Natcomm
Page 5
OPERATION
When a visitor at your door or gate presses the call button on the SUPPLIED DOOR
PHONE, DS5 will produce an OFF HOOK condition to the PBX.
The PBX system should be programmed to ‘HOT DIAL’ this connection to one or
more internal extensions or out to an external telephone number (which can include
a mobile cell phone).
Upon detection of the DS5 ‘Off Hook’, your PBX will AUTOMATICALLY connect the
visitor at the DOOR PHONE direct to one or more pre-programmed PBX
extension(s).
Alternatively, the PBX may initiate an OUTGOING CALL so that the visitor at the
DOOR PHONE may be connected to an EXTERNAL SITE, or even a CELLULAR
PHONE.
Once the INTERNAL or EXTERNAL party answers their telephone, they will be
connected direct to the DOOR PHONE so that they may communicate with the
visitor.
If you are using the LOCK CONTROL OPTION, you can also open a gate or door
lock during this call (by pressing **) to allow your visitor to enter.
Press ** to unlock your gate or door during a Door Phone call
Once the CALLED PARTY has hung up, DS5 will detect the ‘hang up tones’ and
then terminate connection to the Door Phone.
Note - Due to the possibility that your PBX system may not output hang up tones, or
“AUSTRALIAN Cadence” hang up tones, a MAXIMUM CALL TIME has been set at
99 seconds. This time can be changed to any value between 15 to 990 seconds. For
further detail, refer to the section - Programming Options on page 14.
Note : You can also terminate a Door Phone call immediately by pressing any DTMF
digit from 0-9 just before you are ready to hang up.