June 2015 - Ed.2.1
Audio over IP decoders E411, E413, E415 & E417 technical manual
Page 5
2.2
Audio layers
Decoders can accept up to 10 simultaneous sources or channels, grouped in three categories or “audio
layers”:
Background music:
The purpose of this layer is to be used for the ambience sound. Is the lowest priority layer and accepts
up to 6 sources (channels).
The allowable source types for this layer are: RTP, SHOUTcast / ICEcast, audio files (in continuous
playlist mode) and the analog inputs.
The selection of the channel to be played can be made manually with the web server of the device,
through an external application in a computer or mobile device and with the wall-mount control
TMH60ENA
4
.
It is also possible to allow the device to automatically change the channel being played if there are no
data to decode (for instance, a break-down in the connection to an internet radio).
The playing of a channel of this layer can be interrupted by the presence of audio in one channel of the
other two layers.
Advertisements:
This is the layer used to play advertisements. It accepts up to 3 channels, each one with its own priority
level.
Allowable source types are: RTP, RTP/SIP, Audio files (in periodic playlist mode) and the analog inputs.
Audio in this layer can interrupt the audio in the Background Music one and can be interrupted by
audio in the Emergency layer.
Emergency:
This is the highest priority layer and accepts only one channel. It is commonly used in PA systems for
evacuation or emergency messages.
The allowable source types for this layer are: RTP, RTP/SIP and the Analog inputs.
This is a summary of the allowable source types in each of the audio layers:
Audio layers
Background
music
Advertisements
Emergency
Sou
rce
t
yp
e
RTP
SIP/RTP
SHOUTcast / ICEcast
Audio files (E417)
Analog inputs (E417)
4
The interface for the TMH60ENA wall-mount controller is available in all the models as an option. You must add “-R” to the
ordering code.