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ADMINISTRATION
To properly administer a MERLIN LEGEND system at the time of initialization requires that care be taken
during the planning phase of the sales activity. This is especially true if the system is to connect to a
number of different trunks and lines, such as DID, Tie, or ISDN. in addition to using local CO Loop-start
and Ground-start lines. To assist in the planning of the system, sample, filled-in copies of the
planning/administration forms are available. They can be found in the LEGEND PBX System Planning
Manual (555-610-113), and the Key System Planning Manual (555-610- 112). These forms should be
reviewed before starting to complete an actual set of forms for customers’ systems.
Also, keep in mind, that any MERLIN LEGEND CS configuration that requires the use of T-1 and/or PRI
trunks, must be reviewed by the NSAC. The Planning Manuals contain directions for sending the
appropriate forms to the NSAC.
CONSIDERATIONS
Special care must be taken when planning and ordering trunks and lines for the MERLIN LEGEND CS.
The most important aspect which the planner must keep in mind is that it is critical to investigate what
services the local interconnect company can provide. For example, if a Behind Switch system is to be
connected to a telephone company Centrex switch, the Central Office must be able to provide Loop Start
lines capable of sending a disconnect signal. Otherwise the Legend system will ultimately hangup as more
and more trunks are considered in use because no disconnect signal was received by the system.
Also, keep in mind that the use of Ground Start Centrex lines are not supported by the LEGEND system.
So ensure that the CO does not include any GS lines in the block of Centrex lines it assigns to the Legend
system.
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When consulting with the Central Office regarding Lines and Trunks, also determine the proper timer
setting for the disconnect signal from the CO.
When ISDN applications are being considered, the networking should be through an AT&T 4ESS switch
(Generic 13 or higher), operated by Network Systems in order for the customer to obtain the largest
selection of ISDN services. However, the MERLIN LEGEND Communications System also will operate
properly when connected to a telephone company 5ESS switch.