Cisco DNCS System Release 2.8.1 3.8.1 4.3.1 User Guide

Important: This procedure can be used only for an RCS. If you do not use an RCS, follow another procedure to

 for

the central DNCS site and for each remote site in your system.

A BFS QAM modulator receives BFS data, modulates the data onto an RF carrier, and then sends it downstream
to all DHCTs on the headend. Each headend in your network must have a BFS QAM modulator associated with
ASI card on the DNCS. Otherwise, some DHCTs in your network will not receive BFS data for that headend.

Before you begin, you must have your network map. You must also have the following information:

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IP address for the QAM modulator (from your system administrator)

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Subnet mask for the QAM modulator (from your system administrator)

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MAC address for the QAM modulator (click for information on 

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The output transport stream ID of the ASI card on the DNCS or RNCS/LIONN

Note: All of this information should be recorded on your network map. However, if it is not, contact your system
administrator to obtain the information.

Be sure to allow yourself adequate time to complete this procedure. To add a BFS QAM modulator to the DNCS,
you must complete the following tasks in order.

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We recommend the following regarding BFS QAM modulators:

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Make sure the BFS QAM modulator is not assigned to a specific hub, but that it sends BFS data to all

hubs in the headend.

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When you activate the BFS QAM modulator, make sure that the Allow SI option is set to No. In an

RCS, system information (SI) is carried on the out-of-band data path through a QPSK modulator.