QuadroCS Manual II: Administrator's Guide
Administrator's Menus
Quadro
CS
(SW Version 3.0.x)
24
Conference Codecs
To establish IP voice communication, both parties have to use the same codec. During setup of the communication line, the codec is negotiated. If
the caller does not find a matching codec, the communication won’t start. If you want to be reachable by all IP callers, it is helpful to support as many
codecs as possible. In this case, all codecs that Quadro supports should be added to the
Active
Codecs'
table. On the other hand, some codecs
require significant bandwidth- up to 64 kBit/s. If you definitely don't want to use these codecs, you must remove them from the
Active Codecs'
table.
The
Conference
Codecs
page displays a list of Quadro
Active
Codecs.
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 strictly in the top down order given
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. The following error message results 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 one the error will
occur: “At least one codec should stay in the codec list”.
Fig. 0-35 Conference Codecs List
Add
opens the
Add Entry
page where the user may add
codecs supported by QuadroCS. The voice codec defines
the voice compression algorithm for the incoming and
outgoing DSP packages.
Codecs
lists all codecs supported by Quadro. If no more
codecs are available (all available codecs have already
been transferred to the
Active Codecs'
table), the
Add
Entry
page will display the message “No Available Codecs”
instead of the drop down menu.
The
Move Up/Move Down
buttons are used to move the
selected codec one level up or down in the table.
Fig.0-36 Conference Codecs – Add Codec page
