AT&T MERLIN LEGEND Release 3.0 System Programming Manual page 517

Telephones
NOTE:
If you use equipment that rebroadcasts music or other copyrighted materials,
you may be required to obtain a copyright license from and pay license fees to
a third party (such as the American Society of Composers, Artists, and
Producers or Broadcast Music Incorporated). Magic on Hold
license and can be purchased from AT&T.
Pool buttons cannot be assigned or removed from extensions unless the pool
has trunks assigned. If all trunks are to be removed from a pool, all Pool button
assignments must first be removed from telephones. Another way of handling
this situation is to program another trunk into the pool and then remove the Pool
button assignments from the extensions.
Hybrid/PBX only. Individual lines/trunks assigned to a pool can be
assigned to a button only on a DLC operator position. If one of the
lines/trunks in a pool is assigned to a button on a non-DLC telephone, the
result is a Pool button assignment.
Key only. The system assigns the first eight line numbers to buttons on
multiline telephones whether or not an outside line is physically
connected. If a line is not connected, the button assignment must be
removed so the user can assign a feature to the button.
For the MDC 9000 and MLC-5 cordless multiline telephones and the
MDW 9000 wireless multiline telephone, the system assigns the first eight
lines connected to the control unit even though the telephone has fewer
than eight buttons available. Remove the extra lines in system
programming so that the appropriate number of lines are assigned to
buttons on these telephones.
Lines and trunks are assigned to buttons in the order in which you press each
line button on the system programming console or keyboard. Existing line
assignments can be rearranged by removing all current assignments and then
pressing the line buttons on the console or keyboard in the order that they
should appear on the buttons. For information on the order of the programmed
buttons, refer to the button numbers on the applicable planning form for each
telephone.
If you want to reserve some blank buttons for features between line buttons, a
line must be assigned as a placeholder for each blank button. After all lines are
assigned, remove the lines used as placeholders on the buttons reserved for
features.
®
requires no such
Programming Procedures
4–167