Cisco Headend Digital Broadband Delivery System Installation Guide
Overlay Systems
78-4004034-01 Rev C
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Overlay Systems
Introduction
This section describes an overlay system. This chapter includes procedures for both
the standard ASI installation and an ASI overlay installation. Therefore, in some of
the installation prompts, you will be asked to respond based on whether or not you
have an overlay system.
What Is an Overlay System?
An overlay system is one in which more than one vendor is providing applications
to an ISA system. For example, Showrunner overlay refers to sites that use the
Passport resident application, as well as SARA.
Each application normally registers all of its applications (or applets) with its
Each application normally registers all of its applications (or applets) with its
associated products on the Business Management System (BMS). Each product on
the BMS supports the registration of only one application.
In an overlay system, two vendors provide applications that register with the same
In an overlay system, two vendors provide applications that register with the same
product. Therefore, you must make sure that only one of the vendor’s applications
registers with each product on the BMS. In addition, you also need to make sure that
each unique application registers with its product on the BMS.
You meet these requirements by responding appropriately to the prompts that apply
You meet these requirements by responding appropriately to the prompts that apply
to overlay and by configuring applets for overlay support. For more information on
configuring applets, refer to the xOD 1.6 Configuration Guide (part number 4004032).