Installation guide

Quadro Manual II: Administrator's Guide Administrator's Menus
Quadro4x, 4xi, 4xa, 4xia, 4xs, 4xis, Quadro16x, 16xi, 16xa, 16xia, 16xs, 16xis; (SW Version 3.1.x) 40
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-70: Extension Codecs list
Add opens the Add Entry page where the user may add
codecs supported by Quadro. 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-71: Extension Codecs - Add Codec page
The Move Up/Move Down buttons are used to move the selected codec one level up/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.
Enable T.38 FAX checkbox enables the FAX tone detection and the T.38 codec support for the FAX transmission from/to the Fax Machine/Fax
modem attached to the line. Enable Pass Through FAX checkbox enables the FAX tone detection and the G711 codec support for the FAX
transmission from/to the Fax Machine/Fax modem attached to the line.
If both of these checkboxes are enabled, T.38 codec will be used as preferred codec for FAX transmit/receive and if not acceptable by the peer,
G711 codec will be used instead.
Please Note: If both of these checkboxes are disabled, no FAX transmission to the peer’s voice mailbox will be possible. Checkboxes are applicable
for FAX transmission/receipt over IP network only.
Enable Pass Through Modem checkbox enables the modem tone detection and the G711 codec support for the data transmission from/to the
modem attached to the line. During data transmission, Silence Suppression (see
RTP Settings) and Echo Cancellation are being disabled on the
line.
Force Self Codecs Preference for Inbound Calls checkbox enables the usage of the own preferred codecs (if available on both peers) for the IP
connection establishment on the extension.
Call Park Service
Call Park service is used to store a call on a specific number so that any other user on the system can retrieve it. For example, a user receives a call
but wants to take it in a conference room where it is possible to speak privately. Transferring the call to the conference room is not an option,
because the conference room it is transferred to might be in use, or the user is unable to walk to the conference room in time to answer the call. The
user can use Call Park to place the call at a specific number and then retrieve the call on reaching the conference room.
To use the Call Park feature, the call parking service should be enabled for one or more extensions on the Quadro from the
Extensions
Management
page.
To activate the Call Park service, the Quadro user should dial the appropriate digit combination (see Feature Codes) during the call. The destination
party will be placed on hold, while the SIP username of the first available extension being configured for the call parking, will be played to the Quadro