Ericsson Dialog 4187 Plus User Manual page 26

Outgoing Calls
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Intrusion on a busy extension
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You can intrude on an ongoing call on a busy extension.
Press.
Note: France and Sweden, press
Before the Intrusion is executed, a warning tone is sent to the
parties in the ongoing call. A three party call is established and a
warning tone is heard.
Notes:
The warning tone might be disabled for your system.
The Intrusion feature might be blocked for use on your
extension (preprogrammed by your system administrator).
If Intrusion is not allowed, you will continue to receive a busy
tone.
Intrusion on a busy external line
You can intrude on an ongoing call on a busy external line.
Dial and enter the individual external line number.
Press and dial the digit or digits to get an external line.
4
Busy tone.
Press.
Note: France and Sweden, press
Before the Intrusion is executed, a warning tone is sent to the
parties in the ongoing call. A three party call is established and a
warning tone is heard.
Notes:
The warning tone might be disabled for your system.
The Intrusion feature might be blocked for use on your
extension (preprogrammed by your system administrator).
If Intrusion is not allowed you will continue to receive a busy
tone.
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Dialog 4187 Plus