AT&T MERLIN 3070 Administration Manual page 69

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Setting Up 3-digit Tables. The rest of Frank's tables will be 3-digit tables. These
tables specify line pool routing for calls to specific area codes or exchanges. Frank
begins numbering these tables with 7, the highest number available, then numbers
down (6, 5, etc.). As mentioned previously, this assures that space is available to add
6-digit tables in the future.
Frank begins by setting up Table 7 to route calls to the 20 exchanges in Prime's local
calling area. These are the only exchanges in area code 201 that can be called less
expensively on local lines than on the in-state (Band 0) WATS line, the default route.
Frank lists the 20 local area exchanges in the Area Code/Exchange section of the
form for Table 7. His first entry in the Pool column is "9," the number of the local line
pool. His second entry is "890," since the in-state WATS line pool is an acceptable,
though less economical, way to make these calls.
He doesn't enter an absorption code, since all the digits dialed by the user are dialed
by the system to place the call.