Digigram Software for IQOYA SERV/LINK 88 (Upgrades from 8 Codecs to 16) - Manual (Page 67)

IQOYA SERV/LINK user manual
67
A FEC can be selected. FEC consists in sending additional data so that the decoder can recover lost packets.
The amount of additional frames defines the recovery performance.
In case parameter “In-band format signalling” is set to “Yes”, the destination IP address and UDP port of the FEC
stream cannot be configured. The destination IP address is the same as for the primary stream, and the
destination UDP port is equal to “primary stream destination UDP port + 2”.
In case parameter “In-band format signalling” is set to “No”, the destination IP address and UDP port of the FEC
stream can be configured.
FEC on 1 stream means that additional data is sent in the IP audio stream
(in-band).
FEC on 2 streams means additional data are sent as a second IP stream.
Dual stream FEC means that the IP steam is duplicated. When no delay is
selected, primary stream and redundant stream are sent at the same time.
When a delay is selected, the redundant stream is delayed with regards to
the primary stream.
Parameter Type Description
FEC stream (Forward error Correction)
IP address Read/Write Enter the destination IP address (unicast or multicast) of the FEC stream.
Port Read/Write Enter the destination UDP port of the FEC stream.