AT&T MERLIN 3070 Administration Manual page 60

Pool, Absorb, and Other Digits Section. The Pool column of each ARS table con-
tains the numbers of your line pools (9, 890 through 899), listed in the order you want
them selected for calls made to the area codes and exchanges entered in the Area
Code/Exchange section.
The Absorb column entry shows how many, if any, of the digits dialed by the caller
should be absorbed (not dialed) by the system when it places these calls. This is done
to be sure you get the full benefit from any special-purpose lines in your system such
as FX lines and tie lines. You include an absorption type (see list below) in your tables
to let the system route all appropriate calls to these lower-cost line pools.
Digit absorption doesn't interfere with call restriction or SMDR, if you have ad-
ministered these features. The digits dialed by the caller are recorded for SMDR,
while the digits dialed by the system are checked to be sure the call is allowed.
The default value for the absorption type is 0, which means the system places a call
using the same set of digits that the caller dialed. The other five absorption types
tell the system not to dial the following digits dialed by the caller:
The leading 1 (absorption type 1)
The area code (absorption type 2)
1 plus the area code (absorption type 3)
1 plus the exchange (absorption type 4)
1 plus the area code plus the exchange (absorption type 5)
For example, a branch office in Bowling Green, Ohio has a tie line pool to company
headquarters in Detroit, Michigan. The complete telephone number at headquarters
is an Ii-digit number, 1 + 313 + 7 digits. People in the branch office dial all eleven
digits, but the system dials only the last four digits to place the call. The branch of-
fice administrator has associated absorption type 5 with the number of the tie line
pool in her ARS tables. This tells the system to absorb the 1, the area code, and the
exchange, so that the call can be placed on one of the tie lines.
TYPICAL DEFAULT AND SPECIAL NUMBERS TABLES
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