NSG 9000-6G - Harmonic Inc
NSG 9000-6G - Harmonic Inc
NSG 9000-6G - Harmonic Inc
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Chapter 4 Configuring Applications<br />
VOD Application<br />
1. Select Applications > VOD > Settings tab.<br />
Define session inactivity time<br />
2. In Session Inactivity Teardown Threshold (Sec), enter the allowed period of time in seconds<br />
for session inactivity. In case the interval is longer than the indicated time, the session is<br />
removed from the output port.<br />
3. By default Allow Auto Detection is selected. Verify that this option is selected to allow auto<br />
detection, in the input, of the output QAM according to the indicated UDP port.<br />
4.2.2 Defining MPEG Parameters<br />
4.2.2.1 PID Remapping<br />
The PID Remapping option allows you to remap according to a specific paradigm or<br />
randomly. In either case, the <strong>NSG</strong> prevents the assignment of conflicting PIDs.<br />
• Paradigm - The elementary stream PIDs are determined according to the ATSC A/53<br />
standard, which defines the PID remapping rules that are listed in the table below:<br />
Formula<br />
Service ID = 0xN<br />
PMT PID = LeftShift (N) = 0xN0<br />
PCR=Video=PMT+1= 0xN1<br />
Audio 1&2 = PMT+ 4/5 = 0xN 4,0xN5<br />
ECM=PMT+9= 0xN9<br />
Example<br />
Service ID = 0x34<br />
PMT PID = 0x340<br />
Video = 0x341<br />
Audio 1&2= 0x344, 0x345<br />
ECM PID= 0x349<br />
NOTE: The Paradigm mode is not suitable for processing services with service IDs greater than 510. If you<br />
are using service ID that are greater than 510 you must use the Random mode.<br />
• Random - The <strong>NSG</strong> remaps incoming PIDs to PID numbers that are randomly selected<br />
from a predefined range. Define the range in the PID Range field. The PID range is written<br />
in hex-decimal format. Range of acceptable values is 0x21 to 0x1FF0.<br />
Changing the PID remapping mode may interrupt the streams currently flowing through the<br />
device. It is recommended to change the remapping mode only when no active streams are<br />
flowing through the device.<br />
In addition, changing the PID remapping may affect the operation of some STB (Set-up<br />
Boxes.) Various STBs operate better with a specific mode. If you suspect such a case, call the<br />
STB vendor before changing the PID remapping.<br />
© 2012 <strong>Harmonic</strong> <strong>Inc</strong>. 75 <strong>NSG</strong> <strong>9000</strong>-<strong>6G</strong>, Version 2.7, Rev B
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