Grandstream Networks HT503 User Manual

 

Grandstream Networks, Inc. 

Page 27 of 38  

 

IP-to-IP calling.

Sets the prefix added to each dialed number. 

This allows users to configure the # key as the “Send” (or “Dial”) key.  If set to “Yes”, “#” 
will send the number.  In this case, this key is essentially equivalent to the “Dial” key.  If 
set to “No”, the “#” key can be included as part of a number. 

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; 

•  xx+ - at least 2 digits number; 

•   xx. – at least 1 digit number.  

•   ^ - exclude; 

•   [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 

•  < =1> - add a leading 1 to all numbers dialed, vice versa will remove 

a 1 from the number dialed 

•  | - 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 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. 

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 and the Dial Plan will be:  

{ [x*]+ }. 

 

Default is No.  When set to “Yes” a SUBSCRIBE for Message Waiting Indication will be 
sent periodically. 

When set to “Yes”, the “From” header along with Privacy and P_Asserted_Identity 
headers in outgoing INVITE messages will be set to anonymous, blocking Caller ID. 

Default is No.  If set to “Yes”, incoming calls with anonymous Caller ID will be rejected 
with a 486 busy message. 

Default is Standard. Choose the selection to meet some special requirements from 
Softswitch vendors.