Grandstream HT502 User Manual - Manual (Page 45)

FIRMWARE VERSION 1.0.14.1 HT502 USER MANUAL Page 43 of 54
dials a number. If set to “Yes”, an INVITE is sent using the dial-number collected thus
far; Otherwise, no INVITE is sent until the “(Re-)Dial” button is pressed or after about 5
seconds ha ve elapsed if the user forgets to press the “Re-Dial” button.
The “Yes” option should be used ONLY if there is a SIP proxy configured and the proxy
server supports 484 Incomplete Address response. Otherwise, the call will likely be
rejected by the proxy (with a 404 Not Found error).
This feature does NOT work with and should NOT be enabled for direct IP-to-IP calling.
Dial Plan Prefix Sets the prefix added to each dialed number.
Use # as Dial Key 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”, this “#” key can be included as part of number.
Dial Plan 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 2 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 11 digit
numbers with 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 combinations of numbers
with 11 digits which has a leading digit 1, but 5th digit cannot be 0 or 1. Or any length
of numbers with a minimum of 2 digits beginning with 2, with the leading digit
replaced with 011.
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):