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Genie Distribution WNET Manual v3
© Tieline Research Pty. Ltd. 2020
USB File Backup Audio
The codec features a USB 2.0 Host port for connection to USB sticks and selected external
devices. Backup connections and other output audio source options are configured using the web-
GUI and this is outlined in
Configuring Mono or Stereo Peer-to-Peer Programs
.
USB file backup is automatic and occurs:
1. If encoded audio streaming from a remote codec is lost for a time period predetermined
within the web-GUI (default 30 seconds).
2. Immediately if a connection to another codec is lost, i.e. someone hangs up the call at the
remote codec.
3. Immediately if the LAN cable is removed from the local codec.
The codec
Home
screen indicates failover to a USB device has occurred by displaying
(F)
in the
Cxns
display. The audio file will play continuously in loop mode until a new connection is created.
Backup USB failover will continue as you attempt to dial a new connection and only ceases when a
successful reconnection is made.
Important Notes for File Playback:
·
A single partition FAT32 formatted USB stick must be used.
·
Ensure MP3 recordings used are not variable bit rate files.
·
When you create your MP2 or MP3 files please ensure that the audio levels match the
audio scale of your codec connection and that peaks average at the correct levels,
because IGC is only used on audio inputs and not file playback. File playback audio is
sent directly to the codec outputs and therefore IGC is not available.
·
USB backup audio is only sent to the outputs of the local codec to which a USB stick is
attached. USB file audio is not sent to encoders and cannot be transmitted via an audio
stream to another codec.
·
The USB stick can be inserted or removed at any time as long as the codec is not
already playing audio in failover mode. Removing the USB stick while audio is playing
from it will result in poor audio quality and should be avoided. If it is removed accidentally
you must reboot the codec to ensure USB failover will work in future.
·
If you enter a single file name ensure you add the file extension, e.g. "test.mp3", or the
file will not play back.
·
If you enter a directory name, all the files within the directory will be played back. We
recommend you save all audio files as a playlist and link to this if you want them to play
out sequentially. Please note that "M3U" is the playlist file format supported by the
codec.
·
File playback will occur automatically if the silence threshold parameters are breached; if
the codec is not connected for any reason file playback will commence. To stop file