User's Manual
FIRMWARE VERSION 1.0.0.3 GXP2140 USER MANUAL   Page 46 of 77 
users, it is recommended to use the default setting, as incorrect settings may 
influence the audio quality. 
G.726-32 Packing Mode 
Selects "ITU" or "IETF" for G726-32 packing mode. 
Jitter Buffer Type 
Selects  either  Fixed  or  Adaptive  based  on  network  conditions.  The  default 
setting is "Adaptive". 
Jitter Buffer Length 
Selects  Low,  Medium,  or  High  based  on  network  conditions.  The  default 
setting is "Medium". 
Account x -> Call Settings 
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. 










