
Synway Information Engineering Co., Ltd
SMG Series Analog Gateway User Manual (Version 1.6.4)
Page 33
CODEC Priority
Supported CODECs and their corresponding priority for the IP end to establish a
call conversation. The table below explains the sub-items:
Sub-item Description
Priority
Priority for choosing the CODEC in an SIP conversation. The
smaller the value is, the higher the priority will be.
CODEC
Three optional CODECs are supported:
G711A
,
G711U
,
G729A/B
,
G723
, G722
, AMR, iLBC, SILK(16K), OPUS(16K),
SILK(8K) and OPUS(8K).
Packing Time
Time interval for packing an RTP packet, calculated by ms.
Bit Rate
The number of thousand bits (excluding the packet header) that
are conveyed per second.
By default, all of the eleven CODECs are supported and ordered
G711A, G711U,
G729A/B, G723, G722, AMR, iLBC, SILK(16K), OPUS(16K), SILK(8K)
and
OPUS(8K)
by priority from high to low.
The packing time and bit rate supported by different CODECs are listed in the table
below. Those values in bold face are the default values.
COEDC
Packing Time (ms)
Bit Rate (kbps)
G711A
5 / 10 /
20
/ 30 / 40 / 50 / 60
64
G711U
5 / 10 /
20
/ 30 / 40 / 50 / 60
64
G729A/
B
20 8
G723
30
/ 60 / 90
5.3 /
6.3
G722
5 / 10 / 20 /
30
/ 40
64
AMR
20
/ 40 / 60 / 80 / 100
4.75 / 5.15 / 5.90 /
6.70
/ 7.40 /
7.95 / 10.20 / 12.20
20
/ 40
15.2
30 13.3
iLBC
60
13.3 / 15.2
SILK(16K)
20
/40 / 60
20
OPUS(16K)
10 /
20
/ 40 / 60
20
SILK(8K)
20
/40 / 60
12
OPUS(8K)
10 /
20
/ 40 / 60
12
3.5 Advanced Settings
Advanced Settings includes fourteen parts:
FXS
,
FXO
,
Tone Detector
,
Tone Generator
,
DTMF
,
Ringing Scheme
,
Fax
,
Function Key
,
Dialing Rule
,
Dialing Timeout
,
Cue Tone, Color Ring,
QoS
and
Action URL
. See Figure 3-27.
FXS
is used to configure the general properties of the
FXS port,
FXO
is used to configure the general properties of the analog voice ports, such as the
conditions for sending the caller party information.
Tone Detector
is used to configure some
properties of detected tones.
Tone Generator
is used to configure some properties of generated
tones.
DTMF
is used to set the properties related to DTMF.
Ringing Scheme
is used to set the
ringing scheme for the FXS port.
Fax
is used to configure multiple fax parameters.
Function Key
is used to set a cluster of combination keys for you to query a related number.
Dialing Rule
and
Dialing Timeout
are used to set the judging conditions for dialing.
Cue Tone
is used to set the
gateway language for playing voice and the voice file used for the two-stage dialing.
Color Ring
is
used to upload the color ring file which can be set as a ringback tone for an incoming call from IP