Cisco Headend Digital Broadband Delivery System
Establish a Download Sequence
4003389 Rev B
21
Broadcast Sessions
When upgrading QAM modulators that carry broadcast sessions, upgrade the
modulators in one hub (one modulator at a time), and verify its functionality before
proceeding to the next modulator in the hub.
modulators in one hub (one modulator at a time), and verify its functionality before
proceeding to the next modulator in the hub.
Use the following guidelines to determine the order in which to upgrade
modulators:
modulators:
If any QAM modulators act as spares, start by downloading QAM software
version 2.4 on these modulators.
version 2.4 on these modulators.
If your system does not have a spare QAM modulator, download QAM software
version 2.4 on the modulator carrying sessions that are least viewed.
version 2.4 on the modulator carrying sessions that are least viewed.
If you have a QAM modulator that is carrying BFS carousel sessions, download
QAM software version 2.4 to the BFS QAM.
QAM software version 2.4 to the BFS QAM.
Continue downloading the software to modulators in this hub by working your
way up to the modulator carrying sessions that are most frequently viewed.
way up to the modulator carrying sessions that are most frequently viewed.
What’s Next?
After you have established an order for downloading QAM software version 2.4
onto the QAM modulators in your system, the next step depends on the type of
sessions your QAM modulators carry (xOD/VOD sessions or broadcast sessions).
onto the QAM modulators in your system, the next step depends on the type of
sessions your QAM modulators carry (xOD/VOD sessions or broadcast sessions).
xOD/VOD Sessions
If all of your QAM modulators carry xOD or VOD sessions, you are ready to begin
downloading QAM software version 2.4 to QAM modulators. Go to Download
QAM Software to the QAM Modulators (on page 23).
downloading QAM software version 2.4 to QAM modulators. Go to Download
QAM Software to the QAM Modulators (on page 23).
Note: Because xOD and VOD sessions are not pre-configured, but are set up as
needed when a subscriber requests them, generating a list of existing sessions is not
necessary.
needed when a subscriber requests them, generating a list of existing sessions is not
necessary.