7.6.
Assigning the Data Filter to a Port
After the Data Filter is defined, the next step is to assign the filter
to one or more of the three input ports. The port configuration
menus are used to assign one of the two available Data Filters to
each port as described in Section 4.4. Note that Data Filters will
not function unless they are assigned to a port.
7.7.
Data Filter Definition Examples
The following examples are based on fictional PBX call record
formats. When designing your Data Filter, be aware that the
record format will differ from those shown in the examples. When
defining the Data Filter Format and Match Parameters the
following factors should be considered:
·
Exact Match:
Alphanumeric values in parameter definitions
must
exactly
match those found in the call record. If the
record lists the time as "09:00", then the parameter definition
must also list time as "09:00" (not "0900" or "9:00").
·
Number of Characters :
For any given variable, the number
of characters specified in the Data Filter Format must
exactly
match the number of characters indicated in the Match
Parameters definition. For example, if the filter format
defines "B" as the first seven characters of the number dialed,
the parameter definition must account for all seven characters.
·
Cumulative Effect :
Each time a Data Filter Clue is defined,
NetLink will add the new parameter to the existing definition.
When multiple clues are defined, an OR condition is created.
If the call record matches a defined clue, the record is then
stored or rejected as indicated by the Data Filter Action.
·
Searching for Operator Characters:
When searching for a
text string which contains a space character or any character
that is also an operator, a backslash (
\
) must precede the
space or operator character. For example, to search for the
string "
***Error***
", match parameters would be defined
as "
\*\*\*Error\*\*\*
". Likewise, when searching for
the string "
hello there
", match parameters would be
defined as "
hello\ there
".
·
Variable Case:
When defining and using variables, take care
to use the correct case. Real Time variables are always
entered as lowercase characters; regular variables are always
entered as uppercase characters.
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