DRAKE 4000 series II Guía de usuario descargar pdf (Pagina 192)

Panel User Guide Issue 1.4 4000 Digital Series II

Page 162 STA0380

6 Intelligent Control Panel Features

6.1 DIAL Mode

6.1.1 Intelligent Control Panel

The Intelligent Control Panel can be used dial to external telephone lines. Calls are originated by

pressing the panel DAK with the 'DIAL' mnemonic and then selecting a DAK programmed to support a

connection to a Telephone Balance Unit, TBU. A DAK's route and control configuration in CMAPSi sets

up the control that causes a telephone line connected to the TBU to go 'off-hook' and to create talk/listen

routes to the port number corresponding to the TBU unit.

Pressing a DIAL DAK automatically enters DIAL mode, from where the mnemonics of all DAKs assigned

as being of type DIAL flash. All other DAK mnemonics remain, but do not flash. The 'REPLY' Key

mnemonic is replaced by the word 'EXIT'. Pressing 'EXIT' at this stage causes the panel to return to

normal operation.

Pressing a DAK with a flashing mnemonic causes the panel to display the digits 0..9 , * and #, to allow

DTMF telephone number dialling. The telephone line is taken 'off-hook' when the DAK is pressed. The

display shows the digits that have been pressed. While a digit pushbutton is pressed the panel

establishes an isolate route to the TBU. The isolate route prevents any listeners to the panel from

hearing the DTMF tones generated during dialling. The panel microphone is also muted during dialling

to prevent external noise from interfering with the DTMF tones.

Pressing the 'RLSE' DAK causes the telephone line to be placed back 'on-hook' and the 'RLSE' text to

be replaced by 'CNCT'. Selecting 'CNCT' causes the telephone line to be taken 'off-hook' again and the

'CNCT' text to be replaced by 'RLSE' once again.

Pressing the 'EXIT' DAK causes the panel to return to normal operation. If the line was 'off-hook' when

'EXIT' was pressed, the selected DIAL type DAK is latched.

A port number corresponding to the TBU line can be accessed by pressing the DIAL type DAK without

having to enter DIAL mode. In this case the line will be held 'off-hook' until no DAKs accessing the same

TBU port are active. Once a telephone call has been established it is possible for another panel to take

over the call, provided that the panel has a DAK with the same TBU port and GPSF programming.

On entering DIAL mode all LED signalisation is cleared. Pressing a digit pushbutton cause the relevant

digit's DTMF tone to be generated while the pushbutton is pressed. The red LED is lit while the

pushbutton is pressed.

The following sequence of diagrams illustrates how to make and release a call to a telephone line.

CMAPSi has configured DAKs with the mnemonics TEL1 and TEL2 as DIAL DAKs.

If enabled, busy signalisation indicates that DIAL DAKs are active.

Press DIAL DAK

TEL1 and TEL2 flash.

- - - - - - - - - - - - - - DIAL

o o o o o oo oo o o o o o

o o o o o o oo oo o o o o oo o

o o o o o oo oo o o o o o o o o o o o o oo oo o o o o oo o

- - - - TEL1 TEL2 - - - - - - RPLY- - - - - - - - - - - - - - - -

- - - - - - - - CAM1 - - - -- -

1 2 ... 187 188 189 190 191 192 193 194 195 196 197 ... 235 236

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DRAKE 4000 series II Guía de usuario Pagina 192