Call signal
The unit translates call signals between the Dante/AES67 network and party-line intercom units. The
table below provides further information on this.
Call Signal Translation
Dante/ AES67 Network
Call Signal
Party-Line
Intercom
Call Signal
20 kHz @ -20dBFs for 2 seconds
>>>>
<<<<
RTS standard
DC on pin 3
>>>>
<<<<
Clear-Com
standard
20 kHz on pins 2
and 3
Network Audio Mixers
The Beatrice Lucia uses the Broadway chipset from Audinate as its network audio interface. The variant
of the Broadway that we use in the Lucia is 8 audio channels in and out. As only 4 audio channels are
required for the two party-line interfaces we have 4 ‘spare’ channels available. We also have some spare
DSP capacity within the Lucia’s DSP. So rather than waste these valuable network resources we’ve
included a simple preset audio mixer with 4 audio inputs and 4 audio outputs to the network.
PRESET MIXER FORMAT
DANTE
TRANSMITTER
Sum of Mix in 1-2 Sum of Mix in 3-4 Sum of Mix in 1-3 Sum of Mix in 1-4
DANTE RECEIVER
Mix in 1
X
X
X
Mix in 2
X
X
X
Mix in 3
X
X
X
Mix in 4
X
X
These preset network mixers can be used for anything you like. They do not have to be anything to do
with your intercom system, they are just a set of mixers sitting on your Dante/ AES67 network.
To use them all you need to do is route the network audio circuits within your Dante/ AES67 setup that
you wish to mix to the Dante receivers and then select the appropriate Dante transmitters for the mix
output that you require.
For example say you want to add a programme audio signal to the party-line A intercom talkback
circuits to be sent to the attached party-line beltpacks along with any network talkback signals. To do
this in Dante controller you would:
1: Route the network talkback signal to Dante Receiver ‘A’
2: Route the network programme audio to Dante Receiver ‘B’
3: Route Dante Transmitter ‘Sum of A+B’ to Dante Receiver ‘Party-Line A CH1’
