AT&T MERLIN LEGEND Release 4.0 Feature Reference page 481

Feature Reference
If use of the communications system's Conference, Drop, and Transfer features
is also desired, they must be programmed on available line buttons on each
multiline telephone through extension programming or centralized telephone
programming.
In Release 1.0 or 1.1, Recall cannot be used on any outside call made or
received on an ICOM button. In Release 2.0 and later, this restriction is
removed.
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 has been changed to
select an ICOM button and the user has used the Idle Line Access code to
initiate a call, the Recall signal accesses the communications system's Hold,
Conference, and Transfer features, not those of the host switch.
Telephone Differences
Queued Call Consoles
A Queued Call Console (QCC) cannot use Recall. A Recall button cannot be
programmed on the QCC, nor can the QCC use the Recall feature code.
Other Multiline Telephones
Analog multiline BIS telephones have a fixed Recall button that can be pressed
to access the Recall feature.
MLX telephone users and cordless/wireless telephone users can use Recall by
pressing the Feature button and dialing
Recall button be programmed instead.
To activate host system features, in Behind Switch mode, the fixed Conf, Drop,
and Transfer buttons on an MLX or analog multiline telephone must be
programmed through system programming to send a timed flash plus the code
expected by the host. Once this programming is done, these fixed buttons have
no effect when pressed during an inside call.
If use of the communications system's Conference, Drop, and Transfer features
is also desired in Behind Switch mode, they must be programmed on available
line buttons on each multiline telephone, using extension programming or
centralized telephone programming.
, but it is recommended that a
775
Recall/Timed Flash
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