Grandstream Networks HT801 Administration Manual page 34

Forwards incoming call if not answered within a specific period of time when delayed
Delayed Call
Forward Wait call forward is activated locally (using *92 code). Default value is 20 seconds.
Timeout
No Key Entry Initiates the call within this time interval if no additional key entry during dialing stage.
Timeout Default is 4 seconds.
Early Dial Sends an early INVITE each time a key is pressed when a user dials a number.
Otherwise, only one INVITE is sent after full number is dialed (user presses Dial Key
or after "no key entry timeout" expires). This option should be used only if there is a SIP
proxy is configured and supporting 484 responses (Incomplete Address). Otherwise,
the call will likely be rejected by the proxy (with a 404 Not Found error). Default is No.
This feature is NOT designed to work with and should NOT be enabled for direct IP-to-
IP calling.
Dial Plan Prefix Adds specified prefix to dialed number.
Use # as Dial Key Treats "#" as the "Send" (or "Dial") key. If set to "No", this "#" key can be included as
part of the dialed number. Default is Yes.
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;
•
•
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;
[147] - any digit 1, 4, or 7;
f.
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
| - or
i.
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+} –
HT801 Administration Guide
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