Cisco Cisco D9824 Advanced Multi Decryption Receiver Guida All'Installazione

 

210 

OL-29015-01 

Announce User's Title 

If User String is selected as the Announce Title Source, enter 
the SAP identifier (ID)/string, up to 31 characters. 

5  Click OK. 

 

Configuring Forward Error Correction Settings 

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 D9824 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, select the stream you want to 

configure FEC settings. 

2  Click FEC. The FEC Settings dialog box is displayed. 

 

3  From the FEC Mode drop-down list, choose an error protection profile.