Cisco Headend System Release 2.7 用户指南
4011413 Rev B
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About Enhanced Channel Maps
About Enhanced Channel Maps
If the set-top box contains the prerequisite client software listed in Prerequisites for
Enhanced Channel Maps (on page 4), you can use enhanced channel maps to assign
channel maps based on a number of criteria:
Enhanced Channel Maps (on page 4), you can use enhanced channel maps to assign
channel maps based on a number of criteria:
PowerKEY® package authorization or Entitlement ID (EID)
Digital Home Communication Terminal (DHCT) model
DHCT version
Physical hub assignment, virtual hub assignment, or bouquet assignment
MAC address
Group Definition Rules
When you set up enhanced channel maps for your facility, you must build a set of
group definition rules. Beginning in SR 2.7/3.7/4.2, you can use a DNCS WUI to
build these rules. If you are using an earlier system release, you can create the group
definition rules manually. When you create these rules using the WUI, the following
events occur:
1 The DNCS stores these rules in a file and posts the group definition rules file on
group definition rules. Beginning in SR 2.7/3.7/4.2, you can use a DNCS WUI to
build these rules. If you are using an earlier system release, you can create the group
definition rules manually. When you create these rules using the WUI, the following
events occur:
1 The DNCS stores these rules in a file and posts the group definition rules file on
the BFS for the DHCT to read.
2 When the DHCT boots up, it looks for this file on the Broadcast File Server (BFS)
and reads the file if it exists. During normal operation, the DHCT also monitors
this file for modifications, so that the DHCT does not need to reboot in order to
receive any changes.
this file for modifications, so that the DHCT does not need to reboot in order to
receive any changes.
3 If the DHCT finds a rule that matches the DHCT's configuration, then it uses the
first rule that matches to apply the channel map associated with that rule. If the
DHCT does not find a rule that matches its configuration, it uses the channel map
for the hub where it resides.
DHCT does not find a rule that matches its configuration, it uses the channel map
for the hub where it resides.
Important: The order of the rules in the group definition rules file is very important:
the DHCT stops searching as soon as it finds a matching group definition rule.
Therefore, if a DHCT matches more than one rule, it chooses the channel map
associated with the first matching rule in the list. Be sure that you build the group
definition rules file with this property in mind.
the DHCT stops searching as soon as it finds a matching group definition rule.
Therefore, if a DHCT matches more than one rule, it chooses the channel map
associated with the first matching rule in the list. Be sure that you build the group
definition rules file with this property in mind.
This document explains how to associate channel maps rules and how to define
group definition rules.
group definition rules.