Scope
This document applies to the Axia IP-Audio Driver for Windows. Although the commands and principles discussed here might apply to other Axia devices, this document is specific to the IP-Audio Driver for Windows.
Version 2.10 or higher is required for AES67 support. Check the "
Description
The Axia IP-Audio Driver supports AES67 and Livewire+, with version 2.10 (or higher). This adds support for the 1ms packet time required in AES67. The standard defines what receivers shall be able to receive, but does not dictate how a transmitter should be transmitting. As long as a transmitter is sending packets which fit into the many possible AES67 defined stream it should work, right? (snicker) So the Axia IP-Audio Driver maintains the typical 2-channel transmit streams which is the most common need by the market. The legacy 8-channel surround mode, which was introduced as part of Livewire in 2003 still remains. Other channel count transmitted streams are not widely needed at the moment, but Telos Alliance is working on changes that would enable clients to use these more obscure transmission combinations. To be compliant with AES67, a product must be able to receive various streams and the Axia IP-Audio Driver supports the more obscure styles through a back end and not through the configuration UI which is documented in this manual. The Windows configuration UI is provided to support the most common usage of the driver
To access the backend, the end user would need to setup a TCP connection to the PC on port 93. This can easily be done with a windows telnet session or widely used IT applications like Putty. From a connection, the Destination (what is received from the network) can be configured to accept alternate streams. For example, to receive a unicast stream into the IP driver through the first Destination: DST 1 ADDR:”sip:6@192.168.101.73” Or a multicast address outside of the standard channel range used by the Livewire network:
DST 1 ADDR:”239.190.1.1”
The syntax is multicast/unicast value;fmt=A/B/C where;
A is L16 or L24 : either a 16bit or 24 bit depth stream
B is 44100 or 48000 : either a 44.1khz or 48khz sample stream (only 48000 is supported)
C is 1 - 8 : the number of channels in the stream. For example a stereo stream would be 2.
A 16-bit, 48khz, 8 channel stream at multicast group 239.191.10.10 would be written as follows: 239.192.10.10;fmt=L16/48000/8
Defaults are L24, 48K, 2