NetComm V422 User manual

2 V400 Series VoIP Gateway User Guide
YML832 Rev1
Contents
1. Introduction ...........................................................................................................................................4
Product Overview ...................................................................................................................................4
Items that you will need and things you will need to know.........................................................................5
NetComm V400 Series VoIP Gateway Features.........................................................................................6
Package Contents ..................................................................................................................................9
Hardware Description ...........................................................................................................................10
Front Panel ..........................................................................................................................................10
Rear Panel...........................................................................................................................................11
Restore the Gateway.............................................................................................................................12
2. Installation and Applications..................................................................................................................13
Connecting your V400 Series Gateway...................................................................................................13
Network Connections............................................................................................................................14
Telephone Connection ..........................................................................................................................18
3. Configuring the Gateway via WEB Browser.............................................................................................22
Network Settings..................................................................................................................................23
QoS Settings........................................................................................................................................28
NAT/DDNS (NAT Traversal) .................................................................................................................29
Telephony Settings ...............................................................................................................................31
SIP Settings .........................................................................................................................................34
Private Network ...................................................................................................................................38
Calling Features ...................................................................................................................................40
Advanced Options ...............................................................................................................................41
Digit Map.............................................................................................................................................47
Phone Book ........................................................................................................................................48
Speed Dial ..........................................................................................................................................49
Caller Filter ..........................................................................................................................................50
Transit Call Control ...............................................................................................................................51
Long-Distance Control Table .................................................................................................................53
Long Distance Exception Table ..............................................................................................................53
CPT/Cadence Settings ..........................................................................................................................54
Current Status and System Information..................................................................................................61
RTP Packet Summary ...........................................................................................................................63
STUN Inquiry........................................................................................................................................64
Ping Test..............................................................................................................................................65
Port Filtering ........................................................................................................................................66
IP Filtering ...........................................................................................................................................67
MAC Filtering .......................................................................................................................................68
Virtual Server .......................................................................................................................................69
DMZ....................................................................................................................................................70
URL Filter.............................................................................................................................................71

V400 Series VoIP Gateway User Guide 3
YML832 Rev1
Special Applications..............................................................................................................................72
NTP (Network Time Protocol).................................................................................................................75
System Operations (Save Settings) ........................................................................................................77
Software Upgrade.................................................................................................................................78
Logout.................................................................................................................................................79
4. Configuring the Gateway via IVR............................................................................................................80
IVR (Interactive Voice Response) ............................................................................................................81
5. Dialing and dialed number routing principle ...........................................................................................87
Instruction ...........................................................................................................................................87
Dialed Number Processing Flow ............................................................................................................87
Appendix A: Glossary...................................................................................................................................89
Appendix B: Cable Information .....................................................................................................................95
RJ-45 Network Ports ...........................................................................................................................95
Straight and crossover cable configuration ............................................................................................96
Straight-Through Cabling......................................................................................................................96
Cross-Over Cabling ..............................................................................................................................96
Appendix C: Registration and Warranty Information ......................................................................................97

4 V400 Series VoIP Gateway User Guide
YML832 Rev1
1. Introduction
Product Overview
The NetComm V400 series stand-alone VoIP Gateways carry both voice and facsimile over an IP network.
They support the SIP industry standard call control protocol to be compatible with free registration
services or VoIP service providers’ systems and they work in two different modes: UA (User Agent) or
Server. As a standard user agent, the gateways are compatible with all well-known Soft Switches and SIP
proxy servers. With optional server software, the gateways can also be configured to establish a private
VoIP network over the Internet without a 3rd party SIP Proxy Server.
Each of the V400 series VoIP gateways have of four voice ports and four ethernet ports. The voice
ports can have different combination of FXS and FXO ports; FXS ports are used to connect directly to
a telephone set and FXO ports are used to connect directly to PSTN lines. As a result there are four
models available: V431 (3 FXS ports + 1 FXO port), V422 (2 FXS ports + 2 FXO ports), V440 (4 FXS
ports) and V404 (4 FXO ports). The gateways can be seamlessly integrated into existing networks by
connecting to a phone set, PBX, key telephone system, fax machine or PSTN line. With only a broadband
connection such as an ADSL bridge/router, Cable Modem or leased line router, the gateways allow you to
gain access to voice and fax services over an IP network thereby reducing the cost of international and
long distance calls.
In addition, each gateway includes an in-built 4 port Ethernet switch which supports comprehensive
Internet gateway functions to accommodate other PCs or IP devices to share the same broadband
stream. The QoS function allows voice and data traffic to flow through at the highest priority. and with
TOS/DiffServ bit enabled, it guarantees that voice packets will have the first priority to pass through a
TOS/DiffServ enabled router.
With the support of DDNS, the gateways are reachable by a domain name where the IP address is
dynamically assigned by the ISP, thereby allowing users to host a web site or mail server in a PPPoE or
DHCP network.
Each gateway can be assigned with a fixed IP address or by DHCP, PPPoE, adopting the G.711, G.726,
G.729A or G.723.1 voice compression format to save the network bandwidth while providing real-time
and toll quality voice. In addition, in the event that the power supply fails or the Internet connection is
lost, each gateway can divert the FXS lines to the PSTN network on the FXO ports so that users can still
use their conventional PSTN line to make calls.
IMPORTANT SAFETY INSTRUCTIONS
• When using your telephone equipment, basic safety precautions should always be followed
to reduce the risk of fire, electric shock and injury to persons, including the following:
• Do not use this product near water for example, near a bathtub, washbowl, and kitchen
sink or laundry tub, in a wet basement or near a swimming pool.
• Avoid using a telephone (other than a cordless type) during an electrical storm. There
may be a remote risk of electric shock from lightning.
• Do not use the telephone to report a gas leak in the vicinity of the leak.
• Use only the power cord indicated in this manual.

V400 Series VoIP Gateway User Guide 5
YML832 Rev1
Items that you will need and things you will need to know
To correctly install and set up your VoIP Gateway you will need to ensure that the required broadband
hardware and services are setup and configured in the appropriate way to integrate this equipment.
Broadband Service
• You will need access to a high speed broadband service via a RJ 45 (Ethernet) connection to a
broadband modem.
VoIP Service
• You will need a VoIP account from your VoIP service provider. The quality of your voice service will
depend on your service provider’s network. (Note: With V400 gateways, you will be able to build your
private VoIP network but with limited voice call reachablity.)
Computer/Network
• You will need a PC or laptop with a network card and Web browsing application (for configuration
only).

6 V400 Series VoIP Gateway User Guide
YML832 Rev1
NetComm V400 Series VoIP Gateway Features
WAN
• One 10/100Mbps auto-negotiation, auto-crossover RJ-45 Ethernet port
• Support static IP, PPPoE, Bigpond Cable and DHCP address assignment and dynamic DNS (DDNS)
• QoS: IP TOS (Type of Services) and DiffServ (Differentiated Services) for both SIP signaling and RTP
• NAT Traversal : Port Forwarding, STUN, UPnP and Outbound Proxy
• NTP: (Network Time Protocol RFC 1305), Accepts up to 3 Time Server
• Time Zone Support
• MAC Address Clone
• RTP Packet Summary : packet sent, packet received, packet loss for voice quality analysis
LAN
• Four 10/100Mbps auto-negotiation, auto-crossover RJ 45 Ethernet ports
• Supports router and bridge mode (NAT mode and Non-NAT mode)
• DHCP server
Advance Firewall and DoS Protection
• NAT (Network Address Translation) and PAT (Port Address Translation)
• DMZ, Virtual Server
• Traffic Filtering based on MAC address, IP address, TCP/UDP Port number and URL string pattern
• Prevents attacks based on TCP, UDP, IP and ICMP protocols
• Prevents attacks such as SYN Flood, IP Spoofing, Ping of Death, Tear Drop, etc.
Voice Features
• SIP (RFC3261) compatible
• Voice codecs : G.711 a /ulaw, G.726, G.729A, G.723.1
• CNG (Comfort Noise Generation)
• VAD (Voice Activity Detection)
• Silence suppression/detection
• G.165/G.168 echo cancellation
• Adjustable Jitter Buffer and programmable Gain Control
• In-Band DTMF, Out-Of-Band DTMF relay (RFC2833, SIP INFO)
• Multiple SIP Proxy server entries with failover mechanism
• Polarity reversal detection (FXO/PSTN) and generation (FXS)
• T.30 (G.III) / Real time T.38 / Secured T.38 FAX relay
• DTMF, FSK (Bellcore & ETSI) Caller ID detection and generation.
• Support Caller ID Restriction (CLIR)
• FXO hang up detection : Busy Tone cadence auto learning/detection*
• Support VoIP-to-PSTN (transit out) / PSTN-to-VoIP (transit in) applications*
• Digit Map for dial plan

V400 Series VoIP Gateway User Guide 7
YML832 Rev1
• Speed Dial
• Local phone book for peer-to-peer calling
• E.164 Numbering & ENUM support
• Hot-Line, Warm-Line support
• Single Number / Account (reprehensive number) for multiple ports
• Group Hunting function
• Recordable greeting message
• Proprietary server and protocol enables small businesses to build private VoIP network; and use
standard SIP network as same time – for dual network support
• Supplementary call features**:
o Call Hold, Call Waiting, Call Pickup
o Call Forward - Unconditional, Busy, No Answer
o Call Transfer - Unattended, Attended
o Three Way Calling (Media Server required)
• Failsafe mechanism :
o Network failure
o Service unavailable
o Power loss
• Analogue interface
o Connector : RJ-11
o Signaling protocol : Loop Start
Configuration & Maintenance
• Configuration methods:
o Web
o IVR
o Telnet
• Status reports:
o Port status
o Registration status
o Ping tests
o STUN/UPnP status
o Hardware / software information
• Firmware Upgrade through TFTP, FTP and proprietary image server
• Configuration Backup/Restore
• Reset button (with restore factory default function)
• Front Panel LED : voice ports, WAN, LAN1~4, Run, Power, Alarm
• Optional Auto Provisioning Server (APS) for mass deployment
• SNMP V1 / V2c (optional)

8 V400 Series VoIP Gateway User Guide
YML832 Rev1
General Specifications
• Power Adaptor : AC 100V~240V 50/60Hz input, DC 12V output
• Temperature : Operation 0 °C ~ 45 °C
• Storage -25 °C ~ 75 °C
• Humidity : up to 90% RH, non-condensing
• Dimension (W/D/H) All models: 202 x 172 x 35 mm
• Weight All models: 0.43Kg
Note*: Features are only available in models which have FXO ports.
Note**: The availability of these features may depend on your VoIP service provider’s
network

V400 Series VoIP Gateway User Guide 9
YML832 Rev1
Package Contents
Your V400 Series VoIP Gateway package includes the following items:
• One of the V400 Series VoIP Gateways; the V440, V422, V431 or V404
• One Ethernet Cable
• One RJ11 Line Cord
• One Power Adaptor
• One CD with User Guide
If any of the above items are damaged or missing please contact NetComm immediately.

10 V400 Series VoIP Gateway User Guide
YML832 Rev1
Hardware Description
Front Panel
• Power Indicator: Green light indicates a normal power supply.
• Run Indicator: Blinking green light indicates normal operation.
• Alarm Indicator: When the system starts up, the red light will blink. It also indicates abnormal
gateway behaviour.
• P1 – P4 stands for Port 1 – Port 4 (Line 1 – Line 4)
• WAN stands for the WAN Port Indicator.
• L1 – L4 stands for the LAN Port Indicator.
When starting up the system, the Alarm, Run, and Power indicators will light up.
After approximately 15 seconds, the Alarm indicator will go off, the Run indicator
will blink green, and the Power indicator will stay green under operational
conditions. If the Alarm indicator continues to blink, it means the system is
currently communicating with the ISP and has yet to obtain an IP address.
When the WAN is connected, the WAN indicator will light up green and if data is
being transmitted over the Internet, the indicator blinks green and orange.

V400 Series VoIP Gateway User Guide 11
YML832 Rev1
Rear Panel
V440 (4 FXS ports) Phone1-Phone4 are telephone ports (FXS) to be connected
to telephone sets or PBX CO ports.
V404 (4 FXO ports) Line1-Line4 are line ports (FXO) to be connected to PSTN
(telephone lines from PSTN network.)
V422 (2 FXS + 2 FXO ports) Phone1-Phone2 are telephone ports (FXS), and Line1-Line2
are line ports (FXO). Before the power is connected or in the
event of a power failure, Phone1 will be relayed to Line1,
and Phone2 to Line2 to reach the PSTN network.
V431 (3 FXS + 1 FXO ports) Phone1-Phone3 are telephone ports (FXS), and Line1 is
a line port (FXO). Before the power is connected or in the
occasion of a power failure, Phone1 will be relayed to Line1
so that voice service is still available for Phone1.

12 V400 Series VoIP Gateway User Guide
YML832 Rev1
NOTE: Do not connect FXS ports to each other. Also, do not connect any FXS port
directly to a PSTN line or internal PBX. Doing so may damage VoIP gateway.
Restore the Gateway
To restore the gateway to its factory default setings (IP address, Username and Password only):
(1) Disconnect the power plug.
(2) Press reset (do not let go of the reset button).
(3) Connect the power plug back into the socket (do not let go of the reset button).
(4) Let go of the reset button after 6 seconds. The default IP address and username/password for web
login will be restored.
NOTE: This reset action only resets the gateway IP and username/password
settings. Other settings still remain in the gateway’s flash memory. A complete
hardware reset can be done through the gateway’s IVR system and Web
configuration interface.

V400 Series VoIP Gateway User Guide 13
YML832 Rev1
2. Installation and Applications
Connecting your V400 Series Gateway
1. Connect the WAN port of your V400 Series VoIP Gateway to your Broadband Modem using an
ethernet cable.
2. Connect the power adapter to your V400 Series VoIP Gateway and plug it into a powerpoint.
Please use the power adapter that comes with VoIP gateway. Using an adapter
other than the one supplied with the VoIP gateway, may cause problems and will
affect the warranty of the product.
3. Connect the Phone or PSTN lines as required to setup your V400 Series VoIP Gateway. The way
you setup the lines will depend on the model you have purchased. Refer to the following sections
on both Network Connections and Telephone Connections for more information on the possible
applications of your V400 Series VoIP Gateway.
Once you have connected your gateway you can configure it using one of the two configuration options
provided:
1) Web Interface
2) Telephone IVR (Interactive Voice Response)
The IVR provides basic query and configuration, while the Web interface provides a full configuration.

14 V400 Series VoIP Gateway User Guide
YML832 Rev1
Network Connections
Possible network connections are divided into 3 basic modes as described below:
• Gateway can be assigned with a Public IP Address
• Gateway can be installed under the existing NAT
• Gateway can be assigned with a Public IP address and serve as an IP sharing router.
Gateway Assigned with a Public IP Address
The VoIP gateway will have a Public IP address for its Internet connection regardless of whether it is a
static IP address, DHCP (using a Cable Modem), or PPPoE (Dialup / ADSL).
The following diagram shows a typical network connection in which broadband devices, such as an ADSL
router or Cable modem, need to work in bridged mode so that the gateway is able to obtain a public IP
address either through PPPoE, DHCP or static IP.
Gateway IP Settings Need to be set up as static IP, DHCP, or PPPoE
NAT/STUN Settings Unnecessary (Disabled)
DDNS Settings Unnecessary (Disabled)

V400 Series VoIP Gateway User Guide 15
YML832 Rev1
Gateway behind a NAT/Firewall Network
The VoIP gateway uses a private IP address and the Internet sharing function of other systems to connect
to the Internet.
The following diagram shows a typical network connection in which broadband devices such as an
ADSL router work in router (NAT) mode so that the gateway is behind a NAT/Firewall. In this case, the
broadband router (NAT/Firewall) and the gateway need to be configured correctly in order to allow the
gateway to communicate with the Internet and VoIP network properly, using different techniques to
traverse the NAT/Firewall.
The table shown on the next page lists possible solutions for different network scenarios.

16 V400 Series VoIP Gateway User Guide
YML832 Rev1
LAN IP address of Internet sharing Please avoid IP address 192.168.8.1-192.168.8.254 (You may need to
change the settings of Internet sharing device or change V400 series gateway
LAN Port IP address)
WAN IP of V400 series gateway Set as a static private IP address or DHCP; when the WAN port is set as a
static private IP, assign the LAN IP address of the Internet sharing to as default
gateway IP of V400 series gateway; When the WAN IP is set as DHCP, please
make sure you have DHCP server running in network to issue an IP to the
V400 gateway.
NAT Traversal
There are three ways to configure
V400 gateway to traversing NAT in
Internet sharing devices. For details,
please refer to page 29.
NAT Public IP If the WAN of the IP sharing device has a static public IP
address, then the “NAT IP/Domain” address is set as the
Public IP address of the Internet sharing devices.
If the WAN of the Internet sharing device uses a dynamic
public IP address and you specify a domain name in “NAT
IP/Domain” field, which has to comply with the DDNS
settings.
Note: you also need to forward specific ports on the NAT
router to the WAN port of the V400 gateway.
STUN client
Enable STUN client will avoid problems of configuring port
forwarding in the Internet sharing device, but some NAT
routers do not support STUN.
UPnP Control
point
Using UPnP to enable the V400 gateway to pass through
NAT of Internet sharing device. This function only works
when the Internet sharing devices support UPnP and has
it enabled.
DDNS Settings
For details, please refer to page 29
for the DDNS Settings
The WAN of the Internet sharing device
has a static public IP address.
(Unnecessary) Disabled
The WAN of the Internet sharing device
has a dynamic IP address.
Enabled: enter the registered
URL (Uniform Resource Locator)
and DDNS server info into
corresponding areas.

V400 Series VoIP Gateway User Guide 17
YML832 Rev1
Gateway Assigned with a Public IP Address and Serving as an Internet Sharing Device
The VoIP gateway will have a Public IP address, regardless of whether it is the public IP from a static
setting, DHCP (using a Cable Modem), or PPPoE (to connect to your ADSL account), and can use the
built-in Internet sharing functions to allow other PCs attached to V400 gateway LAN ports to share the
Internet connection. The network connection is shown in following diagram.
Gateway IP Settings Needs to be set up as either in static IP, DHCP, or PPPoE
NAT/STUN Settings Unnecessary (Disabled)
DDNS Settings Unnecessary (Disabled)
DHCP service for PCs, please refer to page
24 for the gateway DHCP server settings
Default private IP addresses of the gateway LAN ranging
from: 192.168.8.1-192.168.8.253
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.8.254
PC can be set either in DHCP or static IP mode

18 V400 Series VoIP Gateway User Guide
YML832 Rev1
Telephone Connection
Example for V440 gateway
V440 gateway connecting directly to phone sets
After connecting telephone sets to Phone1-Phone4, users can make direct calls (Phone1-Phone4 are
FXS interfaces). Each set acts as an independent extension line.
Integrating the V440 with PBX
Phone1-Phone4 are FXS interfaces, and some of them can be connected to telephone sets for direct
calls. Others can be connected to the PBX CO lines so that other extension lines can make VoIP calls.

V400 Series VoIP Gateway User Guide 19
YML832 Rev1
Example for V404 gateway
V404 model connecting directly to the Telephone Line of a PSTN
Line1-Line4 are FXO interfaces and can all be connected to a PSTN to serve as a bridge between the
PSTN and VoIP network.
Integrating the V404 with PBX
Line1-Line4 are FXO interfaces and can be connected with PBX extension lines (this is exclusively for an
analog interface, and is not applicable for a digital interface).

20 V400 Series VoIP Gateway User Guide
YML832 Rev1
Example for V422 gateway
Phone1-Phone2 are FXS interfaces and can be directly connected to telephone sets for direct calls.
Line1-Line2 are FXO interfaces and can be connected to PSTN lines to serve as a bridge between the
PSTN and other VoIP telephones. The system also allows a call to be made from a traditional telephone
line to connect with a user behind the V422.
Integrating the V422 with PBX
Phone1-Phone2 are FXS interfaces and can be connected to PBX CO lines; Line1-Line2 are FXO
interfaces and can be connected to a PSTN to act as a bridge between the PSTN and other VoIP
telephones. The system also allows a call to be made from a traditional telephone line to connect with a
user behind the V422.