DEC-200™ H.264 and MPEG-2 Decoder
User Guide V2.7
50
4.2.2
Talkback Session between DEC-200™ and ENC-100™
To use the talkback function on the DEC-200™ in connection with the ENC-100™, please be sure that
your encoder has the firmware version 3.12, because this firmware is necessary. If your ENC-100™
does not have the firmware version 3.12, please contact
.
In order to talkback from the DEC-200™ to the ENC-100™, please be sure that you have a
microphone or another audio signal connected to the ‘Audio In’ input of your DEC-200™. Take also
care that loudspeakers are connected in the ‘Audio Out’ output of the ENC-100™ on which you want
talkback. See Figure 35. Figure 36 shows the talkback connection between DEC-200™ and ENC-
100™ in Full Duplex Mode.
Figure 35: Talkback connection between DEC-200™ and ENC-100™
To start the talkback session you must configure the DEC-200™ webpage. Please open the DEC-
200™ webpage, select in the main menu ‘DECODER’ and click in the submenu ‘AUDIO’. See Figure 9
on page 21.
Enter in the ‘Talkback IP’ field the IP-address of the encoder with which the DEC-200™ should start
the talkback session. For example: A DEC-200™ should start a talkback session with an ENC-100™.
The encoder has the IP-address 172.16.20.100. So you must enter in the ‘Talkback IP’ field of the
DEC-200™ webpage the IP-address of the encoder, in this case 172.16.20.100.
Next, the talkback port number must be entered in the ‘Talkback Port’ field. The decoder and the
encoder must always have the same talkback port number. For a talkback session the ENC-100™
listens always on port 9177 and this port number can not be changed at the encoder side. So please
enter in the ‘Talkback Port’ field of the DEC-200™ the port number 9177.
Now, you must select in the field ‘Talkback Rate’ your desired sample rate, which should be used from
the decoder. The decoder and the encoder must always use the same sample rate. So, the set
talkback rate must also be set in the ENC-100™ webpage. At the encoder side it can be chosen
between 22.05 kHz and 48 kHz.
Furthermore, please select in the drop-down-field ‘Audio Input’ the corresponding audio input for the
talkback function. If you supply the DEC-200™ with the audio signal from a microphone, you must
select in the drop-down-field ‘Audio Input’ the parameter ‘MIC’. If you supply the DEC-200™ with a line
level signal (e. g.: the audio signal from a DVD-Player), you must select in the drop-down-field ‘Audio
Input’ the parameter ‘LINE’.
You can also set the gain in the fields ‘LineIn Gain’ and ‘MicIn Gain’ for the corresponding audio input,
which you have set in the 'Audio Input' drop-down-field.