AT&T MERLIN LEGEND System Reference Manual page 254

Features
Park
Personal Lines,
Pickup, and
Transfer
Queued Call Console
Recall
Speed Dial
System Access
If a single-line telephone user with a call on hold hangs up, the call is
disconnected; therefore Park should be used instead of Hold. When a user or
system operator parks a call received on a Personal Line button and it is picked
up at another telephone and put on hold via the Hold button, other users who
share the personal line cannot press the line button and pick up the call.
Calls on hold for transfer are timed so that the user or system operator hears a
reminder tone after the timer expires.
If a call is received on a personal line and is transferred to another user who
receives the call on a System Access or intercom button and puts the call on
hold, another user who shares the line cannot select the shared Personal Line
button and pick up the call. If for some reason the person who received the
transfer and put the call on hold cannot return to the call, another user must use
the line Pickup feature to pick up the call (for example, a system operator can
take a message and disconnect the caller).
Pressing the Hold button to put a caller on hold makes the system operator
available for incoming calls from the QCC queue. The Operator Hold Timer
reminds the QCC system operator that a call is on hold. After a programmed
interval (10-255 seconds) the system operator hears an abbreviated ring as a
reminder when the interval expires the first time. If another call is received at the
same time the hold timer expires, 10 seconds are added to the programmed
Operator Hold Timer interval.
If the QCC system operator does not pickup a call by the time the hold timer
expires twice, the call can be programmed to either remain on hold or return to
the QCC queue. When the QCC Hold Return Option is set for calls to remain on
hold indefinitely, every time the interval expires and no call is ringing on the
console, the system operator hears the ring. If the QCC Hold Return Option is
set for calls to return to the queue, each call on hold at the QCC is timed
individually (a queue return timer is used for each Call button).
The DLC Operator Automatic Hold feature is not used for QCCs.
The single-line telephone user with a Recall button presses the Recall button to
put a call on hold.
The Hold button is pressed to enter the Pause special character in Personal
Speed Dial or System Speed Dial telephone number.
In the Hybrid/PBX mode, if a call is put on hold on a System Access or Shared
System Access button, it can be picked up at the principal's System Access
button or at any other Shared System Access button programmed for the
specific button with the held call unless the Privacy feature is used. Hold
Reminder is heard only by the station that put the call on hold.
Hold 2-205