Cisco DNCS System Release 2.7 3.7 4.2 设计指南
5-4
Staging DOCSIS-Capable DHCTs
4000358 Rev B
Load Authorization EMMs,
Continued
DhctInstantHit
The DhctInstantHit transaction, sometimes called an “instant hit,” initiates the
transmission of all existing EMMs to the DHCTs. The DNCS and some billing
systems can send an instant hit. During a DhctInstantHit, the DNCS transmits the
EMMs regardless of the Admin Status of the DHCT. The DNCS transmits the
PowerKEY information for the DHCT on the out-of-band QPSK or DSG CMTS
channel.
You should send a DhctInstantHit transaction in the following circumstances:
•
You should send a DhctInstantHit transaction in the following circumstances:
•
The ModifyDhctConfiguration transaction was initiated before the DHCT was
ready to receive the EMMs.
•
You wish to refresh the 30-day time stamp for the Service Authorization EMMs on
a staged DHCT.
•
You wish to perform a DhctInstantHit during certain troubleshooting situations,
such as the following:
−
−
You are unable to enter the DHCTs into the billing system.
−
You are staging the DHCT in the subscriber’s home.
Fast Refresh List
The Fast Refresh List is a queue of EMMs that the data carousel within the Broadcast
File Server (BFS) distributes during or after the OS and ResApp downloads. The
DNCS rebuilds the Fast Refresh List every 5 minutes. During the staging process, the
billing system sends the ModifyDhctConfiguration transaction to the DNCS to add a
DHCT to the Fast Refresh List. When the DNCS rebuilds the Fast Refresh List, the
data carousel sends PowerKEY information to the new DHCT.
Every 5 minutes, the DNCS searches for DHCTs that have the following settings and
Every 5 minutes, the DNCS searches for DHCTs that have the following settings and
adds them to the Fast Refresh List:
•
•
FRL enabled
•
Admin Status set either to In Service Two-Way or In Service One-Way (set by the
ModifyDhctAdminStatus transaction)
The data carousel uses the inband QAM channel to distribute these EMMs to the
DHCTs either during or after the OS and ResApp download.
If a DHCT boots and an Entitlement Agent (EA) is not present, the DHCT tunes to
If a DHCT boots and an Entitlement Agent (EA) is not present, the DHCT tunes to
the inband QAM data channel and attempts for 5 minutes to receive its PowerKEY
information. The 5-minute tuner lockout begins after the DHCT receives its System
Information (SI) and BFS data. If the DHCT was enabled to use the Fast Refresh List
and the Fast Refresh List has been rebuilt with the PowerKEY information for the
DHCT, the DHCT receives its information during this time.
EMMs remain on the Fast Refresh List for 48 hours unless you send a
EMMs remain on the Fast Refresh List for 48 hours unless you send a
ModifyDhctConfiguration transaction to remove the DHCTs from the Fast Refresh
List. The Fast Refresh List can hold up to 250 DHCTs at one time.