AT&T MERLIN LEGEND Release 4.0 Feature Reference page 365

Feature Reference
Considerations and Constraints
Music On Hold is not provided to inside callers.
Music On Hold is never heard by callers in the Queued Call Console queue.
Direct Inward Dialing (DID) and tie trunk jacks cannot be used for Music On
Hold. A line/trunk jack designated for Music On Hold cannot be grouped in a
pool.
When programming a line/trunk jack for Music On Hold, the entire system is
forced idle.
If you use equipment that rebroadcasts music or other copyrighted materials,
you may be required to obtain a copyright license from or pay fees to a third
party such as the American Society of Composers, Artists, and Producers
(ASCAP) or Broadcast Music Incorporated (BMI). You can purchase a Magic on
Hold system, which does not require such a license, from AT&T.
Mode Differences
Hybrid/PBX Mode
In Hybrid/PBX mode, trunk jacks used for Music On Hold cannot be assigned to
trunk pools.
Feature Interactions
Callback
Camp-On
Conference
Group Calling
Park
Personal Lines
Remote Access
Transfer
An outside caller waiting in the callback queue hears Music On Hold.
When Camp-On is used to complete the transfer of an outside call, the
caller hears Music On Hold until the call is answered if the transfer
audible is set to Music On Hold. See Table 27 for more information.
If the first participant put on hold for a conference call is an outside
caller, the caller hears Music On Hold until the second participant is
added.
Outside callers waiting in calling group queues hear Music On Hold.
A parked caller hears Music On Hold.
A trunk used for Music On Hold cannot be assigned as a personal line.
A remote access user who is waiting for a busy trunk pool or extension
hears Music On Hold.
If the system is programmed for Music On Hold, music is played only
during the period before the transfer is completed by the extension
originating the transfer. The caller hears music when the Transfer
button is pressed and when the extension number is dialed. When the
transfer originator presses the Transfer button a second time or hangs
up, the caller hears ringing. If the transfer uses Automatic Completion to
a non-calling group extension, the outside caller hears ringing.
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Music On Hold