Aastra IntelliGate A150, System Manual

Page: 394 / 524

System Functions and Features as of I7.9
394 Features
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8. 6. 6 Silent intrusion
Silent intrusion is a variant of the Intrusion feature and is used primarily in call cen-
tres.
If the called internal user B is busy, the calling internal user C has the possibility of
intruding into the current call without call parties A and B being aware of it. Unlike
with the
Intrusion feature, user B is signaled neither visually nor acoustically and
thus cannot reject Silent intrusion . User C listens to the ongoing call. His micro-
phone remains switched off.
User C can now enable his microphone or press the Intrusion Foxkey at any time to
intrude into the call. Normal Intrusion with signaling is then carried out as de-
scribed in "Intrusion", page 392 .
Fig. 191 Silent intrusion
Detailed Description
Tab. 219 Silent intrusion
Interface
Operating sequence / signalling on the termi-
nal
Scope
A In principle no signaling. Depending on the con-
nection type, user A can hear a crackling when C
intrudes (see
Tab. 220 ).
B In principle no signaling. Depending on the con-
nection type, user B can hear a crackling sound
when C intrudes (see
Tab. 220 ).
Requirement:
• B has allowed intrusion on his set.
• B is not in the process of setting up a
call, in an enquiry call or in a confer-
ence.
C C hears a busy tone if intrusion is not allowed or is
not available Possible interfaces:
• Internal
Requirements:
• C has the authorization for silent intru-
sion.
• A Silent intrusion license is present.
C B
A