Chapter 5 Web GUI Setup and Monitoring
Choose User String to use the SAP string as the channel
name, defined in the Announce User's Title below.
Otherwise, choose SDT channel to use the SDT string as the
channel name.
If User String is selected as the Announce Title Source, enter
the SAP identifier (ID)/string, up to 31 characters.
5 Click OK.
Configuring Forw ard Error Correction Settings
Note: This feature is for the D9854-I only.
Due to its nature (occasionally packet loss, packet reordering, and/or stream jitter) a
traditional IP network is not the perfect channel for transmitting broadcast-quality
compressed video content. Forward Error Correction (FEC) developed by the Pro-
MPEG forum is a unique technology to enhance the robustness of video traffic over
IP networks. The D9854-I supports Pro-MPEG FEC Code of Practice (COP) #3
release2 and SMPTE-2022, which is based on the exclusive or (XOR) boolean
operator applied to a number of data packets. When a FEC packet is created by
performing the XOR boolean operation on a number of RTP packets, a missing RTP
packet can always be reconstructed by performing the XOR operation on the FEC
packet and the remaining RTP packets.
FEC = RTP1 XOR RTP2
RTP1 = FEC XOR RTP2
RTP2 = FEC XOR RTP1
1 In the MPEG over IP Output Stream page, click the radio button of the stream
you want to configure FEC settings.
2 Click FEC. The FEC Settings dialog is displayed.
3 From the FEC Mode drop-down list, choose an error protection profile.
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