Application Guide

P a g e | 47
DP750/DP720 Administration Guide
Version 1.0.3.37
Call Settings
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 configured and supporting “484 Incomplete Address” responses.
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.
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-digit number;
b. xx – exactly 2-digit 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+}