AT&T MERLIN LEGEND Release 4.0 Feature Reference page 570

Feature Reference
make a transfer without consultation, the single-line telephone user presses and
releases the Recall or Flash button or switchhook, dials the extension or
outside number, and hangs up. The call is transferred.
If a single-line telephone with positive or timed disconnect is used, for example,
AT&T models 2500YMGL and 2500MMGK, pressing the switchhook
disconnects the call. With this type of telephone, the Recall button must be
used instead of the switchhook to transfer a call.
Feature Interactions
Authorization Code
Auto Dial
Automatic Line
Selection
Basic Rate Interface
Callback
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Transfer
The Authorization Code feature does not affect the ability to make a
trunk-to-trunk transfer. If the telephone is restricted from making a trunk-
to-trunk transfer, entering an Authorization Code does not remove this
restriction.
Users can press inside Auto Dial buttons instead of dialing extension
numbers to transfer calls. To use One-Touch Transfer, users must
program an Auto Dial button for every extension to which they transfer
calls. When a system operator transfers a call and it returns
unanswered, the green LED next to the Auto Dial button flashes to
indicate the extension from which the call is returning. Only system
operators receive this indication.
The ALS sequence does not apply when the Transfer button is
pressed.
Calls on BRI lines are available for the MERLIN LEGEND
Communications System Transfer feature. The central office based
Transfer feature is not supported by the MERLIN LEGEND
Communications System.
A queued callback call cannot be transferred, but calls transferred to
busy extensions are eligible for Callback. When a user reaches a busy
extension while transferring a call, Automatic Callback or Selective
Callback can be used to queue the call before completing the transfer.
The caller hears ringback or Music On Hold.
When the extension is available, the call is transferred to the extension
automatically. If the extension is not available before the transfer return
time expires, the call is removed from the callback queue and returned
to the originator.