FaxBack NET SatisFAXtion 8.7 (Including R3) - Manual User Manual
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2 – Server Administration
NET SatisFAXtion 8.7 Manual
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Click Modify Rule. The window will close. 
Now, 10 digit numbers supplied to the server will have the first 3 digits 
trimmed, if those 3 digits are your local area code. You can test this by clicking 
the Validate button on the main Validation Editor interface. Enter some example 
input numbers, and verify the OUTPUT: listed in the results window is correct. 
Illustration 2.6.3.4#3: Validation – After Editing Trim Local Area Code
