Dallas Delta Corporation Pty.Ltd.
Page 4
The DDC_VoIP telephone operates like a standard hands free telephone with many added features.
When the call button is pressed, the unit will establish a call to a preset number.
Repressing the call button during a conversation period will terminate the call.
A call duration period may be set, if a limit is required.
The unit can be configured to auto-answer call or redirect then to a forwarding number if not
answered within the preset period.
During ring, the unit can be answered by pressing any for the buttons.
Handset models can be supplied with or without a keypad, and they can be setup to hotline (call a
number) when the handset is pickup.
Calls made to a busy number or if the number if not answered can be re-direct to 2 other alternative
numbers.
Relay Control
Two on board relays may be fitted to the door station, each may be switched on during conversation
by the remote operator or either one can be configured to be activated when the call is initiated.
(refer to
Relay Inuse
on page 11 for more on this function).
Remote relay control:
The DDC_VoIP phone is currently ship fitted with one relay as standard (the second relay on
request).
The remote operator may activate the on board relay/s by entering the code set for that relay.
For example, if relay 1 code is set to 95, then remotely typing 95 will activate it, (refer to page 11).
A response beep will indicate that the code was correct and the relay has activated. No response
tone indicates an error in the code and the process should be repeated after a minium 3 second
delay.
(NB, as relay 2 is optionally fitted, the response will be the same whether the relay is installed or
not.) This remote control requires RFC2833 dtmf protocol set throughout the system.
Call initiated relay control:
Either one of the relays may be configured to switch on after the call button is pressed. This function
may be used to control an external camera, light or to initiate an alarm, etc.
The relay will stay on for the duration of the call, unless the remote operator re-activates it by
entering the code, then the relay will switch off after the
Relay On timer
period.
(again, see page 11 for more details).
OPERATION
WARNING
This telephone can not be used for emergency
during power failure unless fitted with a backup 12 volt
battery!
and only if network connection is guaranteed.
purposes
