Cisco Headend System Release 2.7 Release Notes

 

4019365 Rev B 

9 

 

Out-of-band system information (SI) now carries a Daylight Saving Time (DST) 
descriptor for cable hosts with a CableCARD module 

In earlier system releases, every DHCT received the default hub DST rule regardless 
of the hub to which they were associated. Beginning with SR 3.8, you can define 
specific DST rules for each hub that distributes DST rules out-of-band. Every 
CableCARD Host that receives DST rules out-of-band will be able to receive a 
specific DST rule that is tailored for its hub. 

Important: This feature does not affect DST rules that are distributed by Program 
and System Information Protocol (PSIP).  It also does not affect legacy DHCTs that 
do not include CableCARD modules. In these situations, DHCTs will continue to 
receive the DST rule for the default hub. 

The SCTE 65 requirements mandate support for DST descriptors for out-of-band 
(OOB) system information (SI). The DNCS implements support for hosts with 
CableCARD modules by populating the OOB SI daylight saving time (DST) 
descriptor based on the hub DST zone. 

To define a specific DST rule for a hub, you must create a DST rule to define the start 
and end dates for DST and assign the DST rule to a hub, just as in earlier system 
releases.  You should also check the Hub Summary window and confirm that the 
correct settings are selected for the Timezone and DST Zone ID fields.