The PBX answers the call.
A DISA call is received.
A number is dialed. Nothing is dialed.
No Dial Destination?
Cyclic tone,
CPC signal
Fax (CNG) tone
FAX Extension is set
to the incoming call
destination.
The call is
disconnected.
No Dial Destination is
set to the incoming call
destination.
The condition of
incoming call destination:
• Extension or Extension Group
• Busy
(DISA Delayed Answer Time expires)
(DISA OGM Mute Time expires)
(DISA Wait Time after OGM expires)
DISA OGM
No
No
DISA Busy Mode?
Busy
DisconnectedReceived
OGM
Goes to
Yes
Yes
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