VopTel Technology Co., Ltd
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Name
Description
DTMF method
Transmission modes of DTMF signal supported by the gateways include
Audio, RFC 2833 and SIP INFO. The default value is Audio.
Audio: DTMF signal is transmitted to the platform with sessions;
SIP INFO: Separate DTMF signal from sessions and transmit it to the
platform in the form of SIP INFO messages;
RFC 2833: Separate DTMF signal from sessions and transmit it to the
platform through RTP data package in the format of RFC2833.
2833 payload type
Used with “RFC 2833” in the DTMF transmission modes. The default
value of 2833 payload type is 100. The effective range available: 96 ~
127. This parameter should match the setting of far-end device (eg.
platform).
DTMF on-time
This parameter sets the on time (in ms) of DTMF signal sent from FXO
port. The default value is 100 ms. Generally, the duration time should be
set in the range of 80 ~ 150 ms.
DTMF off-time
This parameter sets the off time (ms) of DTMF signal sent from FXO
port. The default value is 100 ms. Generally, the interval time should be
set in the range of 80 ~ 150 ms.
DTMF detection
threshhold
Minimum duration time of effective DTMF signal. Its effective range is
32-96 ms and the default valie is 48 ms. The greater the value is set, the
more stringent the detection is.
Table 2-5
Codec Methods Supported by Gateways
Codec Supported by VG
Bit Rate (Kbit/s)
Time Intervals of RTP Package
Sending (ms)
iLBC
13.3/15.2
20/30
GSM
13
20
G729A 8
10/20/30/40
G723 5.3/6.3
30/60
PCMU/PCMA 64
10/20/30/40
2.3.3
SIP Configuration
After login, click “Basic> SIP” tab to open the SIP configuration interface.
Figure 2-4
SIP Configuration Interace