Cisco Headend System Release 2.5 사용자 가이드
2-6
Setting Up Digital Source Definitions In an Overlay Environment
4004831 Rev B
Build a Partially Encrypted Session,
Continued
14. In the Wrap-up window,
complete the following
fields to set up a partially
encrypted session for the
GoQAM:
•
•
MPEG Program
Number Input—Type
the MPEG program
number of the clear
input stream that the
GoQAM receives.
•
MPEG Program Number Incumbent—Type the MPEG program number
used in the encrypted input stream. The clear and encrypted program
numbers may be different, or they may be the same.
•
Bandwidth—Type the amount of bandwidth (in Mbps) defined by the
content provider for this service.
•
Encryption Percentage—Type 5 in the Audio field and 2 in the Video
field. These are the default and recommended percentages. The GoQAM
will use Cisco’s encryption method to partially encrypt the video and
audio portion of the clear stream.
Important: If you set these percentages too high or too low, you will see a
Important: If you set these percentages too high or too low, you will see a
warning message at the bottom of the window suggesting the
recommended values. Also, higher percentages require more bandwidth
on the GoQAM.
15. Click Next and then click Save. The system saves the source definition in the
database and starts the session you built at the time you specified. The Source
Definition window updates to include the new source information.
16. Will other GoQAMs deliver this content to different portions of your
network?
•
•
If yes, repeat steps 2 through 15 to build partially encrypted sessions on
each GoQAM.
•
If no, click File and select Close.
17. Go to Encrypt the New Digital Source, next in this chapter.