Installation guide

QuadroCS Manual III: Moderator's Guide Moderator's Menus
QuadroCS (SW Version 3.1.x) 20
The Reservations Chart displayed on this page illustrates
the dependency of the reserved number of participants
(vertical axis) on the time variable (horizontal axis).
Fig. II-26: Reservation Chart
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 used to initiate the conference.
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 conference, when
attempting to delete the last one the error will occur: “At least
one codec should stay in the codec list”.
Please Note: The table on this page is a read-only mode for
the users authenticated as participants.
Fig. II-27 Codecs page
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.
Fig. II-28 Codecs – Add Codec page
The Move Up/Move Down buttons are used to move the selected codec one level up or down in the table.
The Out of Band DTMF Transport checkbox enables DTMF code transmission in parallel with the voice stream. The destination receiving the
DTMF code will play it locally if it supports the feature. This is helpful to avoid DTMF’s loss upon bad traffic. This feature is valuable for all codecs but
it is especially recommended to enable it in case low bit rate codecs (G729, G723, G726/16, etc.) are selected.