User guide
Doortello Business
Issue 1.00
Page 25
Maximum number of digits input from dial pad
As default it is possible to input up to 32 digits using the dial pad. After the
maximum number of digit input is reached the dial pad is switched off and no more
input is possible. These maximum number of digit input can be limited. This is useful
for two reasons: a) you can restrict the dial of external telephone numbers and b)
the device can detect with a fixed telephone number length (i.e. with PBX you have
normally 2, 3, 4, or max. 5 digits long numbers) much faster the dial end and switch
to the tone detection. To program the maximum digit input please use the following
procedure:
OK tone
{Max. number of digits
} OK tone
Possible values are from
to
.
Please note!
The input on the dial pad is also time controlled. As default you have to press
a key within 5 seconds from line seizure or after pressing the previous key. If
this is not done the until will witch to tone detection and the dial pad is
deactivated (read also
Dial pad input time
for more information).
If needed a full duplex mode can be programmed. In this case the microphone and
the loudspeaker are activated all the time. To enable the full duplex modality please
follow this procedure:
OK tone
OK tone
If you want to switch back to half duplex mode
OK tone
OK tone
Please note!
In the full duplex modality it might be not possible to reach the maximum
possible volume due to the feedback noise which can be generated. A higher
volume can be achieved if you extract the microphone from its casing. This is
available only in the BG version (DB 01). To extract the microphone you have to
open the case, remove the insulating foam over the microphone allocation on
the front side and extract carefully the microphone complete with his rubber
holder. Install then the microphone as far as possible from the DB case. Ensure
that the microphone has still an appropriate hole and that it is flush mounted
with the front plate. We suggest the use of the full duplex speakerphone only
with external installation and quite environments.
