Instreamer

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Contemporary Instreamer, front view. RS-232 and headphone connectors are visible.

Rear view of contemporary Instreamer. From left to right: Ethernet, coaxial S/P-DIF, optical S/P-DIF, stereo line out, power

The old model of Instreamer which is not manufactured anymore.

Instreamer is an embedded device manufactured by a Swiss company Barix AG. A small aluminium box converts audio from an external source (microphone, line in, or optical S/P-DIF) into an audio stream which can be carried over a LAN or the Internet.

The original Instreamer was in a golden box and was discontinued because of RoHS. The contemporary product is in a smaller, silvery box and is designated Instreamer 100. The audio conversion is done by Micronas MAS3587 codec.

1 Technical data
2 BRTP
3 Notable Uses
4 External links

[edit] Technical data

RTP, HTTP, Icecast, Shoutcast, TCP, UDP as transport protocols
MP3, WMA, G.711 and PCM audio formats
165mm x 38mm x 127mm size
12V DC 0.5A

[edit] BRTP

Instreamer can act as a source for unstandardized BRTP protocol. BRTP is RTP with a simple non-standard extension. The listener sends one UDP datagram to the source to subscribe to RTP stream. Instreamer can handle 64 BRTP streams as opposed to only 8 Internet radio streams over HTTP. The BRTP can be received by Exstreamer embedded device or a UNIX PC if Netcat is used to generate the subscription packet before start of the application.

[edit] Notable Uses

Automatic podcasting of classroom lectures
Internet radio with a colocated Icecast or Shoutcast server. Instreamer itself can serve only 8 listeners.
Church broadcasting