AT&T MERLIN LEGEND Calling Group Supervizor's Manual page 24

Calling Group Supervisor Telephones
Phones with SA Buttons
SA Ring. Use
and outside calls, including calls to the calling group.
only the extension to make an inside ringing call; dial a
dial-out code (usually a 9) before the phone number to make
an outside call.
SA Voice. Use this button to make voice-announced inside
calls; your co-worker hears your voice over his or her
speakerphone instead of the phone ringing. You can also use
this button to receive inside calls and make or receive
outside calls, including calls to the calling group. To make
an outside call, dial a dial-out code (usually a 9) before the
phone number.
2-10 Buttons on Your
make and receive both inside
this button to
Phone
Dial