QuadroFXO Manual II: Administrator's Guide
Administrator's Menus
QuadroFXO (SW Version 3.0.x)
33
SIP Advanced Settings
The
SIP Advanced Settings
page is used to configure the Outbound Proxy, Secondary SIP Server and Outbound Proxy for the Secondary SIP
Server settings and to define other SIP server specific settings.
SIP Outbound proxy is such a SIP server, where all the SIP requests and other SIP messages are transferred. Some SIP servers use an outbound
proxy server to escape restrictions of NAT, e.g., Free World Dialup service uses an Outbound Proxy server. If an Outbound proxy is specified for an
extension, all SIP calls originating from that extension are made through that outbound proxy, i.e., all requests are sent to that outbound proxy, even
those call by Speed Calling.
The Secondary SIP Server acts as an alternative SIP registration server when the primary SIP Registration Server (defined from the SIP Registration
Settings page) is inaccessible. If the connection with the primary SIP server fails, Quadro will automatically start sending SIP messages to the
Secondary SIP Server, and will switch back to the primary SIP server, as soon as its connection is reestablished.
The
SIP Advanced Settings
page consists of the following
components:
UserID
requires an identification parameter to reach the SIP
server. It should have been provided by the SIP service
provider and can be requested for some SIP servers only, for
others, the field should be left empty.
Send Keep-alive Messages to Proxy
enables the SIP
registration server accessibility verification mechanism.
Timeout
indicates the timeout between two attempts of SIP
registration server accessibility verification. If no reply is
received from the primary SIP server within this timeout, the
Secondary SIP server will be contacted. When the primary SIP
server recovers, SIP packets will be sent to it once again.
A group of
Host address
and
Port
text fields respectively
require the host address (IP address or the host name), the
port number of the
Outbound Proxy
,
Secondary SIP Server
and the
Outbound Proxy for the Secondary SIP Server
.
These settings are provided by the SIP servers’ providers and
are used by Quadro to reach the selected SIP servers.
RTP Priority Level
drop down list is used to select the priority
(low, medium or high) of RTP packets sent from corresponding
extension. RTP packets with higher priority will be preceded
first in case of heavy traffic.
Fig. III- 105 Extension Advanced SIP Settings page
Extension Codecs
To establish IP voice communication, both partners have to use the same codec. During establishing the communication line, this codec is
negotiated. If the caller does not find a fitting codec, the communication cannot take place. So, if you want to be reachable by preferably all IP calls, it
is helpful to support as many codecs as possible. In this case, all the codecs that Quadro offers should be added to the
Active
Codecs
table. On the
other hand, some codecs require a high transfer rate - up to 64 kbit/s. If you are certain you do not want to use these codecs, you have to make sure
they are not listed in the table
Active Codecs
.
The
Extension Codecs
page displays a list of
Active
Codecs
and the state of the
Out of Band DTMF
and
FAX
Support
features for Quadro extensions (also Auto
Attendant).
Please Note:
Use caution when configuring Auto Attendant
Codecs as they are used by virtual extensions for
redirecting the incoming calls.
The table
Active Codecs
lists active voice codecs for the
selected line that are supported by Quadro. The order of
records in the
Active Codecs
table is important for
transmitting and receiving. A codec placed at the top of the
table will be used as the preferred codec. If the remote
party does not support the preferred codec, the following
codecs will be tried out in a top-down order in the
Active
Codecs
table.
Each record in the table has an assigned checkbox. It is
used to select the record to be deleted or moved up or
down.
An error occurs if no records are selected and the user
activates the delete button:
“No records selected”. At least
one codec must be attached to the line. When attempting to
delete the last codec, this error will occur: “At least one
codec should stay in the codec list”.
Fig. II-49: Extension Codecs list
