Codec Tieline ViA User Manual page 57

Send/Return Link Quality
Send and Return link quality numbers in the Audio Screen Info screen assist in determining if
there is a problem at either end of a connection.
For example, on an IP connection the Return indication represents the audio being received from
the network locally (i.e. audio data is being sent by the remote codec). Conversely, the Send
indication represents the audio data being sent by the local codec (i.e. being downloaded by the
remote codec). To ensure a stable connection, try to maintain a reliable reading of 80 or higher for
both the Send and Return reading.
Important Note:
· The Return link quality reading is the same as the Local (L) setting displayed on a G3
codec.
· The Send link quality reading is the same as the Remote (R) setting displayed on a G3
codec.
Feature
1 Lost Packets
2 Empty
Buffer)
3 Late Packets
4 FEC Packets
5 1 minute
6 10 minutes
Important Note:
· Increasing the minimum jitter buffer depth may address the issue of packets arriving
late.
· If the jitter buffer, FEC or the connection bit rate is changed, we recommend assessing
a minute of recent connection performance in preference to 10 minutes of historical
connection performance. 10 minutes of data will include connection settings which may
no longer be relevant. 'Packet arrival history' is cleared when you hang up a connection.
Following is a packet arrival analysis table with solutions for any noticeable packet loss statistics
displayed on the screen.
© Tieline Research Pty. Ltd. 2020
Description
Packets sent that failed to arrive
(Jitter Indicates how often the jitter buffer 'reservoir' empties causing loss of
audio
The number of packets that arrive late, i.e. after audio play out
Indicates the number of forward error correction (FEC) packets that
have been replaced if it is enabled in the codec
Statistics listed for the last minute of network activity
Statistics for the last 10 minutes of network activity
ViA User Manual v3 57