Iqoya serv/link user manual 78 – Digigram Software for IQOYA SERV/LINK 88 (Upgrades from 8 Codecs to 16) User Manual
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IQOYA SERV/LINK user manual
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In case the audio format of the IP stream is not signalled in-band, it is necessary to declare if the received IP
service includes an FEC.
Select the appropriate FEC for the Type field as shown below. The payload type is set automatically.
In case FEC is not sent on the default UDP port and IP address, select “Yes” in the “ Advanced mode” field, to be
able to enter the IP address and UDP port.
Listening port
(for RTP and UDP)
Read/Write
For RTP and UDP protocols, value of the UDP port to listen to.
For Icecast/Shoutcast, value of the TCP port to listen to.
Network interface
Read/Write
Displayed if the IP address is multicast. Select the Eth interface, bond or VLAN from the list.
Jitter
(for RTP and UDP)
Read/Write
Enter the input buffering size to compensate for the jitter of the network. This value, expressed in ms, must be
at least equal to the measured jitter. In case there is FEC, it is necessary to consider the measured jitter for
“primary and FEC stream”.
Loss
(for RTP)
Read/Write
Defines the duration of consecutive lost packets until which IQOYA replaces lost frames by silence, without
flushing the buffer of jitter.
If the absence of received consecutive packets exceeds this duration, the jitter buffer is then flushed, and filled
again with received packets; this allows resynchronization on the incoming IP audio stream, but this may
generate a silence longer than the packets loss.
To avoid long audio silences when only a few consecutive packets are lost (especially for high jitter values), it is
recommended to set the Loss value to approximately 3/4 of the jitter buffer.
Synchro clock
(for RTP)
Read/Write
Select NTP in case the audio synchronization on NTP is used for decoding this stream (optional feature).
In-band format
signalling (for RTP)
Read/Write
Set this parameter to “Yes” if it is also set to “Yes” on the IQOYA encoder.
Set this parameter to “No” if it is not configured on the IQOYA encoder, or if the encoder is another brand.
payload type
(for RTP)
Read/Write
Only displayed if “In-band format signalling” is set to “No”.
Enter the payload value of the audio stream (same payload value as configured on the stream encoder).
URL
(for HTTP)
Read/Write
Only displayed when Transport Protocol is set to Icecast/Shoutcast
URL of the Icecast/Shoutcast server. Example: streamer.mysite.com.
Listening port
(for HTTP)
Read/Write
Listening port of the Icecast/Shoutcast server (usually port 80).
For a URL like:
, listening port is 6200.
Buffer
(for HTTP)
Read/Write
Buffer value in seconds necessary to decode correctly the HTTP stream. This value may depend on the HTTP
server. In case the decoding is producing audio breaks, this value has to be increased.