Cisco Headend Digital Broadband Delivery System Release Notes
Upgrade Process Overview
4003389 Rev B
9
Impact of TVs with QAM Tuners
When upgrading QAMs to new releases of software, you must reset the QAMs in
order for the devices to download the new software from the DNCS. When the
software download is complete, the DNCS then recreates any broadcast sessions that
were active on the QAMs. The DNCS also activates encryption for any secure
services that were running on the QAMs.
order for the devices to download the new software from the DNCS. When the
software download is complete, the DNCS then recreates any broadcast sessions that
were active on the QAMs. The DNCS also activates encryption for any secure
services that were running on the QAMs.
An increasing number of TVs are being manufactured and sold with QAM tuners
that can access services which are not properly encrypted. Therefore, as a part of the
upgrade process, we encourage you to verify that the DNCS re-establishes
encryption for all secure services on the upgraded QAMs. This extra step ensures
that no potentially objectionable content can be viewed inadvertently when using a
TV that is equipped with a QAM tuner.
that can access services which are not properly encrypted. Therefore, as a part of the
upgrade process, we encourage you to verify that the DNCS re-establishes
encryption for all secure services on the upgraded QAMs. This extra step ensures
that no potentially objectionable content can be viewed inadvertently when using a
TV that is equipped with a QAM tuner.
For further assistance, refer to the following procedures found later in this chapter:
Verifying the Functionality of QAM Modulators That Carry Broadcast Sessions
(on page 29)
(on page 29)
Verifying the Functionality of QAM Modulators That Carry xOD or VOD
Sessions (on page 30)
Sessions (on page 30)
Process Overview
This section provides an overview of the process required to upgrade to QAM
software version 2.4.
software version 2.4.
CAUTION:
If upgrading more than one QAM modulator, download QAM software
version 2.4 to one modulator and verify its functionality before attempting to
download QAM software to another modulator. Verifying the functionality of
one QAM modulator at a time enables you to better isolate any failures that
may occur and enables you to minimize service interruptions.
If upgrading more than one QAM modulator, download QAM software
version 2.4 to one modulator and verify its functionality before attempting to
download QAM software to another modulator. Verifying the functionality of
one QAM modulator at a time enables you to better isolate any failures that
may occur and enables you to minimize service interruptions.
Pre-Upgrade Tasks
1 If you are installing from a CD, verify the integrity of the installation CD. For
1 If you are installing from a CD, verify the integrity of the installation CD. For
further instructions, refer to the installation and upgrade documentation for your
system release.
system release.
2 Generate a Doctor Report using the –av option to verify system stability and
functionality.
Important! If new or unexpected errors appear in the Doctor Report, contact
Cisco Services before upgrading your QAMs.
Note: For further instructions on running the Doctor Report, refer to Chapter 5,
Analyze System Configuration With the Doctor Report, in the DBDS Utilities
Installation Instructions and DNCS Utilities User’s Guide.
Cisco Services before upgrading your QAMs.
Note: For further instructions on running the Doctor Report, refer to Chapter 5,
Analyze System Configuration With the Doctor Report, in the DBDS Utilities
Installation Instructions and DNCS Utilities User’s Guide.