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8 Embedded Web Server
By default, the ‘Name’ field has the friendly name of the unit followed by
a hyphen and the stream number, this can be changed by modifying the
text in the field, the name of the AoIP stream should be between 1 and 31
characters long. The level of the signal being output can be increased or
decreased using the value in the ‘Trim’ field. The value in this field can be
modified by pressing the ‘+’ and ‘-’ buttons or manually entering a value
into the input field. The value can be any whole number from -12 to 12 and
is measured in dB. If the trim is adjusted an icon will be shown next to the
name of the stream in the grid ( or ) depending on the trim level set).
Fig 8-20: ‘AoIP’ Tab of the ‘Add New AoIP Out Stream’ Window
In the ‘AoIP’ tab the stream name can again be seen in the ‘Stream Name’
field. The multicast address IP address can be seen in the ‘Multicast IP
Address’ field, this cannot be changed when ‘Auto Multicast’ is enabled
within the ‘Network’ web page, however if ‘Auto Multicast’ is not enabled,
an alternative Multicast address value can be entered into this field.
The number of channels the AoIP stream consists of can be selected from
the ‘Channels’ dropdown menu this can be set to either 2, 4 or 8, this can
be modified later if required. The DSCP of the stream can be set to allow
the precedence of the stream packets to be modified. The different values
this field can be set to is covered in the ‘Additional Information’ section of
this booklet.
The ‘Packet Time’ of an AoIP output stream can be changed. The time
between packets and the size of the packets both decrease as the value of
‘Packet Time’ decreases. Therefore, decreasing the packet time will result in
smoother audio streaming on higher latency networks. Not all devices can
handle lower packet times, if this is the case, the packet time will need to
be adjusted in order to be compatible with those devices. This packet time
can be set to either 125 µs, 250 µs, 333 µs, 1 ms or 4 ms. The ‘Packet Time’
can only be set to 4 ms when the number of ‘Channels’ is set to 2.
