Connection Technology Systems VRG-21412-WF-G SERIES User manual

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VRG-21412-WF-G SERIES
4-PORT 10/100BASE-TX LAN, 2-PORT FXS and 1-PORT
100BASE-FX WAN with 802.11 b/g WLAN VoIP RESIDENTIAL
GATEWAY
VRG-21412-WF-G-RF SERIES
4-PORT 10/100BASE-TX LAN, 2-PORT FXS and 1-PORT
100BASE-FX WAN with 802.11 b/g WLAN VoIP RESIDENTIAL
GATEWAY AND CATV RF RECEIVER
Network Management
User’s Manual
Version: 0.91

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Trademarks
Contents subject to revise without prior notice.
All other trademarks remain the property of their owners.
Trademarks
CTS is a registered trademark of Connection Technology Systems Inc.
Contents subject to revise without prior notice.
All other trademarks remain the property of their owners.
Copyright Statement
Copyright © 2010 Connection Technology Systems Inc.
This publication may not be reproduced as a whole or in part, in any way whatsoever unless prior consent has been
obtained from Connection Technology Systems Inc.
FCC Warning
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limitations are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates uses and can radiate radio frequency energy and, if no installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into a different outlet from that the receiver is connected.
Consult your local distributors or an experienced radio/TV technician for help.
Shielded interface cables must be used in order to comply with emission limits.
Changes or modifications to the equipment, which are not approved by the party responsible for compliance, could affect
the user’s authority to operate the equipment.
Copyright © 2010 All Rights Reserved.
Company has an on-going policy of upgrading its products and it may be possible that information in this document is not
up-to-date. Please check with your local distributors for the latest information. No part of this document can be copied or
reproduced in any form without written consent from the company.
Trademarks:
All trade names and trademarks are the properties of their respective companies.

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Revision History
Manual Version
Modification
Firmware Version
Date
0.91
The initial version
0.99.41
2010/02
Note: This User’s Manual is written or revised according to the officially-released Firmware version.
The content of this Manual is subject to change without prior notice.

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Table of Contents
1. INTRODUCTION ............................................................................................................... 6
1.1 Front, Rear and Top-Front Panel.................................................................................. 7
1.2 Management Options ................................................................................................... 8
1.3 Interface Description .................................................................................................... 8
1.4 Connecting the WLAN VoIP Residential Gateway........................................................ 9
1.5 RF over Fiber (With RF Receiver only) ........................................................................ 9
1.6 LED Descriptions........................................................................................................ 10
2. WEB MANAGEMENT ..................................................................................................... 11
2.1 The Concept of IP address......................................................................................... 11
2.2 Start Configuring......................................................................................................... 11
2.3 Information ................................................................................................................. 14
2.3.1 System Information.............................................................................................. 14
2.3.2 Line Status........................................................................................................... 17
2.3.3 CDR..................................................................................................................... 17
2.3.4 Syslog Table ........................................................................................................ 18
2.4 Network Management ................................................................................................ 19
2.4.1 WAN Settings ...................................................................................................... 19
2.4.2 LAN Settings........................................................................................................ 22
2.4.3 WLAN Settings .................................................................................................... 24
2.4.4 WLAN Access Policy ........................................................................................... 28
2.4.5 Static Route ......................................................................................................... 29
2.4.6 NAT...................................................................................................................... 30
2.4.7 Packet Filter......................................................................................................... 32
2.4.8 URL Filter............................................................................................................. 33
2.4.9 UPnP ................................................................................................................... 34
2.4.10 DDNS ................................................................................................................ 35
2.4.11 SNMP................................................................................................................. 35
2.5 Switch Management................................................................................................... 36
2.5.1 Port Configuration................................................................................................ 36
2.5.2 Bandwidth Configuration...................................................................................... 37
2.5.2.1 Egress Bandwidth Control............................................................................. 37
2.5.2.1.1 By port .................................................................................................... 37

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2.5.2.1.2 By TOS ................................................................................................... 38
2.5.2.1.3 By 802.1p ............................................................................................... 38
2.5.2.1.4 By Application ......................................................................................... 39
2.5.2.2 Ingress Bandwidth Setting............................................................................. 40
2.5.3 Configure VLAN................................................................................................... 41
2.5.4 IGMP Control ....................................................................................................... 42
2.6 Switch Monitor............................................................................................................ 43
2.7 SIP Management........................................................................................................ 44
2.7.1 Basic Setting........................................................................................................ 44
2.7.2 Account Setting.................................................................................................... 45
2.7.3 Server Setting...................................................................................................... 46
2.8 VoIP Management...................................................................................................... 47
2.8.1 Voice Setting........................................................................................................ 47
2.8.2 Call Service ......................................................................................................... 49
2.8.3 FXS Port Setting .................................................................................................. 50
2.8.4 FAX Setting.......................................................................................................... 52
2.8.5 General Dialing Setting........................................................................................ 52
2.8.6 Phone Book ......................................................................................................... 54
2.8.7 Dialing Plan ......................................................................................................... 55
2.9 CATV Setting (Only available for RF module) ............................................................ 56
2.10 Management ............................................................................................................ 56
2.10.1 Administrator Account ........................................................................................ 56
2.10.2 System Log........................................................................................................ 57
2.10.3 Date / Time ........................................................................................................ 58
2.10.4 Ping Test ............................................................................................................ 59
2.10.5 Save / Restore................................................................................................... 59
2.10.6 Factory Default .................................................................................................. 60
2.10.7 Firmware Upgrade ............................................................................................. 60
2.11 Save & Logout .......................................................................................................... 61
3. SNMP NETWORK MANAGEMENT ................................................................................ 62
APPENDIX A....................................................................................................................... 63

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1. INTRODUCTION
Thank you for purchasing the WLAN VoIP Residential Gateway which is designed to aim at
FTTX applications. This WLAN VoIP Residential Gateway provides four TP ports for LAN
applications, one fiber optic or TP port for WAN, two sets of FXS telephony ports and built-in
IEEE 802.11b/g wireless LAN (To use CATV application, please purchase the WLAN VoIP
Residential Gateway with RF module installed). The combination of wireless and VoIP
function provides users not only more flexible ways to enjoy bandwidth-intensive services
but also more secure internetwork connections by implementing access control policies.
The wireless function of this Gateway conforms to IEEE 802.11b/g standards that can
provide speed rate up to 54Mbps when used with other 802.11g wireless products. To
enhance wireless connections to reach further, the detachable SMA antenna, dispersing the
same amount of power in all directions, can be used to receive and deliver stable and high-
gain transmissions. The WLAN VoIP Residential Gateway also supports WPA/WPA2
authentication methods and 64/128-bit data encryption to implement strict security
protection so as to prevent your wireless networks from unauthorized uses or possible
malicious attacks. Other security mechanisms provided that can protect your network
including the uses of disabling SSID broadcast function, MAC filtering, URL filtering, DDoS
protection.
For VoIP applications, the internationally recognized standards, SIP (Session Initiation
Protocol), have been employed to manage multimedia communication sessions so that
users can use traditional analog telephones to make telephone calls to IP telephones over
the Internet. Calls received from IP telephones work exactly the same as you would expect
from the traditional telephone service. Other WLAN VoIP Residential Gateway’s features are:
Voice Activity Detection (VAD) / Silence Suppression which reduces the bandwidth that a
call uses by not transmitting when you are not speaking; Comfort Noise Generation that is
the background noise the device generates to fill moments of silence when the other device
in a call stops transmitting because the other party is not speaking (as total silence could
easily be mistaken for a lost connection); Echo Cancellation which is WLAN VoIP
Residential Gateway’s supporting G.168, an ITU-T standard for eliminating the echo caused
by the sound of your voice reverberating in the telephone receiver while you talk.
The WLAN VoIP Residential Gateway is mainly dedicated to the FTTX broadband service
providers who look for a way of delivering multiple IP services to the home users. The fiber
optic port supports a connection distance of from 2KM to 20KM, or more than 100KM by
multi-mode optical fiber, single-mode optical fiber (SMF), or bi-direction SMF which can be
used for apartment, house, or campus. To easily manage and maintain the device,
advanced network settings are configurable via Web-based Management such as Firmware
upgrade. The featured NAT and DHCP server functions also allow you to use a hub or
switch to establish a private network depending on your personal needs that allows multiple
computers to share a single Internet connection.

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1.1 Front, Rear and Top-Front Panel
Figure 1-1~1-4 are the front, rear and top views of WLAN VoIP Residential Gateway (VRG)
device:
Fig. 1-1 Front Panel Fig. 1-2 Rear Panel
Fig. 1-3 Front Top Panel with Cover Opened Fig. 1-4 Front Top Panel with Cover Closed
Figure 2-1 ~ 2-3 are the front, rear and top views of WLAN VRG device with RF module.
Fig.2-1 Front Panel Fig. 2-2 Rear Panel
Fig. 2-3 Top Front Panel with Cover Opened
RF port for TV
LED
Fiber Connector
Diag. Button
Power
RJ-11 Connectors (Phone)
RJ-45 Connectors
RJ-11Connectors (Phone)
RJ-45 Connectors
Power
Diag. Button
LED WAN, SATUS, POWER
LED: TV/RF Output, RF Fiber Link, Power
Ethernet Optic Port
CATV Optic Port

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1.2 Management Options
Management options available in this WLAN VoIP Residential Gateway are listed below:
Web Management
Web Management is of course done over the network. Once the WLAN VoIP
Residential Gateway is on the network, you can login and monitor the status remotely
or locally by a web browser. Local console-type Web management, especially for the
first time use of WLAN VoIP Residential Gateway to set up the needed IP, can also
be done through any of the four 10/100Base-TX 8-pin RJ-45 ports located at the front
panel of the WLAN VoIP Residential Gateway. Direct RJ45 LAN cable connection
between a PC and WLAN VoIP Residential Gateway is required for this.
SNMP Management (See 3. SNMP Management for detailed descriptions.)
1.3 Interface Description
Before you start to configure your device, it is very important that the proper cables with the
correct pin arrangement are used when connecting the WLAN VoIP Residential Gateway to
other devices such as switch, hub, workstation, etc. The following describes correct cables
for each interface type.
WAN 100Base-FX Fiber Port
1x100Base-FX Fiber port is located within the upper-left corner of the front top of the
WLAN VoIP Residential Gateway. This port is primarily used for up-link connection
and will always operate at 100M/Full Duplex mode. Duplex SC or WDM Simplex SC
types of connectors are available. Use proper multimode or single-mode optical fiber
to connect this port with other Fast Ethernet Fiber port.
LAN 10/100Base-TX RJ-45 Ports
4x10/100Base-TX 8-pin RJ-45 ports are located at the front of the WLAN VoIP
Residential Gateway. These RJ-45 ports allow user to connect their traditional copper
based Ethernet/Fast Ethernet devices into network. All these ports support auto-
negotiation and MDI/MDIX auto-crossover, i.e. either crossover or straight through
CAT-5 cable may be used.
Since there is no separated RJ-45 Management Console port for this WLAN VoIP
Residential Gateway, however any of these four 10/100Base-TX RJ-45 ports can be
used temporarily as the RJ-45 Management Console Port for local management. This
temporary RJ-45 Management Console Port of the WLAN VoIP Residential Gateway
and a RJ-45 LAN cable for PC connections are required to connect the WLAN VoIP
Residential Gateway and a PC. Through these, the user then can configure and
check the WLAN VoIP Residential Gateway even when the network is down.

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FXS RJ-11 Telephony ports
There are two FXS RJ-11 telephony ports at the front panel of the WLAN VoIP
Residential Gateway. The “Phone”ports are for users to connect their traditional
telephones.
1.4 Connecting the WLAN VoIP Residential Gateway
Before starting to configure the WLAN VoIP Residential Gateway, you have to connect your
devices correctly. When you connect your device correctly, the corresponding LEDs will light
up.
Connect the power adaptor to the power port of the WLAN VoIP Residential Gateway
on the back, and the other end into a wall outlet. The Power LED should be ON.
The system starts to initiate. After completing the system test, the Status LED will light
up.
CAUTION: Connect one end of an Ethernet patch cable (RJ-45) to LAN 2 port of
WLAN VoIP Residential Gateway. Connect the other end of the patch cable (RJ-45)
to the Ethernet port on Administrator computer for first-time configuration. LED for
LAN 2 port on the front panel will light up.
Connect one end of an Ethernet patch cable (RJ-45) to other LAN ports of WLAN
VoIP Residential Gateway. Connect the other end of the patch cable (RJ-45) to the
Ethernet port on other computers or Ethernet devices to form a small area network.
The LAN LED for that port on the front panel will light up.
Connect the Fiber cable provided from service provider to the WAN Fiber port on the
back panel, the WAN LED will light up and blinking if data are transmitting.
Connect telephone sets to the Phone ports of the WLAN VoIP Residential Gateway.
1.5 RF over Fiber (With RF Receiver only)
Fiber Optic RF Receiver with SC/APC connector is located within the upper-left corner of the
top-front of the WLAN VoIP Residential Gateway. This port is primarily used for CATV RF
link connection and will operate at output level greater than 24dBmV@-5dBm of optical
input with 77 NTSC or 60 PAL channels of loading. Use proper RF optical fiber to connect
this port with other fiber port at the CATV head end. Also use TV Coaxial Cable to connect
the TV with the TV coaxial cable female connector located in the front of the VoIP
Residential Gateway. There are three LEDs beside the TV coaxial cable connector to
indicate the status of TV/RF Output, RF Fiber Link status, and Power status respectively.
See below for CATV LED descriptions.

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1.6 LED Descriptions
Model
LED
Color
Operation
VoIP
Residential
Gateway
Power
Off
Power is off.
Green
Power is functioning in normal operation.
WAN
Orange
Fiber port link is off.
Green
Fiber port link is up.
STATUS
Green
System is ready.
Orange
System is not ready.
Orange
blinking
Reset to default setting (After pressing Diag. button
for 10 seconds)
Link/ACT
Off
Copper port link is off.
Green
Copper port link is up.
Blinking when traffic is present.
Speed
Off
Copper port link is off or link is in 10Mbps.
Green
Copper port link is in 100Mbps.
Phone
Green
When the receiver is picked up.
Blinking when incoming calls are received.
With RF
Module
Installed
Power
Off
System 12V DC power is down/off.
Green
System 12V DC power is ready.
Fiber port
Off
Lights off if the Fiber link is down because optical
input power is < -8 dBm.
Green
Lights on if the Fiber link is up with optical input
power > -8 dBm.
TV (RF)
port
Off
Lights off when RF output is being shut off (or
failed).
Orange
Lights on when RF output is normal.

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2. WEB MANAGEMENT
This chapter describes how to manage the WLAN VoIP Residential Gateway through a web
browser. The IP address concepts and gaining access to the WLAN VoIP Residential
Gateway will be introduced first, and then followed by web-based management instructions.
2.1 The Concept of IP address
IP addresses have the format n.n.n.n, for example 168.168.8.100.
IP addresses are made up of two parts:
The first part (168.168 in the example) refers as network address identifies the
network on which the device resides. Network addresses are assigned by three
allocation organizations. Depending on your location, each allocation organization
assigns a globally unique network number to each network that wishes to connect to
the Internet.
The second part (8.100 in the example) identifies the device within the network.
Assigning unique device numbers is your responsibility. If you are unsure of the IP
addresses allocated to you, consult the allocation organization from which your IP
addresses were obtained.
Remember that no two devices on a network can have the same address. If you connect to
the outside world, you must change all the arbitrary IP addresses to comply with those you
have been allocated by the allocation organization. If you do not do this, your outside
communications will not operate.
A subnet mask is a filtering system for IP addresses. It allows you to further subdivide your
network. You must use the proper subnet mask for proper operation of a network with
subnets defined.
2.2 Start Configuring
The WLAN VoIP Residential Gateway can be managed via a Web browser. However,
before doing so, you must assign a unique IP address to the WLAN VoIP Residential
Gateway. Use a RJ-45 LAN cable and any of the four 10/100Base-TX RJ-45 ports of WLAN
VoIP Residential Gateway as the temporary RJ-45 Management console port to login to the
WLAN VoIP Residential Gateway and set up the IP address for the first time. (The default IP
is “192.168.0.1”. You can change the WLAN VoIP Residential Gateway’s IP to the needed
one in the WAN Settings under Network Configuration menu.)
Follow these steps to manage the WLAN VoIP Residential Gateway through a Web browser:
Use one of the four 10/100Base-TX RJ-45 ports as the temporary RJ-45
Management console port to set up the assigned IP parameters of the WLAN VoIP
Residential Gateway.

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1. IP address
2. Subnet Mask
3. Default gateway IP address, if required
Run a Web browser and specify the WLAN VoIP Residential Gateway’s IP address to
reach it. (The default IP of VoIP Residential Gateway is “192.168.0.1” before any
changes.)
Login to the WLAN VoIP Residential Gateway to reach the Main menu.
Once you gain the access, a Login window appears like the following:
Enter the authorized user name and password then click “Login”. The default user name is
admin and without a password (leave this field blank).
After a successful login, the following WLAN VoIP Residential Gateway Main Menu screen
appears.
NOTE: If you login the VoIP Residential Gateway from WAN port. Please add IP address
and Http port number: “8888”for remote login. For example “192.168.1.1:8888”. (Http
port number can be changed in Administrator Account under the Management Menu).

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1. Information: To display WLAN VoIP Residential Gateway system set-up information,
including the system information (e.g. location, firmware version, WAN, LAN status, etc.)
and the line status (e.g. view-only field that shows the SIP and FXS port status)
2. Network Management: To configure the WLAN VoIP Residential Gateway settings,
including WAN and LAN Settings, DHCP, NAT, DDNS, etc.
3. Switch Management: To configure WLAN VoIP Residential Gateway Ethernet settings,
including Port Configuration, Bandwidth Control, VLAN and IGMP settings.
4. Switch Monitor: To show the status of each WLAN VoIP Residential Gateway port.
5. SIP Management: To configure SIP settings, including SIP Basic/Advance/Account
Settings.
6. VoIP Management: To configure VoIP settings, including Voice, Phone Book, Call
server, FAX and FXS port settings, etc.
7. CATV Settings: To enable or disable CATV module (Only available for the WLAN VoIP
Residential Gateway with RF module installed).
8. Management: The Menu including Administrator Account, system Date /time setting,
Ping test, Save/Restore and Firmware Update.
9. Save & Logout: To save all configuration changes to the system or Logout reboot.

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2.3 Information
Select Information from the Main Menu, then the sub-items –System information, Line
Status,CDR and Syslog Table –will show up.
2.3.1 System Information
Select System Information from the Information menu, then System Information screen
page appears.
System
Company Name: View-only field that shows the producer or manufacturer of this WLAN
VoIP Residential Gateway.
System Name: View-only field that shows the System name for this WLAN VoIP Residential
Gateway.
System Object ID: View-only field that shows a predefined System OID.
System S/N.: View-only field that shows the product’s serial number.
Firmware Version: View-only field that shows the version of the product’s firmware.
Host name: View-only field that shows the Host name of the WLAN VoIP Residential
Gateway.
Date & Time: View-only field that shows the system’s current Date & time.
Up Time: View-only field that shows how long the system has been up.
Device mode: View-only field that shows the current WLAN VoIP Residential Gateway
operational mode. The device mode can be changed in WAN Settings.

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Fiber Information
Connector: View-only field that shows the fiber connector type.
Speed: View-only field that shows the speed of this fiber transmission.
Wave Length: View-only field that shows the receiving and transmitting wave length of this
fiber.
Distance: View-only field that shows the maximum distance that this fiber can reach.
WAN
WAN Type: View-only field that shows the WAN port type (Static IP or DHCP assigned) of
the WLAN VoIP Residential Gateway.
MAC Address: View-only field that shows the unique and permanent MAC address
assigned to the WLAN VoIP Residential Gateway. The factory default MAC address of your
WLAN VoIP Residential Gateway can not be changed.
IP Address: View-only field that shows the unique IP address of WAN interface.
Subnet Mask: View-only field that specifies the subnet mask to be used with the WLAN
VoIP Residential Gateway IP address. The default subnet mask values for the three Internet
address classes are as follows:
Class A: 255.0.0.0
Class B: 255.255.0.0
Class C: 255.255.255.0

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Default Gateway: View-only field that specifies the IP address of a gateway or a router,
which is responsible for the delivery of the IP packets sent by the WLAN VoIP Residential
Gateway. This address is required if the WLAN VoIP Residential Gateway and the network
management station are on different networks or subnets. The default value of this
parameter is 0.0.0.0, which means no gateway exists and the network management station
and WLAN VoIP Residential Gateway are on the same network.
MTU: View-only field that shows the Ethernet packet MTU (Maximum Transmission Unit) of
the WLAN VoIP Residential Gateway.
Packet Info.: View-only field that shows the number of packets received and transmitted.
DNS1: View-only field that shows the IP address of the primary DNS server which has been
either assigned dynamically by your ISP or specified by the user.
DNS2: View-only field that shows the assigned IP address of the secondary DNS server.
LAN
MAC Address: View-only field that shows the unique and permanent MAC address in LAN
assigned to the WLAN VoIP Residential Gateway. Te factory default MAC address of your
WLAN VoIP Residential Gateway can not be changed.
IP Address: View-only field that shows the IP address of LAN interface.
Subnet Mask: View-only field that specifies the subnet mask to be used with the WLAN
VoIP Residential Gateway IP address. The default subnet mask values for the three Internet
address classes are as follows:
Class A: 255.0.0.0
Class B: 255.255.0.0
Class C: 255.255.255.0
Packet Info.: View-only field that shows the number of packets received and transmitted.
DHCP Server: View-only field that shows whether the LAN port DHCP server is enabled or
not.

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2.3.2 Line Status
Select Line Status from the Information menu, then Line Status screen page appears.
Gateway Status: View-only field that shows the Telephone port (FXS) status of the WLAN
VoIP Residential Gateway.
SIP Status: View-only field that shows whether the Port 1 and Port 2 have registered with
the SIP server.
Click the “Refresh”button to update the current line status.
2.3.3 CDR
Select CDR from the Information menu, then CDR screen page appears.
Call/Rcv: View-only field that shows whether the user is a caller or a receiver.
Phone NO.: View-only field that shows the phone number of incoming or outgoing calls.
Call Time: View-only field that shows the time when the phone is rang.

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Answer Time: View-only field that shows the time when the call is answered.
Disconnect Time: View-only field that shows the time when the call is disconnected.
Disconnect Reason: View-only field that shows the corresponding disconnect reason code.
Duration: View-only field that shows the answering time period of an incoming and outgoing
call.
TEL Port: View-only field that shows which telephone port a call is used.
2.3.4 Syslog Table
Select Syslog Table from the Information menu, then Syslog Table screen page appears.
Syslog Message: The Syslog Table lists the latest 500 system log messages. The user can
select what information will be shown in this Syslog Table in System Log under the
Management menu.
Click the “Refresh”button to update the Syslog Table.
Click the “Delete”button to clear all log messages from the Syslog Table.

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2.4 Network Management
Select Network Management from the Main Menu, then sub-items - WAN Settings, LAN
Settings and Static Route, etc –will show up.
2.4.1 WAN Settings
Select WAN Settings from the Network Management menu, then WAN Settings screen
page appears.
NAT/Bridge Mode: There are 5 modes (Mode 0 ~ Mode 4) in the pull-down menu for
selection. According to the application attached to this WLAN VoIP Residential Gateway,
you can select the appropriate mode by referring to the table below:
Mode
Bridge
NAT
0
Pure 5-port switch mode without VLAN and NAT functions
1
WAN + LAN 1
LAN 2~4
2
WAN + LAN 1 + LAN 2
LAN 3~4
3
WAN + LAN 1 + LAN 2 + LAN 3
LAN 4
4
WAN
LAN 1~4
The default setting is Mode 4.
NOTE: After you switch between Bridge and NAT mode, the ARP table must be cleared by
using the “arp -d”command (under PC MS-DOS Mode).
WAN Port IP assignment: Choose one of the three options –Static IP, DHCP or PPPoE.
1. Static IP: If you choose Static IP, you will need to enter the IP address, subnet mask,
Default gateway address, and DNS server for WAN setting. The Static IP screen page
appears as follows:

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Host Name: The Host Name is optional but may be required or defined by the user.
The default host name is the device name of the WLAN VoIP Residential Gateway and
may be changed.
IP Address: If you choose to specify IP address, enter a unique IP address for this
WLAN VoIP Residential Gateway.
Subnet Mask: Specify the subnet mask with the WLAN VoIP Residential Gateway IP
address. The default subnet mask values for the three Internet address classes are as
follows:
Class A: 255.0.0.0
Class B: 255.255.0.0
Class C: 255.255.255.0
Default Gateway: Specify the IP address of a gateway or router, which is responsible
for the delivery of the IP packets sent by the WLAN VoIP Residential Gateway. This
address is required if the WLAN VoIP Residential Gateway and the network
management station are on different networks or subnets. The default value of this
parameter is 0.0.0.0, which means no gateway exists and the network management
station and WLAN VoIP Residential Gateway are on the same network.
Static IP MTU: Static IP MTU (Maximum Transmission Unit) can be changed for optimal
performance. 1500 is the default MTU.
Static IP MRU: Static IP MRU (Maximum Receive Unit) can be changed for optimal
performance. 1500 is the default MRU.
DNS (Domain Name System): DNS is used to map a domain name to its
corresponding IP address and vice versa. The DNS server is extremely important.
Without it, you must know the IP address of a computer before you can access it. The
WLAN VoIP Residential Gateway uses a system DNS server (in the order you specify
here) to resolve domain names for VPN, DDNS and the time server.
Primary DNS Server: Specify the primary IP address of the DNS server.
Secondary DNS Server: Specify the secondary IP address of the DNS server.