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Audio/Video Standards 13-87

ANSI/EIA-721.4

: Generic Common Application Language Quality of Service

This specification for Generic CAL consists of an Application Layer containing a command lan-
guage and a Message Transfer Service Element. The specifications of the lower OSI layers are
not within the scope of this standard. However, the services provided by the lower layers affect
the performance and composition of messages issued from the Application Layer. These lower
layer service options are collectively called the Quality-of-Service (QOS) available from the
communications protocol. This portion of EIA-721 standard describes the lower layer QOS
options that may impact the Application Layer. Recommended capabilities are specified. Also, a
mechanism to convey these options to the Generic CAL Application Layer using Layer System
Management functions is presented.

ANSI/EIA-776.1

: CEBus-EIB Router Communications Protocol-Description of the

CEBus-EIB Router

This document describes the operation of a CEBus-EIB Router. This document is not intended to
define how a router should operate, but to provide an overview of the operation and the coordina-
tion of various router elements.

ANSI/EIA-776.2

: CEBus-EIB Router Communications Protocol—CEBus-EIB Router

Medium Access Control Sublayer

The CEBus-EIB Router Medium Control (MAC) Sublayer is almost identical to the CEBus or
EIB Node MAC Sublayer corresponding to the “CEBus Side” or the Router. The differences are
in the way the Router does address matching on a received packet and on the information
exchanged in some of the service primitives. Rather than copy the Node MAC specification here
and make minor changes, the Router MAC is specified by exception to the Node MAC for both
the CEBus and EIB Specifications.

ANSI/EIA-776.3

: CEBus-EIB Router Communications Protocol—CEBus-EIB Router

Logical Link Control Sublayer

This section specifies the CEBus-EIB Router Logical Link Control Sublayer interfaces to the
Router Network Layer and to the Layer System Management. The interfaces are described in
terms of service primitives which are abstract interfaces across a layer boundary. A service prim-
itive represents an exchange of information into or out of a layer. Although service primitives are
defined using a format similar to that of programming language procedure calls, no implementa-
tion technique is implied.

ANSI/EIA-776.4

: “CEBus-EIB Router Communications Protocol—CEBus-EIB Router

Network Layer

The CEBus-EIB Router Network Layer is conceptually divided into several elements, each per-
forming distinct well-defined services. Each element may be thought of as an independent pro-
cess that communicates with the other elements and protocol layers through specified interfaces.

ANSI/EIA-776.5

: CEBus-EIB Router Communications Protocol—The EIB Communica-

tions Protocol

EIB is a control system for related applications in homes and buildings. The EIB system offers
standardized basic and system components, e.g., Bus Coupling Units (BCU), Power Supply
Units (PSU), Bus Interface Modules (BIM), Routers, and RS-232 data interfaces. EIB offers the

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Audio/Video Standards

13-88 Standards and Practices

capability of constructing devices in a modular form using system devices like BCU or BIM that
support communications-specific functions. A standardized interface called Physical External
Interface (PEI) reduces the expense of developing EIB devices and allows them to be exchanged.

EIA/CEA-844

: XML Encoding of Generic Common Application Language

This standard specifies the encoding of Generic Common Application Language (CAL) into
XML. It is based on ANSI/EIA-721 and EIA-851.

EIA/CEA-851

: VHN Home Network

The R-7.4 VHN Home Network Standard defines a flexible and open network architecture and
communications protocol specification for digital devices in the home.

EIA-600 CEBus SET

: EIA Home Automation System (CEBus)

Provides the necessary specifications for the Consumer Electronic Bus (CEBus), a local commu-
nications and control network designed specifically for the home. The CEBus network provides
a standardized communication facility for exchange of control information as data among
devices and services in the home. The major motivations for its development were: a) to develop
a universal low cost method for devices in the home to communicate regardless of manufacturer;
b) to allow the introduction of new products and services to the home at minimal cost and confu-
sion to consumers; c) to meet the majority of anticipated home control requirements with a sin-
gle multi-media network standard; and d) to minimize the redundancy of control and operation
methods among devices and equipment in the home. CEBus is intended to handle existing and
anticipated control communication requirements at minimum practical costs consistent with a
broad spectrum of residential applications. It is intended for such functions as remote control,
status indication, remote instrumentation, energy management, security systems, and entertain-
ment device coordination. These situations require economical connection to a shared local com-
munication network carrying relatively short digital messages. A major objective of this
specification is compatibility. It is intended that every implementation of CEBus be able to co-
exist with every other implementation; that every device that meets this specification can com-
municate with all other CEBus devices; and the language used for control functions will be
understood by all devices. This version includes portions of IS-60 that have not been revised as
well as new ANSI approved updates.

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Audio/Video Standards