July 2015 - Ed.1.2
E430 IP music and announcements server. User’s manual
Page 1
Chapter 1 : Introduction
The EQUITEL audio over IP devices family allows the transmission and reception of music channels and audio
messages over IP, using standard IP network hardware.
These devices provide a unified solution for transmitting audio signals such as background music, advertising and
informational messages, to one or more destinations.
By supporting multiple protocols and encoders, these devices are indicated in broadcasting applications, VoIP
and Internet radio. In addition to leveraging existing infrastructure and devices such as SIP phones.
Music server (E430), Encoder (E421) and console (E495 / E497) send audio input through the network. This
process is known as "streaming". Streams can also be generated by other devices, like a PC running an
application or a SIP phone.
Decoders (E411, E413 or E415) can receive selected channels (i.e. "streams") from the network and convert it
back to an analog audio signal.
Mixer (E417), besides the same features than the decoders, includes the option to use audio coming from files
stored in a USB memory or analog signals in its MIC or LINE inputs.
The selection of the actual stream, local file or analog signal to be sent to the output is made based on a
powerful but very easy to configure priority schema.
The figure shows a schematic of this family of devices usage:
Figure 1 - EQUITEL Audio over IP devices usage schema