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LAN IP Settings

The gateway is preconfigured to use private IP addresses on the LAN side, and to act as a DHCP

server. You can use the LAN IP Setup screen to configure LAN IP services such as the IP address

of the gateway and DHCP.

To configure the LAN IP:

1.

Under the Advanced heading on the main menu, select LAN IP. The LAN IP screen displays.

2.

Enter the following information:

•

LAN IP Address.

The LAN IP address that you want to assign to your gateway. The

default is 192.168.0.1.

•

Subnet Mask.

The subnet mask for your network IP address. The default is

255.255.255.0. (Unless you are implementing subnetting, use the default subnet mask.)

Note:

If you change the LAN IP address of the gateway while connected through the

browser, you will be disconnected. You must then open a new connection to the

new IP address and log in again

Figure 4-6

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These addresses are part of the IETF-designated private address range for use in private

networks, and should be suitable in most applications. If your network has a requirement

to use a different IP addressing scheme, you can make those changes in the LAN IP page.

•

DHCP Server.

To to assign IP addresses to your computers automatically, select Yes. To

disable the DHCP Server and assign IP addresses to your computers manually, select No.

See

“Using the Gateway as a DHCP Server” on page 4-8

.

•

Starting IP Address.

Enter the first of the contiguous addresses in the address pool. The

default start address is 192.168.0.10.

These addresses should be part of the same IP address subnet as the gateway’s LAN IP

address. Using the default addressing scheme, you should define a range between

192.168.0.10 and 192.168.0.253. The range of IP addresses between 192.168.0.2 and

192.168.0.9 can be used for devices with fixed (or static) addresses.

•

Ending IP Address.

Enter the last of the contiguous addresses in the address pool. The

default end address is 192.168.0.19.

•

DHCP Reservation Lease Info.

View information about each PC that has been assigned

a DHCP lease by the gateway. The MAC address of the PC, IP address assigned and the

expiration time of the DHCP lease are listed. You can manually revoke the DHCP leases

by clicking Clear DHCP Leases.

3.

Click

Apply

to save your settings.

Using the Gateway as a DHCP Server

By default, the gateway is a DHCP server. It can assign IP, DNS server, and default gateway

addresses to all computers connected to the LAN. The default wireless voice gateway address is its

LAN address. The wireless voice gateway assigns IP addresses to the network computers from a

pool of addresses specified in the Starting Address and Ending Address fields. Each pool address

is tested before it is assigned to avoid duplicate addresses on the LAN.

Note:

If you select no for the DHCP server setting, then you must assign a static

IP address to your PC in order to reconnect to the gateway and enable the

DHCP server again.

Note:

If another device on your network is the DHCP server, or if you will manually

configure the network settings of all of your computers, select No for the DHCP

Server. For more information about DHCP and IP addresses, see the link to

“Preparing a Computer for Network Access:” in Appendix B

.

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The gateway delivers the following parameters to any LAN device that requests DHCP:

•

An IP Address from the range you have defined.

•

Subnet Mask.

•

Gateway IP Address is the gateway’s LAN IP address.

•

Primary DNS Server, if you entered a Primary DNS address in the Basic Settings page;

otherwise, the gateway’s LAN IP address.

•

Secondary DNS Server, if you entered a Secondary DNS address in the Basic Settings page.

Configuring DHCP Server Reservation Parameters

To configure DHCP server reservation parameters for your LAN:

1.

Enter the MAC address of the PC for which you want to reserve an IP Address.

2.

Enter a free IP Address for the PC.

3.

CLick

Add

.

To remove a reserved IP from the DHCP Reservation Lease Info table:

1.

Select the radio button adjacent to the entry that you want to remove from the table.

2.

Click

Delete

.

The DHCP Client Lease details for all computers in the LAN gateway are shown in the DHCP

Client Lease Info table. To clear all DHCP Client leases, click Clear DHCP Leases.

.

Remote Management Access

You can use remote management to configure, upgrade, and check the status of your gateway

through the Internet.

Note:

The gateway implements a DNS relay function. When it receives a DNS request on

the LAN, it passes it to the DNS server specified on the WAN. It then relays the

response back to the original requesting PC.

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To configure remote management:

1.

Under the Advanced heading on the main menu, select Remote Management. The Remote

Management screen displays:

2.

Select the

Allow Remote Management

check box.

3.

Enter the

Remote User Name

and

Remote Password

that will be required to remotely access

your gateway.

4.

Enter the

Port Number

that will be used for accessing the management interface.

Web browser access normally uses the standard HTTP service port 80. For greater security,

you can specify a custom port by entering that number in the box provided. Choose a number

between 1024 and 65535, but do not use the number of any common service port. The default

is 8080, which is a common alternate for HTTP.

5.

To make sure that you can use remote management even if the wireless voice gateway is reset,

select the

Allow Remote Management after Factory Default Reset

check box.

If you do not select this check box, you will not be able to remotely access the gateway if you

use the Erase feature to revert to the Factory Default settings.

6.

Click

Apply

to have your changes take effect.

When accessing your wireless voice gateway from the Internet, type the WAN IP address of your

gateway into your browser, followed by a colon (:) and the port number. For example, if your

WAN IP address is 134.177.0.123 and you use port number 8080, type the following in your

browser:

Figure 4-7

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Universal Plug and Play (UPnP)

Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, access

the network and connect to other devices as needed. UPnP devices can automatically discover the

services from other registered UPnP devices on the network.

UPnP can be enabled or disabled for automatic device configuration. The default setting for UPnP

is disabled. If disabled, the router will not allow any device to automatically control the resources,

such as port forwarding (mapping), of the router.

Other features of UPnP:

•

Advertisement Period

. The number entered in this field (in minutes) determines how often

the router will advertise (broadcast) its UPnP information. This value can range from 1 to 1440

minutes. The default period is for 30 minutes.

–

Shorter durations ensure that control points have current device status at the expense of

additional network traffic.

–

Longer durations might compromise the freshness of the device status but can

significantly reduce network traffic.

•

Advertisement Time To Live.

The time to live for the advertisement is measured in hops

(steps) for each UPnP packet sent. A hop is the number of steps allowed to propagate for each

UPnP advertisement before it disappears. The number of hops can range from 1 to 255. The

default value for the advertisement time to live is 4 hops, which should be fine for most home

networks. If you notice that some devices are not being updated or reached correctly, then you

may need to increase this value a little.

•

UPnP Portmap Table.

The UPnP Portmap Table displays the IP address of each UPnP device

that is currently accessing the router and which ports (internal and external) that device has

opened. The UPnP Portmap Table also displays what type of port is opened and if that port is

still active for each IP address.