
4000 Digital Series II Issue 1.4 Panel User Guide
STA0380 Page 195
Deactivating, with the Make before break field cleared,
ii) All Extension Panel or Shift Page DAKs are set to Non-Latch.
6.6.2 IFB Destinations
The control panel provides 31 IFB destination DAKs. These DAKs can be locally, centrally or remotely
programmed.
CMAPSi can configure the default sources, destinations, returns, priority and interrupt levels for each
IFB in the system. Any program source that CMAPSi assigns to an IFB is not visible to a Router Control
Panel, and cannot be deleted by a panel. A Router Control Panel can add an additional program source
assignment to the list of CMAPSi default program sources.
ADM monitors and can change the program sources, destinations, returns and interrupt levels of IFBs.
ADM monitors assignments made by Router Control Panels in the system.
IFB destination DAKs are recommended to be interlocked as default. When a new IFB destination DAK
is selected the previous IFB destination DAK is deselected. Therefore, one IFB destination DAK can be
selected at a time. The red LED on an IFB destination DAK is lit while that IFB is selected. The green
LED is lit on any IFB destination DAK that has a program source assigned by the panel.
When an IFB destination DAK is selected, the green LED on any program source DAKs assigned to it
on the Extension Panel or Shift Page is lit. The green LED on any program source DAK not assigned to
this IFB destination is cleared. The panel monitors the IFB by destination or return listen (configured in
CMAPSi panel attributes), if the IFB DAK entry has its listen attribute set. The panel removes any
monitoring that may have been in place for the previous IFB selection.
The Router Control Panel can talk to the selected IFB destination, if the IFB pushbutton has its talk
attribute set. To prevent program sources from being cut or dimmed when the panel is talking to an IFB,
the panel should be configured in the CMAPSi IFB programming section to have a 'Priority Level' of 1.
To prevent the Router Control Panel from talking to any selected IFBs, set the CMAPSi IFB programming
to have a 'Priority Level' of 0.
IFB destination DAKs can be configured as non-interlocking, allowing more than one IFB to be monitored
at a time. The green LED indication on program source DAKs corresponds to the program source
assignments for the last selected IFB destination.
6.6.3 Program Sources
A Router Control Panel can support up to 80 program sources on 4 x 4206 Extension Panels (access to
31 program sources is possible using the SHIFT Page when the corresponding Extension Panels are
not connected).
CMAPSi is used to configure the program source DAKs on the Extension Panels. Only ports used as
program sources are recommended to be used as other assignment types will not be recognised.
A single program source can only be assigned to an IFB at a time. A program source can be assigned
to more than one IFB. The red LED on a program source DAK is lit while the pushbutton is pressed.
The green LED on a program source DAK indicates that the program source is assigned to an IFB
destination. When an IFB destination DAK is selected the green LEDs are lit only on the program source
DAKs assigned to the selected IFB destination.
There is no LED indication showing the current route status. For example, an IFB caller may be
interrupting the program source to IFB destination route.
When there is no IFB destination DAK selected, program source inputs can be monitored. The green
LED is lit on all program source DAKs that have been assigned to an IFB destination. The green LED is
also lit on all IFB destination DAKs that have a program source assignment. Selecting an assigned
program source DAK will extinguish the green LED indication on all IFB destinations that do not have
that program source assigned.
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