AT&T MERLIN LEGEND Reference page 79

Planning
5. Indicate the features available on each BRI line:
a. To indicate All-Call Privacy/Per-Call Privacy, put a check mark in the
"ACP" column.
b. To indicate Calling Party Number/Billing Number, put a check mark in
the "CPN" column.
c. To indicate Automatic Callback, put a check mark in the "AC" column.
d. To indicate Automatic Recall, put a check mark in the "AR" column.
e. To indicate Customer Originated Trace, put a check mark in the "COT"
column.
f. To indicate the Multi-Line Hunt Group feature, put a check mark in the
"MLHG" column.
g. To indicate Multi-Level Precedence and Preemption, put a check mark
in the "MLPP" column.
Clock Synchronization
If the system includes both 800 CO-BRI and 100D modules, clock
synchronization planning should be completed at the same time. There is only
one primary/secondary/tertiary clock for both 800 CO-BRI modules and 100D
modules, with the same system programming screens used for both types.
Plan your clock source administration to minimize the need for clock switching,
which is known to cause noise on active calls.
The primary, secondary and tertiary clock sources, all three of which should be
administered if possible, should be set in the following order:
a. The loop clock source on any 100D module connected to the CO.
b. The loop clock sources on connected BRI DSLs on the same module, with
preference given to ones that are used to consistently transmit data (as
opposed to voice).
c. The loop clock source on any 100D module in T1 mode operating in a tie-
trunk configuration.
d. The local clock source on any 100D module.
Extra BRI DSLs which are not connected should never be administered as clock
sources.
Line Options
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