Cisco DNCS System Release 2.8.1 3.8.1 4.3.1 Guida Utente

Use the following fields when you manage the multicast sessions for a generic QAM.

Source ID

Source that the session will use.

Session ID

 

Left Session ID field.

Enter 12 zeros (00:00:00:00:00:00).

Right Session ID field.

The Source ID you used when you added the source to the
DNCS.

Bandwidth (Mbps)

The maximum amount of bandwidth (in Mbps) that the system
should allow for this device.

This value is usually defined by your content service provider.
Requirements vary from system to system, but in general, you can
use the following guidelines:



Standard MPEG video streams use 2 or 3 Mbps.



HDTV streams use 13 Mbps.



Audio streams use 0.2 Mbps.



Modulators using 64-QAM support a total bandwidth of

26.971 Mbps for each QAM carrier.



Modulators using 256-QAM support a total bandwidth of

38.811 Mbps for each QAM carrier.



For each QAM carrier, allocate 1% overhead for PSI and

ECM insertions.

Output Carrier

The output destination of the source.

Program Number

The MPEG program number being fed into the transport stream.

This number must match the program number of the MPEG
source as defined by your content provider.

Source IP Address 1

The IP address of the first device.

Source IP Address 2

The IP address of the second device (if used).

Source IP Address 3

The IP address of the third device (if used).

Input Destination Multicast
IP Address

The multicast IP address on the GQAM modulator where sources
are input.

UDP Port

The port number on the modulator where the sources are input.