Is the correct
PIN entered?
Does the caller press
while hearing the reorder
tone (Call Retry)?
Is the Walking COS/Verification
Code Entry feature number dialled
for Security Mode Override?
Yes
No
No
NoneNoneNoneNone All SecurityTrunk Security
Yes
Is the dialled number
an extension number or
floating extension number?
Yes
No
Extension No./
Floating
Extension No.
What is the dialled number?
Feature No.*
(Absent Message,
FWD, etc.)
The feature is set.
Trunk Access No.
+ Telephone No.
Other
The dialled number is sent to the trunk.
Reorder tone
Yes
No
A
B
B
C
C
D
D
No Security
The call is disconnected.
Continued from previous page
(DISA Reorder
Tone time
expires)
Yes
Is the extension
in DND mode?
Yes
No
A
No
Yes
The call is established.
The call is routed to the
intercept destination.
(DISA Intercept Routing
No Answer)
Does the destination
answer the call?
Does the
destination
answer
the call?
No
Yes
The call is established.
The call is disconnected.
E
E
Does the caller press
while hearing a ringback
tone (Call Retry)?
The call is directed to the extension.
The caller hears a ringback tone.
(DISA Disconnect
Time after
Intercept expires)
(DISA Intercept
time expires)
G
* Feature numbers are available only when the Walking COS feature is used.
No
No
No
Is the extension
busy?
Is Call Waiting
mode on?
Yes
Yes
Continued on next pageContinued on next page
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