Siemens Gigaset S675 IP Manual page 169

Voice codecs
Prerequisite: The
in the Settings for Bandwidth
Select the voice codecs your phone is to use, and specify the order in which the
codecs are to be suggested when a VoIP connection is established via this VoIP
phone number.
¤
Apply the voice codecs that your phone is to suggest for outgoing calls into
the Selected codecs
To do this, in the
apply (you can mark several entries using the Shift key or the Ctrl key).
Select <Add.
¤
Move the voice codecs that you do not want the phone to use into the
Available codecs
Select the voice codecs in the
Remove>
¤
Sort the voice codecs in the
should be suggested to the receiving device when a connection is estab-
lished. To do this, use the
When establishing a VoIP connection, the phone suggests the 1st voice codec
in the Selected codecs
device does not accept this voice codec (e.g. because it is not supported), the
2nd voice codec on the list is suggested, and so on.
If the receiving device does not accept any of the voice codecs in the
codecs list, the connection is not established. An appropriate message is dis-
played on the handset.
If the phone always starts by trying to establish a broadband connection, put
the
G.722
Please note
u
Only deactivate codecs (put them in the
ticular reason. The more codecs that are deactivated increases the risk of
calls not being established due to unsuccessful codec negotiations. In par-
ticular you can only establish broadband connections if you permit the
G.722
u
With incoming calls, all supported voice codecs are always permitted.
Area: Settings for Codecs
To save additional bandwidth and transmission capacity, on VoIP connections
that use the
pauses ("Silence Suppression"). Then, instead of the background noises in your
environment, your caller hears a synthetic noise generated in the receiver.
Please note: "Silence Suppression" can sometimes lead to deterioration in the
voice quality.
¤
In the
data packets during pauses should be suppressed when using the
codec, (select Yes).
Own Codec preference
area.
list.
Available codecs
list.
button.
list to the receiving device to begin with. If the receiving
codec at the top of the
codec.
codec you can suppress the transmission of voice packets in
G.729
Enable Annex B for codec G.729
option is activated for the
list select the voice codec that you want to
list (see above) and click the
Selected codecs
list into the order in which they
Selected codecs
Up and Down buttons.
list.
Selected codecs
Available codecs
field, state whether the transmission of
Setting the phone with the PC
Voice Quality
Selected
list) if there is a par-
G.729
167