Guardian Technologies DVST manual Connecting a terminal adapter in direct mode, Making a Call

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Terminal Adapters

DVST Installation Guide

X21

Uses X21 dialling for numbers in the DVST menu

Connection can be made in the direct mode, where the number to be called is stored in the terminal adapter, or in the X21 dialling mode where the DVST passes the number to be dialled to the Terminal Adapter, or ATMODE.

V35

V35=ON/OFF

Applicable in all modes (ATMODE, DIRECT and X21)

8.2Connecting a terminal adapter in direct mode

This uses the signalling lines; C (control) and I (indicate), to respond to and initiate calls.

Making a Call

The DVST initiates a call by raising C

The TA then dials its stored number

When the call is connected the TA raises I

Call continues

Answering a Call

The TA indicates an incoming call by raising I

The DVST responds by raising C

Call continues

Call disconnection

The DVST ends a call by dropping C

The TA confirms disconnection by dropping I

Configuring a Terminal Adapter for direct mode operation

As the control lines I & C are used to control calls, the following is required of the system: Answer : C

Originate : C

Disconnect : C

Alerting : I

DCD/I : Delay

Note: The above settings are the basic requirements. TAs have many other settings which can affect transmission such as speed of call, type of call, circuit switch etc.

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Contents Page Page Installation Guide DFT-0150Page Safety Page Regulatory Notes FCC and DOC InformationA. and Canadian Models Only CE MarkPage Table of Contents Demonstration Mode ModemsTerminal Adapters Leased Line TransmissionCalls Images and TransmissionAlarms & Events Glossary Returns ProcedureAudio Cable AssembliesEvent monitoring Alarms 1IntroductionDFT-0150 Transmitter TelemetryPage Packing the Dvst Unpacking the unitItems in packing Page Callback Alarms Feature3Operation Freeze All Alarms Offline Frozen AlarmTrack Last Alarm No Frozen Images4Installation Rear Panel connectionsPower Inputs 37 Way Alarm ConnectionsWhat you require 5SetupSetup using a PC Remote Setup Dvst CommandsDefine Camera Inputs Auxiliary PortDefault settings AUX1 N 38400 Define Auxiliary Ports 1,2Set Port usage Each field entry is separated by a space. If AUX2 N 38400Demonstration Mode Demonstration modeDemo Cable Tech NoteConnecting the demo cable Single cable operationPage Pstn Connection Modem Modem Commands7Modems MBAUD= Set Modem port Async baud rate. default 9600, 19200 ModemModem configuration strings MODSTR= Set type of modem Fast or Sync default, FastUSER=... Available for user configuration Default, blank Zyxel US Modems OnlyModem dial string Default, AtdtModem Operation Connecting a modem in direct mode Configuration of modem in direct modeCall request Call answer requestUsing a modem in Atmode General settings for modems in AtmodeAction required of Modem Possible AT settings Modem RequirementsAll modems Synchronous ModemsCountry specific settings MINIT=AT&M1 &D2 &C1 *FLO *OC1 *DTO *DE12 *AA1No Dialtone Transmission speedUser=ATX3*BDO&Y1&W1 Where AT*MXnMicrocom Syncronous modeDIP Switch Settings Synchronous Operation Async mode TrailblazerModem RET Octocom OSI 8196ASend RET Modems Dvst Installation Guide This page intentionally blank Default, on Terminal AdaptersIsdn Connection Terminal Adapter Sets dual Isdn support on or OFFConnecting a terminal adapter in direct mode Configuring a Terminal Adapter for direct mode operationMaking a Call Answering a CallGandalf TA1 Direct ConnectionRemarks Ascom 5000 / CitamStep Instruction ISDN=ATMODE RET DUALISDN=ON RET Isdnstr = Citam RET ISDN0 RET Atret AT&WRET, ESC ISDN1RET AtretX21 AT&WRET ESC Quit RETStep Instruction Remarks ‘CONF’‘DIPS’ ‘CHNG’Quit RET Dataflex TAISDN=ATMODE RET Dvst set up for leased line operation LEASED= Leased line operation, options are default, OFFLeased Line Transmission Leased line terminologyLeased line operation Ascom 64000 Baseband Modem SET UP TX or Master ENDSET UP RX or Slave END Page Passwords PASSWORD= Set system password toSet telephone entry n password to 10CallsOn Screen Titling Telephone Number Entries / Connection Commands Default, blankSet telephone entry n to FormatCall connection timeout period Default, 60 secondsDefault, 30 seconds CALLBACK= Set call back on or OFF Default, offCAMLO=Sets low resolution cameo operation Images and TransmissionImage size Target Picture SizesPage Alarms & Events Alarm ConnectionsAlarm Settings Purpose & intended useSet contact nn normally closed Images transmitted on alarmSet contact nn normally open ALMODE= ...Set Alarm operation mode Set alarm outputs Auto / ManualDefault is Auto Alarms & Events Dvst Installation Guide 13Audio Equipment required but not suppliedConnecting the DAL100 Cable Assemblies 14.1 X21 to V35 Cable Assembly 14.2 X21 Cable Assembly 14.3 V24 Sync Modem Cable Assembly 14.4 RS232 Cable Assembly DVST-PC 14.5 RS232 Cable Assembly DVST-DAL 15Glossary IsdnPage Returns Procedure Event of DifficultyPage Dvst Installation Guide Returns Procedure Returns Procedure Dvst Installation Guide

DVST, DFT 150/175 specifications

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In conclusion, Guardian Technologies' DFT 150 and DFT 175 models represent an excellent investment for anyone looking to improve indoor air quality. Their sophisticated filtration technology, additional UV-C features, energy efficiency, and user-friendly design make them a top choice for air purifiers in the market today.
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