Cisco Headend System Release 2.7 User Guide

 

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4031374 Rev B 

The DHCT Status Reporting Utility helps system operators minimize system impact 
caused by non-responding DHCTs. This chapter provides two definitions of non-
responding DHCTs, explores some of the reasons DHCTs cannot respond, and 
describes some of the utilities that are available for system operators to use when 
managing non-responding DHCTs. 

 

A non-responding DHCT is a DHCT that is installed in the home of a subscriber and 
has been configured by the billing vendor to be capable of two-way communication. 
However, for some reason, the DHCT is unable to maintain or establish a two-way 
connection. 

Note:  Two-way communication (or connection) means that a working 
communication path exists between the headend and the DHCT, as well as between 
the DHCT and the headend. 

 

This section lists some of the conditions that may contribute to DHCTs becoming 
non-responders. 

 

Subscribers themselves may be responsible for causing some DHCTs to become non-
responders. The following list contains a few examples of conditions that might exist 
in a subscriber's home that could cause the subscriber's DHCT to be a non-
responder: 

 

Subscriber installs a one-way power amplifier — A one-way power amplifier 
blocks return transmissions. 

 

Subscriber installs a signal splitter — A signal splitter may reduce the strength of 
return transmissions or, in some cases, completely block the return transmission. 

 

Subscriber connects the DHCT to a light switch or a power strip — The DHCT 
receives no power when the light switch or power strip is turned off.