Matrix VISIONPRO System Manual 174
Interrupt Request (IR)
Interrupt Request allows you to break into an on-going conversation after intimating the station user about the
interruption.
In case of an urgent call, the operator can put the call on hold, interrupt the busy station user to inform about the
urgent call and then transfer that call.
How it works
• A, B and C are users of the system.
• A and B are talking to each other.
• C calls A.
• C gets Busy Tone.
• C dials Interrupt Request command.
• C gets Ring Back tone (RBT) and A gets beeps indicating about a new call. If A dials Flash to answer C’s
call before the expiry of the Interrupt Request Timer, A will be in speech with C. B is put on hold and will get
music on hold.
• If A does not dial Flash before expiry of the timer, C’s call will be disconnected.
• After the conversation between C and A is over and C goes ON-Hook, speech between B and A will be re-
established.
Interrupt Request works even when the destination is talking on a trunk line.
Feature Interactions
• Call States:
• Interrupt Request works only if the dialed station is busy. The dialed station may be busy with another
station or trunk (external number).
• Interrupt Request works only if the user about to be interrupted in is in a two-way normal speech with
another user or external party.
• It will not work if the busy signal is due to the user being OFF-Hook, or in the middle of dialing, or
accessing a feature of the PBX.
• Call Toggle: Once A and C are connected to each other, A can toggle between B and C using Call Toggle
feature. Refer “Call Toggle” for details.
• Privacy from Interrupt Request: If the feature Privacy from Interrupt Request is enabled for a station, it
cannot be interrupted.
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