WEB Interface 101
ID: um_t2gateway CP560 DVB-T2 Gateway User’s Manual Rev. 2.2 (3686)
Protocol
Indicates RTP if the received data contains an RTP header, UDP otherwise.
TS packets per frame
The number of transport stream packets per IP frame and the size of the transport stream
packets in the incoming stream.
RTP sequence errors
A counter showing the number of RTP sequence errors caused by lost packets or packets
received out of order. A value of zero indicates that all packets are received in correct
sequence.
RTP max jump
The max jump in RTP sequence number between two consecutive packets received.
Duplicated IP frames
The number of received IP frames with RTP sequence numbers which have already been
received.
Lost IP frames
A counter showing the number of IP frames that have been lost, i.e. lost and not corrected
by the unit.
Corrected IP frames
A counter showing the number of IP frames corrected by the FEC engine.
Max burst loss
The maximum number of consecutive packets lost.
Number of resyncs
The number of times the buffer has been re-synchronised. Re-synchronisation causes a
disruption in the picture. The most typical reason for a re-sync is when no data is received
and the buffer runs empty. The reason for re-syncs is tagged in the alarm details for the
No Lock alarm.
8.5.2.3.2 FEC
The FEC sub page is shown in Figure 8.53. This page displays the status of the forward error
correction processing of the IP input.
The Configuration field provides a single check box to enable or disable input FEC processing.
If this box is not checked all other fields in this page is greyed out, i.e. not applicable.
The Status“ field shows the overall result of the FEC processing:
Lost IP frames
The number of IP frames lost. I.e. FEC processing has not been able to recover these
frames.
Corrected IP frames
The number of IP frames that were successfully regenerated by the FEC processing.
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