Valid Rule Characteristics

Function

0 1 2 3 4 5 6 7 8 9 * #

Exact match of the dialed digit.

x or X

Exact match of any dialed single digit.

?

Match all remaining digits at the end of a dialed digit string.

[ ]

Remove the group of digits

( )

Insert the group of digits

<space> or -

Ignored by the rule.

Used only to make rules more readable.

+

Used for E.164 dialing.

Rule example

Function

[*99]?

Removes *99 from a digit string of any length.

This is used to define *99 as an escape code.

An escape code must be the first rule of a rule list. It ensures that a complete digit string is forwarded after a user dials an escape code.

[911](5555)

Remove the digits 911 and insert 5555.

This rule translates 911 to 5555. It does not affect any other dialled digits.

[581] 4XXX

Removes 581 from all 4-digit numbers that start with a 4.

Typically used to remove an office code. This rule translates 581–4165 to 4165

[623 581] 7xxx

Removes 623 581 from all 4-digit numbers that start with a 7.

Typically used to remove an office and area code. This rule translates 623–581–7134 to 7134

(9–602) xxx-XXXX

Inserts 9–602 for all numbers in the xxx-XXXX range.

Typically used to prepend an access code and an area code.

This rule translates 123–8913 to 9–602–123–8913

(8–991) [815–784]-7XXX

Inserts 8–991 and removes 815–784 for all numbers in the 7XXX range.

This rule translates 815–784–7123 to 8–991–7123.

(9)0xxx-xxx-xxxx?

Inserts 9 for all numbers beginning with a 0, and at least 10 digits (3+3+4)