Matrix
140
Vision System Manual
Privacy from Interrupt/Barge-In/Raid
Start
Station A and Station 
B are in speech
Station C calls station 
A. He gets busy tone
Station C dials Interrupt 
Request, Barge-In or Raid 
Is station C 
allowed the dialed 
feature?
Is Station A
 programmed with privacy 
against Interrupt Request / 
Barge-In or Raid ?
Call blocked. Station 
C gets error tone
End
Yes
No
Call blocked. Station 
C gets error tone
End
No
Yes
Station A gets beeps 
in his speech
Logic of Interrupt Request, 
Barge-In and Raid follows here
End