Intrusion permits a calling party in the SIP-Q private network with appropriate permissions to intrude upon a busy destination and form a 3-party conference.
Currently only and OScAR-Pro (Lotus Sametime Unified Telephony Alarm and Response server - Professional, formerly known as DAKS) support originating a call and invoking intrusion against a busy Lotus Sametime Unified Telephony subscriber. Lotus Sametime Unified Telephony does not support originating an Intrusion when the destination is located in the SIP-Q network.
Figure 1. Before
Figure 2. After
Executive Intrusion (Terminating Only)
A voice service that permits a subscriber (or OScAR-Pro), with appropriate permissions, to intrude upon a busy destination as long as the destination allows intrusion.
Currently, the subscriber protection parameter for Executive Busy Override is reused by the Executive Intrusion service to allow/block intrusion. So in order to protect a subscriber from Executive Intrusion, he or she has to be provisioned for Executive Busy Override
with either the Block Override
or Override and Block
Emergency Intrusion (Terminating Only)
A variant of Intrusion where an emergency operator or OScAR-Pro with appropriate permissions can intrude upon a busy destination.
OScAR-Pro may provide a high priority audio message to the destination.
Lotus Sametime Unified Telephony flaggs Emergency Intrusion calls as "Emergency Calls" i.e. they are not subject to Call Admission Control.
Depending on which user leaves the conference first, when Users A and B are connected and User C overrides B:
if A disconnects, C and B remain connected
if B disconnects, A and B call is cleared, C recalls B
if C disconnects, A and B remain connected
When 2 users remain, the conference shall be dropped and the call transitions to 2-party talk state and release the conference circuit.
There are several reasons for not accepting an intrusion request, e.g.
no conference circuit available
target user is protected against intrusion
target user is not in a stable 2-party call
In any case, the calling party may still attempt to invoke another service (e.g., CCBS).
Parent topic: Calling Services
Executive Busy Override
Direct Return Call from Emergency Center
Forced Release Intrusion