Cisco Multi-Stream CableCARD Module テクニカルリファレンス
Operations Alert Bulletin
Recommended BFS QAM Frequency
Rate for Multi-Stream CableCARD
Code Download
Recommended BFS QAM Frequency
Rate for Multi-Stream CableCARD
Code Download
Background
Multi-Stream CableCARD™ (M-Card™) modules running a software release
prior to OS 1.5.2 (all versions of 1.5.2 software) will not recognize a Code Version
Table (CVT) message from a BFS QAM whose output frequency is below 204
MHz. The CVT message must be recognized for a download to occur.
Recommendation
Sites that have M-Card modules running a software release prior to OS 1.5.2 and
have BFS QAMs with an output frequency below 204 MHz, must change the
output frequency to a value above 204 MHz in order to successfully download
M-Card software. Once the M-Card module is running a version of OS 1.5.2 or
later software, it will recognize a CVT at any operational output frequency.
To prepare for a M-Card software update, operators should do the following.
To prepare for a M-Card software update, operators should do the following.
Determine the BFS QAM output frequency. If it is below the threshold, read
on. If not, this Operations Alert Bulletin does not apply to you.
Determine if all of your M-Card modules are running a version of OS 1.5.2 or
later software. If they are, this Operations Alert Bulletin does not apply to you.
Contact Cisco
®
Services to obtain the latest release of M-Card software and to
schedule their assistance in downloading software to your M-Card modules.
During a maintenance window, complete the tasks on the following pages to
change the output frequencies, and restore them, if necessary, after the
download.
Note: Follow the instructions provided by Cisco Services to download
Note: Follow the instructions provided by Cisco Services to download
software to M-Card modules.