration access mode and the DMZ option.
A DMZ (De-Militarized Zone) is added between a protected network and an external network in order to provide an
additional layer of security. When there is a suspected packet coming from WAN, the firewall will forward this packet to the
DMZ host.
3.1.3.5. Diagnostic Test
It is a useful instruments to verify the Internet connection, in case of problems it gives information to identify the fault.

3.8
VoiceGATE H.323 Configuration Menu VoiceGATE ADSL
3.1.4. FIREWALL
This allows the user to configure various firewall options. Pay attention this requires a attenzione che questo comporta una
5% loss of performances.
3.1.4.1 Advanced Option
Protection Policy
This page allows the user to define from which DOS attacks you want to protect your LAN.
Hacker Log
It allows to define which events must be indicated in the LOG file.