A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

ABO

Automatic Busy Override.

ACB

Asynchronous Communications Board is used to interface a 6809 Controller to the Zone Controller. It is also used to interface Simulcast Remote Site Controllers to a Prime Site Controller.

ACC

Adjacent Control Channel. In SmartZone and OmniLink systems, subscriber units will maintain a list of the Control Channels of the sites (up to seven) adjacent to the site it is operating in. The subscriber unit receives this information from the OSWs sent out on the control channel of the site it is operating in. These OSWs also indicate the alternate Control Channels at the broadcasting site.

Accounting Management

Involves the reporting of the activities of radio users on the system. Accounting Management provides the following capabilities: Air Traffic Information Access (ATIA) Data and Basic Statistics.

ADPCM card

A server resource card used in the TeNSr channel banks for Adaptive Differential Pulse Coded Modulation (ADPCM) voice compression of a 64 Kbps time slot and ASTRO audio and combining them into a DS0 at the output. This card is only used in analog/digital mixed-mode systems.

Affiliated Zone

The zone to which a radio is currently affiliated.

Affiliation

The process in which a subscriber unit signals to the system which talkgroup or site it is currently associated with.

Affiliation Group

The talkgroup to which a radio is currently affiliated.

Alias

An alphanumeric name used to identify a radio, talkgroup, site, etc. rather than using the assigned six-digit ID number.

AllStart

A talkgroup setting which requires all affiliated talkgroup members to be available for a call to begin.

Ambassador Electronics Bank

AEB. Also Embassy Switch. A Time Division Multiplexing (TDM) audio switch capable of simultaneously routing audio from multiple sources to one or more destinations. In an SmartZone OmniLink system, the Zone Controller in each zone controls the audio routing for the associated AEB in that zone.

Announcement Group

A collection of two or more talkgroups. Also called a multigroup.

Announcement Group call

A group call involving two or more talkgroups. Also called a multigroup call.

Announcement Group ID

Unique identifier assigned to each announcement group in a Motorola trunking system.

ANSI

American National Standards Institute.

APCO

Association of Public Safety Communications Officers. A national organization of communications professionals that supports and promotes public safety communications concerns.

ASIC

Application Specific Integrated Circuit.

ASTRO CAI

ASTRO Common Air Interface. A modulation type that uses an Improved Multi-Band Excitation (IMBE) vocoder to convert analog voice into a digital signal.

ASTRO-TAC

ASTRO Total Area Coverage. A comparator for audio voting in an ASTRO or mixed mode system.

Audio Interrupt

Capability that allows users of a talkgroup to interrupt the audio of the current transmitting talkgroup member.

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BER

Bit Error Rate. Used as the performance metric for the digitized form of voice.

BERT

Bit Error Rate Test.

BNC Connector

Bayonet-Neill-Concelman connector. A standardized coaxial cable connector, used for Thin Ethernet cables, ARCnet networks and for the transmission of audio and RF signals.

BSI

Base Station Identifier. A Morse code signal that is automatically transmitted every thirty minutes, broadcasting the system identification of that site. The BSI is transmitted on the lowest frequency used at that site. This signal is sent in order to conform to FCC regulations.

Busy Handling

The collection of features that manages call processing when resources are not available to grant a call.

Busy Override

A feature that allows a radio user to request that a talkgroup call be processed if resources are not available at all sites where talkgroup members are affiliated.

Busy Queuing

A method of queuing a call when resources are not available to grant the call.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

CAI

Common Air Interface -- an APCO Project 25 requirement.

Call Alert II

An "individual" signal type (alert) between two radios or between a radio and a console operator.

Call Continuation

Refers to the capability of passing active calls or busy queue designations across zone boundaries. Also termed Call Handoff, Call Coordination, or Call Reconnect.

CAS

Channel Associated Signaling.

CBR

Constant Bit Rate.

CCM

Channel Control Module. A CentraCom console module that is a direct interface for the dispatcher to make calls and to indicate received calls.

CCS

Common Channel Signaling.

CDM

Console Database Manager.

CEB

Central Electronics Bank. An intercommunications network that allows for integration of dispatch positions and the communications equipment they control.

CentraCom

The Motorola product line of console dispatch equipment, including furniture and programming.

CentraCom Gold Elite Subnet

A subnet that consists of a Windows NT-based Console Database Manager/Alias Database Manager (CDM/ADM) file server(s) and a number of Windows NT-based Operator Dispatch workstations.

CentraCom Gold Series Platform

A platform that supports Classic Gold CRT, Classic Gold Button and LEDs, and Elite operator positions.

Central Controller

Equipment at a master site or remote site that controls a set of base stations or repeaters. A central controller is typically a computer that processes inbound and outbound data traffic, assigns repeaters for voice channel access, and generally monitors and maintains order in the system.

CEPT

Conference European des Postes et Telecommunications. An association of the twenty-six European PTTs (Postes (mail), Telephone and Telegraph) that recommends communication specifications to the International Telecommunications Union (ITU).

Channel Spacing

The frequency separation between centers of RF channel assignments.

Cisco/StrataCom IGX Switch

A communications network resource management system that uses Cell Relay technology to maximize the use of the T1/E1 facility. There are three models: the IGX-8, the IGX-16, and IGX-32. The IGX will be utilized in SmartZone OmniLink systems that have three or more zones.

CIU

Console Interface Unit. Device used in 12 Kbps SECURENET systems for encryption/decryption of audio.

CM

Circuit Merit. An indication of audio quality in analog and 12 Kbps SECURENET systems.

Collocated

Pertaining to a configuration in which equipment resides in the same physical site.

Configuration Management

Refers to the capabilities which allow the user to configure operational parameters of physical and logical devices used within the system. There are two categories, Subscriber Management performed through the User Configuration System and Infrastructure Management performed through the OmniLink Zone Manager.

Connect Tone

A subaudible (below 300 Hz) tone transmitted by a radio to the system when the radio is keyed in an analog trunking system. Eight different connect tones are possible in system applications.

Connect Word

A subaudible, 150-baud data word transmitted by the repeaters to radios to permit uninterrupted communication. It is also called the low-speed handshake (LSHS) signal or low-speed data word.

Continuously Variable Slope Delta Modulation

(CVSD). A sophisticated method of analog-to-digital conversion used in 12 Kbps Secure and ASTRO Digital systems.

Control Channel

Communication channel implemented by a base station or repeater used to transmit and receive channel assignment data or process other control commands from the system. Contrast with a base station or repeater functioning as a voice channel used to transmit and receive voice information.

Controlling Zone

(CZ). The zone that coordinates the resources for a call, same as "Home Zone" for Group-Based Services; is the zone from which the voice service is being requested for Individual-Based Services.

CPE

Customer Premises Equipment.

CRC

Cyclic Redundancy Check. An error-checking technique.

CVSD

Continuously Variable Slope Delta Modulation. A sophisticated method of analog-to-digital conversion used in 12 Kbps Secure and ASTRO Digital systems.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

DAQ

Delivered Audio Quality. An indication of audio quality in ASTRO CAI systems. It is the counterpart of Circuit Merit used in analog systems.

DCB

Data Concentrator Board. A 6809 site controller board that provides a link between the central site controller and the Asynchronous Communications Board (ACB) in Simulcast subsystems.

Deaffiliation

The process in which the subscriber radio signals to the system that it is no longer monitoring the system because it is power down or it is changing mode to another system which is not part of the system.

DES-XL

The published encryption algorithm that meets federal standards for secure communications.

DIGITAC

Digital Voice Protection Total Area Coverage. A comparator used for audio voting in 12 Kbps secure or clear analog systems.

Digital Interface Unit

(DIU). Device used in Astro or mixed-mode Astro systems for encryption/decryption of audio to/from the console or MBeX.

Disconnect Tone

A subaudible, 163.64 Hz tone generated by a radio when dekeying. The controller uses this tone to start the timeout timer in message trunking. In transmission trunking, receipt of the Disconnect Tone causes an immediate release of the voice channel by the controller.

Disconnect Word

A 300-baud data word sent from the central controller on the voice channel after the timeout timer expires in message trunking. In transmission trunking the Disconnect Word is sent immediately upon subscriber dekey in a talkgroup call. The radio receives the data, mutes the receiver, and returns to the control channel.

DIU

Digital Interface Unit. Device used in Astro or mixed-mode Astro systems for encryption/decryption of audio to/from the console or MBeX.

DOD

Department Of Defense.

DPI

Direct Phone Interface. One of the telephone interconnect interfaces for the CentraCom consoles.

DSM-II Card

A voice card used for Prime Site, Remote Site, and collocated Simulcast configurations. The DSM-II provides precisely timed audio signals from a single source to multiple transmitters that will reduce distortion in overlapping broadcast areas. The DSM-II may also be used to provide an interface to the AEB for 12 Kbps Secure audio.

DSU

Data Service Unit. A device used in digital transmission for connecting data terminal equipment (DTE).

DTE

Data Terminal Equipment.

DVM

Digital Voice Modem. A modem that is capable of sending 12 Kbps encrypted signals over narrowband voice-grade telephone lines by compressing the bandwidth to prevent unauthorized monitoring of wireline communications.

DVP-XL

The Motorola propriety encryption method.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

EIA

Electronic Industries Association.

Embassy Switch

Ambassador Electronics Bank (AEB). A Time Division Multiplexing (TDM) audio switch capable of simultaneously routing audio from multiple sources to one or more destinations.

Emergency Call

The highest priority service of talkgroup call. When the emergency button of a subscriber unit is pressed and the PTT pressed, an Emergency Call is granted.

Ethernet

A method used for connecting computer systems together using local area network (LAN) technology.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Failsoft

A fallback means of communication if a site or subsystem cannot perform wide-area or site-trunking operations. In standalone remote sites and receiver voting sites, the repeaters generate the failsoft word. In Simulcast subsystems, the prime site Universal Simulcast Controller Interface (USCI) generates the failsoft word.

FastStart

Automatic busy override function--configured by talkgroup. A talkgroup call can proceed if resources are not available at all sites where talkgroup members are located. However, if there are critical sites designated for that talkgroup, the call cannot be processed until resources are available at the critical site(s).

FCC

Federal Communications Commission.

FullVision

FullVision Integrated Network Manager (INM). A subsystem of the OmniLink Network Management (ONM) Network system that allows a customer to integrate fault information from multiple subsystems into a single location under a Hewlett Packard OpenView software application.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

GOS

Grade of Service. A specification which determines how often a radio or console user will receive a busy. This is typically rated as a percentage of the total calls being processed by the system.

Group-Based Service

Talkgroup voice-based services, includes Talkgroup Calls, Announcement Group Calls, Emergency Calls, and Group Regrouping.

GUI

Graphical User Interface.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home Zone

(HZ). An assignment made for each talkgroup and radio user in the system that helps determine which Zone Controller will coordinate the call process.

HZ

Home Zone. An assignment made for each talkgroup and radio user in the system that helps determine which Zone Controller will coordinate the call process.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

ID

Identification.

IEEE

Institute of Electrical and Electronic Engineers.

IGX

Integrated Gigabit Switch. A communications network resource management system that is used with SmartZone OmniLink systems with three or more zones to provide the necessary connectivity and bandwidth management between zones.

IMBE

Improved Multi-Band Excitation. The vocoding algorithm used in ASTRO Digital systems--required for APCO Project 25 conformance.

Improved Multi-Band Excitation

(IMBE). The vocoding algorithm used in ASTRO Digital systems--required for APCO Project 25 conformance.

Inbound Signal Word

(ISW). A data burst from a radio sent on the control channel to request service from a central controller.

Individual Call

Private Call or telephone interconnect call.

Individual-Based Service

Individual voice-based services which include Private Calls, Landline-to-Radio Interconnect Calls and Radio-to-Landline Interconnect Calls.

IntelliRepeater

(IR). A Quantar/Quantro based trunked repeater with additional capability to perform the trunking functions of a remote site controller.

Interconnect

A call feature that provides radios with access to the Public Switched Telephone Network (PSTN). Telephone interconnect can be used for both landline-to-radio calls and radio-to-landline calls.

Interrupt Mode

A mode of operation for multigroup calls that can be programmed so that the system immediately terminates all currently active talkgroup calls of all talkgroups within the multigroup.

Interzone

Pertaining to functions or features that operate, or network traffic that flows, between separate SmartZone OmniLink zones.

Intrazone

Pertaining to functions or features that operate, or network traffic that flows, within the same SmartZone OmniLink zone.

IR

IntelliRepeater. A Quantar/Quantro based trunked repeater with additional capability to perform the trunking functions of a remote site controller.

ISDN

Integrated Services Digital Network.

ISW

Inbound signal word. A data burst from a radio sent on the control channel to request service from a central controller.

ITU

International Telecommunications Union.

ITU Conference

Conference Europeéne des Postes et Telecommunications. An association of the 26 European PTTs that recommends communication specifications to the International Telecommunications Union (ITU).

ITU-T

International Telecommunications Union -- Telecommunications Sector.

IZ

InterZone.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Kbps

Kilobits (1024 bits) per second.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

LAN

Local Area Network.

Low-Speed Handshake Signal

(LSHS). A subaudible, 150-baud data word transmitted by the repeaters to radios to permit uninterrupted communication. It is also called the connect word or low-speed data word.

LSHS

Low-Speed Handshake Signal. A subaudible, 150-baud data word transmitted by repeaters to radios to permit uninterrupted communication. It is also called the connect word or low-speed data word.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Master Site

OmniLink Master Site. A Master Site containing one or more sets of zone control equipment.

MBeX

Motorola Business eXchange. A device that provides telephone interconnect capabilities between radio users and the public switched telephone network (PSTN).

MBO

Manual Busy Override.

Mbps

Megabits (approximately 1,000,000 bits) per second.

MBX

Motorola Business eXchange. A device that provides telephone interconnect capabilities between radio users and the public switched telephone network (PSTN).

Message Trunking

A feature that allows radios in the same talkgroup call to continue, utilizing a hangtime to allow responding users to respond on the same RF channel assignment.

MHz

Megahertz. Frequency measure equal to 1,000,000 cycles per second.

Mixed Mode

Term used to describe support of both analog and Astro CAI traffic types.

Motorola Business Exchange

(MBX or MBEX). A device that provides telephone interconnect capabilities between radio users and the public switched telephone network (PSTN).

MSEL

MultiSelect.

Multigroup

Announcement Group. A collection of two or more talkgroups.

Multigroup Call

Announcement Group call. A group call involving two or more talkgroups.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Narrow Pulse

A technical modulation approach that allows an ASTRO voice signal to fit into a narrowband energy mask. This term only applies to ASTRO operation.

Narrowband

An RF signal that requires 12.5 kHz of spectrum bandwidth to deliver intelligible information.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Outbound Signal Word

(OSW). A 3600-baud data word containing channel assignments and other service information for subscriber radios. The central controller generates the SSW and transmits it over the control channel to radios monitoring that channel.

OSW

Outbound Signal Word. A 3600-baud data word containing channel assignments and other service information for subscriber radios. The central controller generates the SSW and transmits it over the control channel to radios monitoring that channel.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

PBX

Private Branch Exchange.

PC II

Private Conversation II. A type of Private Converstaion Call that allows a request from an initiating subscriber to be immediately granted as long as voice channels are available to be assigned to the call.

PCM

Pulse Code Modulation. The type of modulation used in digital transmission.

PLIC

Phone Line Interface Card. A card that interfaces the PSTN lines with the Motorola Business Exchange (MBeX).

Primary Talkgroup

Unique talkgroup parameter in the subscriber radio.

Prime Site

The central controlling site of a trunked Simulcast system where all audio processing and channel resource management occurs.

Priority Monitor

A feature that allows a radio to scan for "priority groups" while on a voice channel. The priority monitor group must be affiliated at the subscriber's site.

Private Conversation Call

An individual call between two radios or between a radio and a console operator.

Private Conversation II

PC II. A type of Private Call that allows a request from an initiating subscriber to be immediately granted as long as voice channels are available to be assigned to the call.

PSTN

Public Switched Telephone Network.

PTT Button

Push to Talk Button. Button on a radio the user presses in order to transmit voice information.

PTT ID

Push to Talk Identification. A talkgroup programmable function that allows dispatchers to know who is calling and allows each user's call to be logged.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Receiver Voting

A 6809 controller-based, wide-area approach, which extends the talk-in capabilities of a system.

Remote Site

A site that consists of repeaters and a site controller, which are linked to a Master Site.

Repeater

Station at a master site or remote site that broadcasts and receives RF signals to and from mobile and portable radios in the field.

Requested Sites for Dispatch

A feature that specifies, for a particular talkgroup, sites that should be considered affiliated for the given talkgroup.

Requested Sites for Individual Calls

A feature that specifies, for a particular radio user, which sites or subsystems must be included in that radio user's individual calls.

Requesting Radio

Radio sending inbound event information to the central controller.

ReSC

Remote 6809 Site Controller in a Receiver Voting or Simulcast subsystem. The remote site board that receives data link instructions from the central controller at the prime site through the Data Concentrator Board (DCB) and the Asynchronous Communications Board (ACB) for channel resource management.

RF

Radio Frequency.

Ruthless Preemption

A method of acquiring a channel for an emergency call in a busy condition. A call with a lower priority is terminated to release a channel for assignment to the emergency call.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

SDA

Simulcast Distribution Amplifier. A component used in the Simulcast audio distribution network.

Secure Call

A call that may be either 12 Kbps SECURENET or Encrypted Astro CAI. Secure operation can be applied to all call types and can be applied to both radios or consoles.

Secure Multikey

Allows different talkgroups and individuals to use different encryption keys on the same system. Multikey only applies to encrypted ASTRO CAI.

Simulcast

A wide-area trunked system configuration that uses multiple transmitter and receiver sites to extend coverage of the system. All the corresponding channel numbers at all the sites uses the same frequency.

Site Access Control

A feature that allows system administrators to control the access to sites by individuals and talkgroups.

Site or Subsystem Trunking

Trunking operation is limited to the coverage area of one site or one subsystem (simulcast or voting subsystem). This is normally caused by a failure of the link connecting the site to the Master Site.

SmartZone

A Motorola high-capacity, integrated, wide-area coverage radio system.

SmartZone OmniLink

A software-based, very-wide-area radio communications network based on the interconnection of multiple SmartZone systems.

SNIPS

SmartNet Internet Protocol Service.

SPI

Smart Phone Interface. One of the telephone interconnect interfaces for the CentraCom consoles.

SSC

Motorola System Support Center.

SSW

Background Data Word. Signal continuously broadcast over the control channel by the central controller to all active radios.

Status Tone

A 2175 Hz audio tone that indicates inactivity and control system operations in trunked systems.

System Administrator

This is the person(s) who performs the installation, configuration and maintenance of the system.

System Status Word

(SSW). Signal continuously broadcast over the control channel by the central controller to all active radios.

SZ

SmartZone.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Talkgroup

A group of radio users that can share calls and messages as a group. A talkgroup comprises a group of users who have a need to communicate with each other.

Talkgroup Call

Call involving other users within the originating user's own talkgroup.

Talkgroup ID

Unique identifier assigned to each talkgroup in a Motorola trunking system.

Talkgroup Scan

A feature that allows a subscriber unit to scan those talkgroups that have an affiliated member at the scanning radio's site. The Talkgroup Scan list(s) must be programmed in the radio.

Target Radio

The subscriber whose operation is affected by the Outbound Radio Command function or a radio to which a call or Call Alert is being initiated.

TDM

Time Division Multiplexing. Used in digital transmission for transferring voice and data.

Telephone Interconnect

A call feature that provides radios with access to the Public Switched Telephone Network (PSTN). Telephone interconnect can be used for both landline-to-radio calls and radio-to-landline calls.

TG

Talkgroup.

TIA

Telecommunications Industries Association.

Top of Queue

An emergency setup method that places an Emergency Call request at the top of the busy queue at the requesting site.

Transmission Trunking

Trunking application that requires radios in a talkgroup to return to the control channel and receive a new channel assignment after each Push-To-Talk (PTT).

TRIC

Trunked Repeater Interface Card. A module in the Motorola Business Exchange (MBeX) that interfaces up to three trunked repeaters for processing interconnect calls in SmartZone or OmniLink systems.

Trunking

A method of sharing a small number of communication paths among a large number of users.

Type I

An older signaling scheme for trunking systems. Type I trunking identifies users by fleet and subfleet.

Type II Trunking

A signaling scheme for trunking systems. Type II signaling can provide up to 65,535 individual ID numbers and 4,096 talkgroup ID numbers. Due to system constraints, only 48,000 individual IDs and 4,000 talkgroup IDs can actually be used.

Type II

Trunking Type II. A signaling scheme for trunking systems. Type II signaling can provide up to 65,535 individual ID numbers and 4,096 talkgroup ID numbers. Due to system constraints, only 48,000 individual IDs and 4,000 talkgroup IDs can actually be used.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

USCI

Universal Simulcast Controller Interface. An interface that is part of the Simulcast audio distribution network.

Unit ID

Unique identifier assigned to each radio in a Motorola trunking system.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

VOC

Voice On Control. An option that can be used with IntelliRepeaters.

Vocoder

Device in an ASTRO Digital radio that converts between an analog voice signal and a digital signal for transmission.

Voice Channel

Communication channel implemented by a base station or repeater used to transmit and receive voice information. Contrast with a base station or repeater functioning as a control channel used to transmit and receive channel assignment data or process other control commands from the system.

Voting Comparator

A device that compares the quality of input signals from different remote sites to determine the best quality signal. The comparator then votes the best signal and delivers it for distribution.

VRM

Vehicular Radio Modem.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Wide Pulse

A technical approach that allows an ASTRO voice signal to fit into a wideband energy mask. This term only applies to ASTRO operation.

Wideband

An RF signal that requires 25 kHz of spectrum bandwidth to deliver intelligible information.

Wait Mode

One of the two modes that can be programmed into the system so that an announcement group call can take place. The system applies transmission trunking to active calls of all talkgroups within the multigroup. Talkgroup calls end when all talkgroup members dekey. When all talkgroup calls have ended the announcement group call can begin.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Zone Controller

Handles the call processing, mobility, and some network management functions in an OmniLink system. Each zone in an OmniLink system has a Zone Controller.

Zone Master Site

A Master Site containing a set of zone control equipment comprising a single zone.

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