AT&T MERLIN LEGEND Release 2.0 Analog Direct-Line Console Operator's Manual page 106

Features
have DSS or Auto Dial buttons or your system is not set
up for One-Touch Transfer, see "To Transfer to an
Inside Extension without Using One-Touch Transfer" in
this section.
Whether the number accepting the transfer is an
extension or an outside number. See "To Transfer to
an Inside Extension Using One-Touch Transfer" and
"To Transfer to an Inside Extension without Using
One-Touch Transfer" for inside transfers, and "To
Transfer to an Outside Number" for outside transfers.
Features chosen to handle unsuccessful transfers. If
the person receiving the transferred call is on another
call or not in, you can use Camp-On, Barge-In, or Park
and Paging. See "Handling an Unsuccessful
Transfer" in this section.
NOTE:
You must have an available SA or ICOM button to
transfer a call using a DSS or Auto Dial button.
When you press a DSS or Auto Dial button to
transfer a call, the system automatically selects an
SA or ICOM button for the transfer.
If an SA Voice or ICOM Voice button is selected
for a transfer with consultation, the transfer is
called a voice-announced transfer. The person to
whom you are transferring will hear your voice on
his or her speakerphone after a beep.
Transfer 4-57