To configure the Dial Plan Features, click Account—Advanced—Dian Plan.

1. Accept Digits:

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

2. Grammar:

Example	Description
x	any digit from 0-9;
xx+	at least 2 digit number;
^	exclude;
,	hear dial tone;
[3-5]	any digit of 3, 4, or 5;
[147]	any digit 1, 4, or 7;
<2=011>	replace digit 2 with 011 when dialing.

3. Examples:

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 of 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

Example 4:
{99,x+|[*x]+}:
When user dial 99, can hear dial tone again, user continue dial, dial tone will stop

Example 5:
{0xxxxxxx}:

Only 8 digits starting from 0 can be dialed.

4. Default:

{[x*]+}

Note:
Illegal input will fall back to default.

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