Nortel Networks RTU-292 operation manual Glossary

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RTU-292 Operations Manual

 

Glossary

 

 

Adaptation

The process whereby the RTU-292 DSP algorithms detect reflected signal information in a

 

connected line and tune the DSP hybrid for a broadband null with minimum reflection.

 

 

COR

Carrier Operated Relay - A receiver signal that gives a positive indication that a carrier or signal

 

is being received and that the receiver is unsquelched. Same as COS.

 

 

COS

Carrier Operated Squelch - See COR.

 

 

CTCSS

Continuous Tone Controlled Squelch System. A squelch system using EIA Standardized sub-

 

audible tones in the 67Hz to 250Hz frequency range. An FM squelch which opens only when

 

the proper sub-audible tone is present.

 

 

DIP Switch

Dual In-Line Package Switch (Also “dipswitch”)- A multi-unit switch that fits into a standard

 

DIP integrated circuit footprint. It usually contains eight or ten individual switches.

 

 

DTMF

Dual Tone Multi Frequency - The standard touch-tone telephone dialing method.

 

 

DSP

Digital Signal Processing (or Processor).

EIA

Electronic Industries Association.

 

 

Full Duplex

A communications system that can operate in transmit mode and receive mode simultaneously,

 

with different frequencies for transmit and receive. See also Half Duplex and Simplex.

 

 

Half Duplex

A communications system that uses different frequencies for transmit and receive operation, but

 

can not transmit and receive at the same time. See also Full Duplex and Simplex.

 

 

Hangtime

A system with hangtime will remain in the transmit mode for the duration of the set hangtime

 

beyond the time indicated by any keying inputs. The hangtime prevents transmitter unkey

 

during brief pauses in the transmission.

 

 

Key

To key a transmitter means to cause it to transmit.

LED

Light Emitting Diode.

 

 

LMR

Land Mobile Radio.

 

 

Mute

To quiet or inhibit audio.

PCB

Printed Circuit Board.

 

 

PTT

Push-to-Talk. An active PTT signal causes a transmitter to key.

 

 

RX

Receiver or Receiving.

Simplex

A communications system that uses the same frequencies for both transmit and receive

 

operation. A simplex system can obviously not transmit and receive simultaneously. See also

 

Full Duplex and Half Duplex.

 

 

SNR

Signal-to-Noise Ratio.

 

 

Squelch

A means of detecting audio and causing some action when it is present, such as keying a

 

transmitter or unmuting an audio path.

 

 

TX

Transmit or Transmitter.

 

 

VMR

Voice Modulation Recognition. A type of squelch, which is activated only by spoken words and

 

not by tones, noise, or other audio information.

 

 

VOX

Voice Operated Xmit (Transmit). A circuit or algorithm that causes a transmitter to key or some

 

other action when voice or other signal is present. This squelch type is activated by any audio

 

signal, and is not restricted to voice only.

 

 

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JPS Communications, Inc.

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Contents JPS P/N Revision July JPS Communications, IncPhone 919 Fax 919 Proprietary StatementTable of Contents RTU-292 Theory of Operation Front Panel Buttons and Indicators Schematic Diagrams List Of Figures List of Tables Glossary This page intentionally left blank General Scope DescriptionAssemblies Main BoardTelephone Interface Handset/Speaker Interface Power Supply SectionRadio Interface DSP ModuleQty Part Number Equipment and Accessories SuppliedOptional Equipment Not Supplied OptionsRTU-292 Specifications General Unpacking and InspectionReshipment of Equipment Installation Overview Installation ConsiderationsFCC Part 68 Regulations Feature / Function Adjustment Default Setting 1RTU-292 Factory Default SettingsInput Power Selection Power RequirementsDC Input Power Selection Line Voltage SelectionConfiguring the RTU-292 Programming Mode Setup ParametersSetting Telephone Send and Receive Levels Factory default settings are indicated by an asterisk Recommended Phone Line SettingsType of System Telephone Send/Receive LevelsVOX Hangtime VOX HangtimeVOX Sensitivity VOX SensitivityDial Mode Dial ModeTelephone Ring Volume RX Line Input ImpedanceSW1-3 Radio Control Off Disabled Enabled Radio Control ModeFull/Half Duplex SW2-8 Full/Half Duplex Off Full Duplex10Password Protection Password Protection11Voice Prompts Enable Voice Prompts14TX Level Set-up Mode 12Local Phone EnableInterconnect Information 13 Local Phone Ringthrough15J1 TEL Line RJ-11C Telephone ConnectionPin Function Radio ConnectionHandset Connector 16P1-RADIO DB-9 Male17J7 Handset RJ12C Jack 18Terminal Block 6 Position Terminal Block19P2 RS-232 Connector DB-9 Male Audio Level Setup and AdjustmentsSetting the Transmit Level 5 RS-232 Connection10.1.2 Setting the Receive LevelRTU-292 Operations Manual Outline Dimensions Control and Connector Locations Location Of Internal Option Settings Internal Option Setting Details Audio Interface Wiring Diagram Interface Details Installation Checklist Options Installation and ConfigurationInstallation Checklist Front Panel CONTROLS, Indicators and Connectors Phones Volume Control Speaker Volume ControlKeypad TEL Line ButtonsAuto ANS Button Speaker ButtonsAudible Ring Button KEY Pushbutton1 P1 Radio Connector Rear Panel Connectors4 J2 Local Phone Connector 7 P1 AC Power ConnectorOperation Overview OperationUSE of the RTU-292 Speaker to Monitor Audio Placing a Telephone CallConnecting the Radio to the Telephone Line Using the Handset with the RadioReceiving a Telephone Call Putting a Telephone Call on HoldManual Phone Patch Procedure 8.18.2 8.4 8.38.5 8.6Remote KEY Negative Acknowledge ErrorSelf Test Automated OperationWaiting For Input Query Disconnecting DisconnectRadio Is Keyed Keyed Radio Is Unkeyed UnkeyedCaller Enters The Password if enabled Caller Dials The RTU-292RTU-292 Adapts To The Phone Line RTU-292 Enters the Command Mode Placing a Call in the Command ModeTerminating a Call Operating the RTU-292 from the Front Panel Keypad Dtmf Control CommandsDtmf Command Function 1Standard Dtmf Operational Commands2Programming Mode Dtmf Commands RTU-292 Password Protection Inactivity Disconnect TimerCalling Timer Using the RTU-292 Speed Dial Feature Using the Speed Dial FeatureProgramming the Speed Dial Directory Factory Reset Speed Dial ResetOptional 4 Wire Operation Front Panel Buttons and Indicators Main BoardAudio BUS Arrangement Telephone Interface Circuits Telephone Send CircuitsTelephone Receive Circuits Radio Interface Circuits Ring Detector and Tone RingerReceiver Input Amplifier Transmitter Audio OutputFSK Modem Dtmf DetectorMicrophone Circuit Speaker and Headphone CircuitsAdaptive Hybrid Audio DelayNoise Generator Peak DetectorAC Power Supply Power SupplyDC Power Supply 8 CPUVoice Prompt Option Option Interface BoardPrompt Tone Generator Speech ProcessorVoice Prompt Software Local Phone OptionInterface Circuitry DIAL/BUSY GeneratorsCommands Sent to the RTU-292 RS-232 Remote Control Overview1Command Summary Null Command Auto Answer CommandAudible Ring Command Dial Command Date CommandDtmf Command Disconnect CommandHandset Radio Command Handset Phone CommandSpeaker Radio Command Speaker Phone CommandSD nnALL num.? CR Speed Dial CommandTel-Line Radio Command Tel-Line Phone CommandSoftware Version Command Time CommandResponse Summary Status Returned from the RTU-292Null Response Auto Answer ResponseCall Starting Response Dial Response Disconnect ResponseDtmf Response Elapsed Time Response Handset Phone ResponseHandset Radio Response Speaker Radio Response Speaker Phone ResponseSpeed Dial Response Tel-Line Phone ResponseTel-Line Radio Response Version Response Time/Date ResponseResponse Error Codes Response Error CodesCall Progress Responses from the RTU-292 Call Progress ResponsesRepair or Replacement Preventive MaintenancePerformance Testing AlignmentHybrid Balance Measurement Hybrid Balance Test Set-Up Main Hybrid Test Procedure Alternate Hybrid Test Procedure VOX Sensitivity Measurement VOX Sensitivity Test Set-Up VOX Test ProcedureFault Analysis Description Replaceable Parts ListDescription Reference Designator RTU-292 Operations Manual Reference Designator RTU-292 Options Special Software VersionsVoice Prompts Enable Installation and ConfigurationSW1-6 Voice Prompts Off Disabled Enabled OperationVoice Prompt Option Installation Local Phone Enable Local Phone Option Installation and ConfigurationSW1-7 Local Phone Off Disabled Enabled SW1-8 Ringthrough Off Disabled EnabledLocal Phone Option Operation 5Local Phone Dtmf CommandsVMM-100 Hardware VMM-100 DSP SectionVMM-100 Analog Interface VMM-100 Software VMM-100 Installation and ConfigurationVMR Algorithm Noise Reduction AlgorithmVMM-100 Option Installation Environmental VMM-100 SpecificationsVMM-100 Switch Functions VMM-100 I/O Connector Information P9Dtmf Access Option After the Call Begins RTU-292 Prompts for Confirmation Squelch Break Access OptionSetting The Date Setting The TimeCall Logging Option Checking The Time And DateControlling the Radio VIA the RTU-292 Front Panel Keypad Radio Control OptionCommand Followed By Command Description 9DTMF Radio Control CommandsSchematic Diagrams Blank Index Environmental Self Test Speech Processor
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