AT&T MERLIN LEGEND System Reference Manual page 344

Features
Trunks assigned to ring into the QCC queue can also be assigned as
personal lines on one or more telephones.
Only one split condition can be active at any given time on a QCC console.
When a system operator on a call wants to make an outgoing call, he or she
should press the Position Busy button before pressing the Hold button to
temporarily make the console unavailable for calls from the queue. (The
system operator can receive calls forwarded or made to the system
operator's individual extension number.) If the system operator presses only
the Hold button, the position is considered available for calls and a call can
be delivered from the queue. This can prevent the system operator from
making the outgoing call or cause the call ringing on the console to remain
unanswered until the system operator finishes the outgoing call.
Only a calling group can be programmed to provide Position Busy backup
when all QCC system operators activate position busy state.
If no backup position is programmed and only one QCC is assigned, or all
other QCC positions are in a position busy state, the Position Busy button is
not operable.
If two QCC system operators are on the same call, only one system operator
hears the Calls-In-Queue Alert when the number of calls in the QCC queue is
equal to or greater than the programmed threshold.
Voice announcements do not come in over QCC speakerphones.
QCCs cannot make voice-announced calls.
QCCs have no programmable buttons (all features are factory set) and
cannot use feature codes.
If a QCC system operator receives a call and another user joins the call by
using a shared Personal Line or Shared System Access button, the system
operator can press the Start button to begin the transfer process and press
the Join button to connect all three parties in a conference call. However, the
system operator cannot release the call; the system operator sees the
"Denied: Cannot Release" message on the screen.
This "Denied: Cannot Release" message appears immediately (and does not
time out) if the system operator presses the DSS button for the ARS or a pool
dial-out code. The system operator can, however, dial the outside telephone
number and release the call manually even though the "Denied: Cannot
Release" message is shown on the display.
When a QCC system operator is assigned to receive calls on a tie trunk
(excluding dial-in tie trunks), and the caller at the other system uses the trunk
and dials 0, the call is treated as an unassigned DID call type. The QCC
system operator who receives the call sees "DID#" as the call type (along
with the trunk label and trunk number) on the display, instead of seeing "Dial
0" as the call type.
Camp-On cannot be used when Automatic Release is programmed and the
QCC system operator presses a DSS button for a call transfer.
The HFAl (Hands Free Answer on Intercom) button is not operable on a
QCC.
Queued Call Console 2-295