Dial Plan Rules:
1. Accept Digits: 1,2,3,4,5,6,7,8,9,0 , *, #, A,a,B,b,C,c,D,d
2. Grammar: x - any digit from 0-9;
a. xx+ - at least 2 digits number;
b. xx – exactly 2 digits number;
c. ^ - exclude;
d. . – wildcard, matches one or more characters
e. [3-5] - any digit of 3, 4, or 5;
f. [147] - any digit 1, 4, or 7;
g. <2=011> - replace digit 2 with 011 when dialing
h. < =1> - add a leading 1 to all numbers dialed, vice versa will
remove a 1 from the number dialed
i. | - or
• Example 1: {[369]11 | 1617xxxxxxx} –
Allow 311, 611, 911, and any 10-digit numbers of leading digits 1617
• Example 2: {^1900x+ | <=1617>xxxxxxx} –
Block any number with leading digits 1900 and add prefix 1617 for
any dialed 7-digit numbers
• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+} –
Allow any length of number with leading digit 2 and 10 digit-numbers
of leading digit 1 and leading exchange number between 2 and 9; If
leading digit is 2, replace leading digit 2 with 011 before dialing.
3. Default: Outgoing - {x+}
Example of a simple dial plan used in a Home/Office in the US:
{ ^1900x. | <=1617>[2-9]xxxxxx | 1[2-9]xx[2-9]xxxxxx | 011[2-9]x. | [3469]11 }
Explanation of example rule (reading from left to right):
• ^1900x. - prevents dialing any number started with 1900
• <=1617>[2-9]xxxxxx - allows dialing to local area code (617) numbers by
dialing 7 numbers and 1617 area code will be added automatically
• 1[2-9]xx[2-9]xxxxxx - allows dialing to any US/Canada Number with 11
digits length
• 011[2-9]x. - allows international calls starting with 011
• [3469]11 - allow dialing special and emergency numbers 311, 411, 611 and
911
Note: In some cases, user wishes to dial strings such as *123 to activate voice
mail or other application provided by service provider. In this case * should be
predefined inside dial plan feature. An example dial plan will be: { *x+ } which
allows the user to dial * followed by any length of numbers.
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