Grandstream Networks GXP1610 Administration Manual page 26

Use First Matching
Vocoder in 200OK SDP
Disable Multiple m line
in SDP
SRTP Mode
Symmetric RTP
Silence Suppression
Voice Frames Per TX
G.726-32 Packing
Mode
Jitter Buffer Type
Jitter Buffer Length
Account x -> Call Settings
Early Dial
Dial Plan Prefix
Dial Plan
included with the same preference order in SDP message.
When set to "Yes", the device will use the first matching vocoder in the
received 200OK SDP as the codec. The default setting is "No".
If enabled, the phone always responses 1 m line in SDP regardless multiple
m lines are offered.
Enables the SRTP mode based on your selection. The default setting is
"Disabled".
Defines whether symmetric RTP is supported or not. The default setting is
"No".
Controls the silence suppression/VAD feature of the audio codec except for
G.723 (pending) and G.729. If set to "Yes", when silence is detected, a small
quantity of VAD packets (instead of audio packets) will be sent during the
period of no talking. If set to "No", this feature is disabled. The default setting
is "No".
Configures the number of voice frames transmitted per packet. When
configuring this, it should be noted that the "ptime" value for the SDP will
change with different configurations here. This value is related to the codec
used and the actual frames transmitted during the in payload call. For end
users, it is recommended to use the default setting, as incorrect settings may
influence the audio quality.
Selects "ITU" or "IETF" for G.726-32 packing mode. The default setting is
"IETF".
Selects either Fixed or Adaptive based on network conditions. The default
setting is "Adaptive".
Defines jitter buffer length based on network conditions.
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".
Sets the prefix added to each dialed number.
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
<2=011> - replace digit 2 with 011 when dialing
f)
g) | - the OR operand

Example 1: {[369]11 | 1617xxxxxxx}
Allow 311, 611, and 911 or any 11 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
digitnumbers;

Example 3: {1xxx[2-9]xxxxxx | <2=011>x+}
GXP1610/GXP1620/GXP1625/GXP1628
Administration Guide
Page 25 of 48