Unicorn 3101 User Manual
Copyright © 2008
Hanlong Technology Co., Ltd Page 23 of 29
including G.711 A-/U-law, G.726 (Supports bit rates 16,
24, 32 and 40 note:optional), G.723.1, G.729A/B,
iLBC(note:optional). The user can configure Vocoders in
a preference list that will be included with the same
preference order in SDP message. The first Vocoder is
entered by choosing the appropriate option in “Choice 1”.
The last Vocoder is entered by choosing the appropriate
option in “Choice 8”.
G723 Rate:
This defines the encoding rate for G723 vocoder. By
default, 6.3kbps rate is chosen.
iLBC Frame Size:
This sets the iLBC size in 20ms or 30ms
iLBC Payload Type:
This defines payload time for iLBC. Default value is
98
.
The valid range is between 96 and 127.
G726-16 Payload Type
default is
100
.
G726-24 Payload Type
Default is
99
.
Option
Meaning
G726-40 Payload Type
Default value is
103
, range is from
96
to
123
.
G729E Payload Type:
Default value is
102
, range is from
96
to
127
.
VAD
Default is “No”. VAD allows detecting the absence of
audio and conserve bandwidth by preventing the
transmission of "silent packets" over the network.
Symmetric RTP
Default is
No
. When set to Yes the device will change the
destination to send RTP packets to the source IP address
