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Disallowed Phone Number Lists (#404)
Description
This System Programming procedure specifies telephone numbers that users
cannot dial. For example, you may want to prevent calls to a specific telephone
number or to categories of numbers, such as international numbers. Use this
procedure to create up to four lists of up to 10 telephone numbers each.
Related Features
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After completing this procedure, you must use Disallowed List
Assignment (#405) to assign the Disallowed Phone Number Lists to
specific extensions.
Allowed Phone Numbers, Emergency Phone Numbers, and Marked
System Speed Dial Numbers override the Disallowed List.
The entries you must make to permit or restrict toll calls differ depending on
the setting for Toll Call Prefix (#402). This setting tells the system whether a
“0” (for operator-assisted calls) or “1” (for direct-dial calls) is required when
you make toll calls.
Considerations
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Each list entry can include up to 12 digits. You can use the wildcard
character (by pressing the [
Hold ] button on a system phone) to match any
single digit (it appears as “!” on the telephone display).
When a user dials a number that is on a Disallowed List for the user’s
extension, the user hears a reorder tone (fast busy signal) after dialing the
part of the number that is stored in the list (for example, an area code).
If you want to go to another programming procedure when entering phone
numbers in a list, you must use [
Next Procedure ] or [ Prev Procedure ] to do so
since entering [
# ] and a 3-digit code will be considered data for the number.
Valid Entries
Up to 12 digits including 0–9, [ # ], [ ✳ ], and [ Hold ] (any single digit)
Examples
The examples below show how to enter telephone numbers for a Disallowed
Phone Number List in Step 4 of “Programming.”
Specific Telephone Numbers. Enter the phone number exactly as you
would dial it. For example, to prevent calls to the local number 555-5678,
press [
5
] [
5
] [
5
] [
5
] [
6
] [
7
] [
8
].
All Telephone Numbers in One Area Code. The following list entries
prevent calls to the 900 area code:
-
-
Toll Call Prefix required
1900 and 0900
Toll Call Prefix not required
900 and 0900
5-52 Disallowed Phone Number Lists (#404)