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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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Chapter 5: Configuring the CopperJet
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:
Page 68

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