Chapter 5: Configuring the CopperJet

5.18 Configuring VoIP

VoIP enables telephone calls to be made over an IP network. This enables DSL Service

providers to sell telephone services over DSL to customers without the expense of

providing any extra physical connections to the consumer, or network infrastructure in

addition to their existing IP network.

From the

Configuration

menu, go to

VoIP

. The

VoIP Configuration

page is displayed.

Select the Caller ID Region that applies to your country.

Available regions are:

•

US

•

JAPAN

•

UK

•

China

•

Europe

•

Netherlands

When you select a Signal Protocol (SIP or MGCP) and click on the

Apply

button, the

necessary fields for that protocol comes available.

You can select SIP or MGCP. For configuring SIP, go to section

5.18.1 Configuring VoIP

using SIP.

For configuring MGCP, go to section

5.18.2 Configuring VoIP using MGCP

.

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5.18.1 Configuring VoIP using SIP

SIP stands for Session Initiation Protocol (SIP), an application-layer control (signalling)

protocol for creating, modifying, and terminating sessions with one or more participants.

These sessions can include Internet telephone calls, multimedia distribution, and

multimedia conferences.

When you select

SIP

, as Signal Protocol,

the

SIP Configuration

page is displayed.

You need to add detailed configuration information about the SIP service that you are

creating. This information must be provided by your service provider.

Send Transport:

Udp is selected by default.

This option is used to configure the

default transport used for outgoing SIP INVITE requests. It is not

directly related to

tcpPort

and

udpPort

settings used by SIP and

MGCP

.

Signalling DSCP:

This option is used to set QoS characteristics for signalling packets.

See section

5.18.1.1 Configuring Signalling DSCP and RTP DSCP.

how to configure.

RTP DSCP:

This option is used to set QoS characteristics for RTP data packets.

See section

5.18.1.1 Configuring Signalling DSCP and RTP DSCP

how to configure.

Interface Name:

Interface name of CopperJet which finds the SIP Proxy Server.

SIP Registrar/Proxy:

This option is used to identify the IP domain for the SIP Proxy

server. The domain can be:

•

IP address – Of the SIP Registrar/Proxy.

•

IP Domain name - The domain name should be a FQDM

(Fully Qualified Domain name).

SIP User Domain:

This option is used to set the SIP user domain. The domain can be:

•

IP address - for example, 192.168.1.1

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Chapter 5: Configuring the CopperJet

•

IP Domain name - The domain name should be a FQDM

(Fully Qualified Domain name).

SIP Silence Suppression:

This command enables or disables Silence Suppression.

Silence suppression controls the silence suppression insertion

in the voice data samples.

Endpoints:

Index:

An index value that identifies the endpoint.

Name:

A name for the endpoint.

Password:

This command sets a password to be associated with an endpoint.

Active:

By default Yes.

Yes

endpoint is Active.

No

and endpoint is not Active.

Display Name:

The display name for the endpoint. The name must only be

composed of alphanumeric characters.

Codecs:

This command specifies the codec types which can be used to

compress the Voice packets from the endpoint specified.

The codecs are listed in order of preference to be used for a phone

call. The endpoint will negotiate with the other end to choose a

codec which they can both use.

Voice codec support:

•

G.711 (A-Law and μ

−

Law),

•

G.726 (32kb) and

•

G.729 a/b

After the correct settings are filled in, click on

Apply

. Go to the

Configuration

menu and

click on

Save config

to save the new settings into the CopperJet. SIP is only active after a

restart of the CopperJet. To Restart the CopperJet, go to

System -> Restart

and click on

the

Restart

button.

5.18.1.1 Configuring Signalling DSCP and RTP DSCP

This option is used to set QoS characteristics for signalling packets. It sets the DSCP

(Differentiated Services Code Point) in the IP header. This is a 6-bit value that is used to

select the per-hop behavior (PHB) to be applied to a signalling packet when it is forwarded.

The six most significant bits of the DiffServ field is called as the DSCP (Differentiated

Services Code Point).

To configure the Signalling DSCP, click on the

Select…

button. The

DSCP Selection

page is

displayed.

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Chapter 5: Configuring the CopperJet

IP Precedence:

IP Precedence Bits:

Default “0-Routine”. An independent measure of the

importance of this datagram. You can select:

-

0-Routine

-

1-Priority

-

2-Immediate

-

3-Flash

-

4-Flash Override

-

5-CRITIC/ECP

-

6-Internetwork Control

-

7-Network Control

Delay:

Default “0-Normal”. Prompt delivery is important for

datagrams with this indication. You can select:

-

0-Normal

-

1-Low

Throughput:

Default “0-Normal”. High data rate is important for

datagrams with this indication. You can select:

-

0-Normal

-

1-High

Reliability:

Default “0-Normal”. A higher level of effort to ensure

delivery is important for datagrams with this indication.

You can select:

-

0-Normal

-

1-High

DSCP Precedence:

DSCP Class:

Default value is ‘Default”. Set the DSCP field in packet

header to the value represented by the DiffServ class

value. This class may be EF, BE or any of the CSxx or AFxx

classes. You can select:

-

Match IP Precedence

-

Assured Forwarding 1

-

Assured Forwarding 2

-

Assured Forwarding 3

-

Assured Forwarding 4

-

Expedited Forwarding

-

Default

IP Precedence Bits:

Default “0-Routine”. An independent measure of the

importance of this datagram. You can select:

-

0-Routine

-

1-Priority

-

2-Immediate

-

3-Flash

-

4-Flash Override

-

5-CRITIC/ECP

-

6-Internetwork Control

-

7-Network Control

AF Drop:

Default “1-Low”.

The drop priority can take three

values: 0, 1 or 2. The values are described below:

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Chapter 5: Configuring the CopperJet

-

1-Low

-

2-Medium

-

3-High

In the DSCP bits field, you will see the binary value of what you have selected.

Click on

OK

.

5.18.1.2 Advanced SIP Configuration

Configuration of advanced Voice over IP settings in the CopperJet IAD’s is done through

TELNET. To access the TELNET configuration mode, start a TELNET session from your

computer (i.e.

TELNET <ip-address>

) and enter your username and password (default

username and password are

admin, admin

). To see the VoIP settings type the following

command:

-->

voip show

<Enter>

With this command you see the SIP and MGCP settings.

To see the options available for SIP, type the following:

-->

voip set sip ?

<Enter>

5.18.1.3 Configuring Silence Suppression

This command enables or disables Silence Suppression.

Silence suppression controls the silence suppression insertion in the voice data samples.

When silence suppression is enabled, silence is ‘transmitted’ as a special type of compact

voice sample. This is a much more efficient use of bandwidth, instead of just sending

normal voice samples which contain nothing but silence.

With the following command you can enable or disable Silence Suppression:

--> voip set sip silenceSuppression {enabled|disabled}

<Enter>

Example:

--> voip set sip silenceSuppression disabled

<Enter>

5.18.1.4 Configuring Digitmap

A digit map is a regular expression string which defines a pattern of digits which will be

recognised by the system as a valid phone number.

The digit map can be used to specify not only the number of digits required to make a

valid phone number but also the range of digits and special characters which can be

entered and timeout values after the digits have been dialed.

With the following command you can set the digitmap:

-->

voip set sip digitmap <digitmap>

<Enter>

Example:

-->

voip set sip digitmap(x.T|##S|*[268]xS|*74x.#S|x#S)

<Enter>

The above digitmap sets the following characteristics for the SIP phones:

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