Callback - AT&T MERLIN LEGEND System Reference Manual

Features
All Other Multiline
Telephones
Single-Line Telephones
Feature Interactions

Callback

Conference
Coverage
Direct-Line Console
Direct Station Selector
Display
Do Not Disturb
To use Barge-In on all other multiline telephones, the user dials the extension
number then presses a programmed Barge-In button or presses the Feature
button and dials 58. On an MLX display telephone, the user can also press the
Feature button and select Barge-In from the display.
Single-line telephones cannot use Barge-In.
If Callback is used to request a busy extension or pool and the user is waiting
on the line for the queued call, Barge-in cannot be used to interrupt.
Barge-In can be used to interrupt conference calls; all participants hear the
Barge-In tone. Barge-in does not connect the user to a conference call if the
conference already has the maximum number of participants. If Barge-in is
used to connect to a conference call that involves an outside line/trunk and the
person on the outside line/trunk hangs up, the person using Barge-in is also
dropped.
Barge-In can be used for Individual or Group Coverage calls answered at any
receiver's telephone.
Barge-In enhances call handling by allowing the DLC system operator to
contact a person who is on a call or is using Do Not Disturb (Barge-in does not
override Privacy). If the system operator uses Barge-in for a user who is using
Coverage or Forward (including Remote Call Forward), the call from the system
operator is not directed to the destination telephone.
Barge-in can be activated by pressing a DSS button corresponding to a user's
extension number followed by programmed Barge-In button.
Barge-In appears on the display as a feature choice only on system operator
consoles. On an MLX display telephone receiving a Barge-in call, the message
"Barge-In" and either the name or extension number of the person joining the call
remains on the display until the receiving telephone user hangs up.
If Barge-in is denied, an error message is not displayed on the calling telephone
to indicate that the attempt was not successful.
If Do Not Disturb is activated Barge-In overrides the feature and makes the
telephone ring.
Barge-In 2-51