|Manufacturer||Axia Audio, a division of Telos Systems|
|Ethernet data rates||Fast Ethernet, Gigabit Ethernet|
|Minimum latency||0.75 ms|
|Maximum sampling rate||48 kHz|
|Maximum bit depth||24 bits|
Livewire is an audio over Ethernet system created by Axia Audio, a division of Telos Systems. Livewire was introduced in 2003 and is used primarily in radio station applications. Designed as a superset of functionality utilising common protocols and formats, Livewire is available as an open standard through Axia's partner program and is interoperable with other RAVENNA standards-based systems and equipment.
Livewire provides "anywhere to anywhere" routing of audio, using multicast sources and destinations of uncompressed PCM or AAC audio globally visible on a LAN. Audio is carried using standard ethernet 8-conductor cables and RJ-45s, which are smaller than XLR interconnects, improving flexibility while reducing the amount of wiring required for installations.
|67, 68||UDP||BOOTP Server/Client||Remote IP address assignment|
|93||TCP||Livewire Routing Protocol||Also provides transparent passing of custom messages, similar to the Ancillary Data Transmission feature of AES3|
|123||UDP||Network Time Protocol|
|514||UDP||Syslog||Activity logging to a syslog receiver.|
|2055||UDP||18.104.22.168||Multicast-based GPIO (CMsg2 protocol)||GPIO commands, GPIO node → console-type endpoint|
|2060||UDP||22.214.171.124||Multicast-based GPIO (CMsg2 protocol)||GPIO commands, console-type endpoint → GPIO node|
|4000||UDP||Livewire Advertisement and Source Allocation Protocol||Verbose advertisement and source allocation requests|
|4001||UDP||126.96.36.199||Livewire Advertisement and Source Allocation Protocol||Periodic and verbose announcements;
Source allocation state announcements and responses
|4002||UDP||188.8.131.52||Engine Supervision Protocol|
|4010||TCP||Livewire Control Protocol|
|4011||UDP||184.108.40.206||LWCP for Accessory Modules||Module → Console|
|4012||UDP||220.127.116.11||LWCP for Accessory Modules||Console → Module|
|5004||UDP||239.192.x.x||RTP Livewire Audio||Last two address octets pertain to Axia channel ID, e.g. 9999 = 39 15 (hex 27 0F)|
|7000||UDP||Livewire Clock||One device assigns itself as LAN-wide reference, all other devices slave to it|
|9997||TCP||Protocol logging||Debug protocol logging for Element|
- "Best Practices in Network Audio" (PDF). Audio Engineering Society. 2009. Retrieved 2010-05-05.
- Introduction to Livewire, Axia Audio, April 2007, retrieved 2011-06-21
- Axia Debuts Livewire Limitless License, Radio, 2011-04-07, retrieved 2011-07-10
- "Axia partners". Axia Audio. Retrieved 22 June 2011.
- Matt Rockwell (2011-07-01). "Axia Audio Element Leads New Studio". Radio World. Retrieved 2011-07-10.
- "Configuring Windows Firewall for use with the Axia IP-Audio Driver". Axia audio. 31 October 2006. Retrieved 05 November 2013.
- "Axia IP-Audio Driver for Windows, rev. 2.5 manual". Axia audio. August 2010. Retrieved 05 November 2013.
- Steve Church; Skip Pizzi (10 September 2012). Audio Over IP: Building Pro AoIP Systems with Livewire. CRC Press. pp. 4–. ISBN 978-1-136-03057-4.
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