PRG AV4202N

© (2007) Pirelli Broadband Solutions S.p.A. All Rights Reserved. Proprietary Use Pursuant to Cover Page Instructions.

Voice over IP Section

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FIGURE 4.

Advanced Panel

PRG AV4202N

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Voice over IP Section

Signaling Protocol.

The signaling protocol options available in the combo-box,

are determined by the VoIP stack on your gateway.

A different subset of parameters will become visible with each of the combo-box

choices. To apply the change of protocol you must press either 'OK' or 'Apply'. If

the applied protocol is of another stack, the Router will reboot after you accept

the reboot warning.

RTP.

Local RTP Port Range defines the port range for Real Time Protocol

(RTP) voice transport.

Quality of Service.

Type of Service (HEX) This is a part of the IP header that

defines the type of routing service to be used to tag outgoing voice packets

originated from the Router. It is used to tell routers along the way that this

packet should get specific QoS. Leave this value as 0XB8 (default) if you are

unfamiliar with the differentiated Services IP protocol parameter.

Codecs.

Codecs define the method of relaying voice data. Different codecs

have different characteristics, such as data compression and voice quality. For

example, G.723 is a codec that uses compression, so it is good for use where

bandwidth is limited but its voice quality is not as good compared to other co-

decs such as the G.711.

Silence Suppression.

The Silence Suppression feature allows optimization to

be made when no speech is detected. With this feature enabled, the Router is

able to detect the absence of audio and conserve bandwidth by preventing the

transmission of "silent packets" over the network.

Echo Cancellation.

Echo Cancellation is the elimination of reflected signals

(echoes) made noticeable by delay in the network. his also improves the band-

width of the line. When the delay of a voice call exceeds acceptable limits, the

router will protect the far end from receiving any echo generated at the local end

and sent back through the network.

© (2007) Pirelli Broadband Solutions S.p.A. All Rights Reserved. Proprietary Use Pursuant to Cover Page Instructions.

Parental Control Section

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Parental Control

Section

This chapter will describe the

Parental Control

accessible from the

Home Page

of the

PRG AV4202N

.

The abundance of harmful information on the Internet is posing a serious chal-

lenge for employers and parents alike - "How can I regulate what my em-

ployee/child does on the net?" Discus Web-filtering allows parents and employ-

ers to regulate, control and monitor Internet access. By classifying and catego-

rizing online content, it is possible to create numerous Internet access policies,

and easily apply them to your home network computers. As a result, you may

keep your children from harm's way by limiting access to adult and violent mate-

rial, or increase employee productivity by regulating access to non work-related

Internet content.

To effectively filter Web content one must first have a good idea of the kind of

information that is available on the Internet. It is necessary to formulate a land-

scape of the accessible content, categorize and classify themes and subjects

that may be considered inappropriate.

Discus Parental Control categorization methodology provides an easy and

straightforward method for fine-grained content filtering. The Parental Control

module is constantly updated with URL-based information classified according

to the following categories:



Child protection



Recreation and Entertainment



Personal business

PRG AV4202N

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Parental Control Section



Bandwidth control



Advertisements



Chat



Remote Proxies and Hosting Sites (possibly untrusted sources)



Other

Each category can be expanded into subcategories for better content control.

For instance, the 'Recreation and Entertainment' category is comprised of sub-

categories such as:



Arts and Entertainment



Education



Games



Hobbies and Recreation

GENERAL OVERVIEW

Discus Parental Control service is provided by "

Surf Control

", a company spe-

cializing in Internet content filtering. Therefore, you must subscribe to this ser-

vice in order to use this feature. You can subscribe through Discus WBM, as

described in the following section.

1.

Under the 'Services; tab, click the 'Parental Control' menu item. The Paren-

tal Control's 'General' screen appears.

2.

In the 'Activate' section, select the 'Enable Web Content Filtering' check

box, and click 'Apply'. A 'Server Status' section is added.

3.

If you have not subscribed yet or your subscription has expired, click the

'Click Here to Initiate and Manage your Subscription' link in the 'Subscribe'

section. The Web filtering subscription site will then be displayed in a new

browser window.

4.

Follow the instructions on the site and subscribe for a free trial. You will be

sent a verification email. Click the link in the verification email. Your sub-

scription will be activated soon after clicking the verification link.

5.

Return to Discus WBM, and click the 'Parental Control' menu item under the

'Services' tab. The 'Filtering Policy' screen should be displayed with sub-

scription expiry date at the top. If this is not the case, click the 'Advanced

Options' link and then the 'Refresh Servers'button. Wait a few seconds and

repeat this step.

PRG AV4202N

© (2007) Pirelli Broadband Solutions S.p.A. All Rights Reserved. Proprietary Use Pursuant to Cover Page Instructions.

Parental Control Section

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83

FIGURE 1.

General Panel

FILTERING POLICY

A filtering policy defines which sites will be blocked based on their category.

Discus provides four built-in policies:

Home

Blocks sites under the 'Child Protection' category.

Employee

Blocks sites from non work-related categories.

Block All

Blocks all access to the Internet.

Allow All

Allows unlimited Internet access.

These policies can be set from the 'Default Filtering Policy' drop-down menu in

the 'Filtering Policy' screen. To view or edit the 'Home' and 'Employee' policies,

click their respective links in this screen. To create your own filtering policy, per-

form the following:

1.

Click the 'Filtering Policy' link under the 'Parental Control' menu item.

2.

Click the 'Add a policy' link.