User manual
IP Telephone User Guide
55
The values can be changed using the + and – buttons or by entering a
number between 1 and 10 in the appropriate volume setting box.
There is also an option to set the ringer volume. This has three values –
l
ow, normal, high. The values can be selected using the drop down list.
S
ettings are applied and saved using the Save Settings button.
Voice CODEC selection
It is possible to change the preferred voice codec; this is the codec that
will be used in preference for any VoIP call, and to change the codecs that
are enabled on the Flexor 500. Settings can be changed as follows:
Codecs can be enabled and disabled by checking and unchecking the
check boxes next to each codec name in the Voice codec Selection
area.
The preferred codec can be selected from the Codec Preference
drop down list.
Changes can be saved by clicking Save Settings.
DTMF mode
These settings may have been fixed by your ITSP and will not be shown in
this case.
Change settings as follows:
Select either Inband or RFC2833 (RTP) based DTMF support by
clicking on the appropriate radio button in the DTMF Mode section.
Changes can be saved by clicking Save Settings.
QoS (Quality of Service) settings
QoS (Quality of Service) settings can be set from the QoS Settings menu.
This menu is accessed by clicking on the QoS Settings
link on the home
page. The diagram below shows the QoS Settings menu:
Upstream bandwidth shaping
When the Flexor 500 is connected between your LAN Ethernet switch and
your PC, the Flexor 500 can shape traffic when a VoIP call is in progress.
This enables the Flexor 500 to guarantee bandwidth for the VoIP call
ensuring high quality calling. You should set the upstream bandwidth
settings to match the upstream bandwidth of your broadband connection,
to ensure that you do not artificially degrade your PCs networking
performance.
To change the settings: