AT&T MERLIN LEGEND Release 4.0 Feature Reference page 482

Feature Reference
Single-Line Telephones
A single-line telephone user without a Recall or Flash button must use the
switchhook to send a timed flash. The communications system intercepts the
signal; if it is to be sent on to a host switch, the system sends a signal of the
duration programmed for the Recall timer.
In Hybrid/PBX or Key mode, a Recall signal from a single-line telephone
accesses the communications system's Hold, Conference, and Transfer
features.
In Behind Switch mode, a Recall signal from a single-line telephone is ordinarily
sent to the host switch, since the factory setting for the Automatic Line Selection
(ALS) sequence selects the prime line. However, if the ALS sequence is
changed to select an ICOM button and an Idle Line Access code initiates a call,
the Recall signal accesses the communications system's Hold, Conference, and
Transfer features, not those of the host switch.
NOTES:
1. If a single-line telephone with a timed or positive disconnect is used,
pressing the switchhook disconnects the call. With this type of telephone,
the Recall or Flash button must be used instead of the switchhook for
features that require a switchhook flash.
2. A single-line telephone user without a Recall or Flash button, or with
buttons that activate telephone-only features, must press and release the
switchhook to send a timed flash.
3. A single-line telephone user who has a 2500 YMGL or 8110M telephone
with positive disconnect on cannot press the switchhook to activate
features. The user must press the Hold button or the Flash button to
activate a feature. (The 8100M telephone must have positive disconnect
programmed on the telephone as described in its manual.)
Feature Interactions
Allowed Lists,
Disallowed Lists,
and Calling
Restrictions
Auto Dial
482
Recall/Timed Flash
If Recall is used on a personal line or Pool button, (or, in Release 2.0
and later, on an SA or ICOM button used to access an outside
loop-start trunk) the accessed trunk is kept, the user hears outside dial
tone, and calling restrictions are reapplied.
The Conf button is used to enter the Flash special character, which
simulates pressing the Recall button, in a telephone number
programmed on an Auto Dial button.
If Recall is used during an inside call made on an Auto Dial button, the
call is disconnected and the user hears inside dial tone.