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FIRMWARE VERSION 1.0.4.23 GXP1100/GXP1105 USER MANUAL Page 28 of 46
on the phone. This ID is usually the VM portal access number. For
example, in Asterisk server, 8500 could be used.
Send DTMF
Specifies
the mechanism to transmit DTMF digits. There are 3
supported modes: in audio which means DTMF is combined in the audio
signal (not very reliable with low-bit-rate codecs), via RTP (RFC2833), or
via SIP INFO.
DTMF Payload Type
Configures the payload type for DTMF using RFC2833. The default
value is 101.
Early Dial
Selects whether or not to enable early dial. If it's set to "Yes", the SIP
proxy must support 484 response. The default setting is "No".
Dial Plan Prefix Sets the prefix added to each dialed number.
Dial Plan
A dial plan establishes the expected number and pattern of digits for a
telephone number. This parameter configures the allowed dial plan for
the phone.
Dial Plan Rules:
1. Accepted 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 numbers
b) xx. - only 2 digit numbers
c) ^ - exclude
d) [3-5] - any digit of 3, 4, or 5
e) [147] - any digit of 1, 4, or 7
f) <2=011> - replace digit 2 with 011 when dialing
g) | - the OR operand
• Example 1: {[369]11 | 1617xxxxxxx}
Allow 311, 611, and 911 or any 10 digit numbers with leading digits 1617;
• Example 2: {^1900x+ | <=1617>xxxxxxx}
Block any number of leading digits 1900 or add prefix 1617 for any
dialed 7 digit numbers;
• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+}
Allows any number with leading digit 1 followed by a 3 digit number,
followed by any number between 2 and 9, followed by any 7 digit
number OR Allows any length of numbers with leading digit 2, replacing
the 2 with 011 when dialed.