Digigram Software for IQOYA SERV/LINK 88 (Upgrades from 8 Codecs to 16) - Manual (Page 158)

IQOYA SERV/LINK user manual
Set to No, a single IP packet loss (after FEC/dual streaming recovery) had the effect to flush the jitter
buffer and fill it again. Set to Yes, two lost packets had the effect to flush the jitter buffer and fill it again.
This was generating audio silences that could be much longer than one or two lost audio frames,
especially when the buffer of jitter is quite big.
From this version, a duration value (expressed in ms) can be given to the loss parameter. If there is no
audio packet received during the “Loss” period of time, then the jitter buffer is flushed and filled again.
If there is no audio packet received during a period of time smaller than the Loss value, then audio silence
duration on the output corresponds to the number of consecutive lost frames; the jitter buffer is not
flushed. The maximum value for the “Loss” parameter is the “IP stream loss” value.
● Through SNMP, possibility to change the audio source of an IP Service that is streamed, without stopping
it.
● Possibility to adjust the size of the buffer for receiving an Icecast/Shoutcast streams, and the buffer used
to send a stream to an Icecast/Shoutcast server. This is useful to overcome some temporary issues with
the TCP connection.
● Support of the SERV/LINK with Dante I/O’s.
16.9.2 Improvement
● In the MPEG-TS stream configuration page, the value for parameter “PTS announcement period” can
now be between 50 and 10000ms (it was limited to 700ms).
This typically allows to optimize the bitrate of the TS stream with AAC audio format.
16.9.3 Fixed issues
● For an MPEG-TS stream, parameters “Local source port” and “DSCP” could not be configured for an
additional destination selected from the “Send −> IP service” page. (They were available only for the first
destination). Fixed.
● Creating a second Program (Send) while a another one is used and streamed could generate a short
break of the generated stream. Fixed.
16.10 Firmware v02.15a003- April 2018
16.10.1 Improvement since 2.13c001
● SNMP - Allows up to 70 URLs for a Send - IP service.
16.10.2 Known issues
● Fan and temperature alarms may be signalled although there is no fan or temperature anomaly
16.11 Firmware v02.13c001- April 2018
16.11.1 What’s new since 2.13a003
● Added AAC bitrates (48000 Hz, stereo)
- 116, 174, 233, 261 and 290 kbps for AAC-LC, AAC-LC_ADTS and AAC-LC_ADTS_CRC
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