Voice Activity Detection; Signaling Digit Relay Mode; Codec/Frame Size/Frames Per Packet - Dialogic DMG1000 User Manual

Parameter Reference
Default Value = Off
INI File Parameter Name = gwRTPValidateSrcPort
Note: Unit requires a restart if this parameter value is changed.

Signaling Digit Relay Mode

Description: Specifies if out-of-band messages are used to transport DTMF tones between the
Media Gateway and VoIP endpoints.
Note: This parameter should be set to Off when the Operating Mode parameter is set to either SIP
Emulating or SIP Driving.
Allowed Values:
• On
• Off
Default Value = On
INI File Parameter Name = gwSigDigitRelay

Voice Activity Detection

Description: Enables the use of voice activity detection (VAD) to reduce the amount of audio data
traffic. If VAD is enabled, the unit will stop the transmission of RTP audio data when no voice
activity is detected on the telephony port. Transmission is continued when voice activity is
detected. This drastically reduces the amount of audio traffic on the network.
Allowed Values:
• On = Voice activity detection is enabled.
Off = Voice activity detection is disabled.
•
Default Value = On
INI File Parameter Name = dspVAD

Codec/Frame Size/Frames Per Packet

Description: Refers to the type of coder/decoder used for voice compression. The parameter
values for each Codec type are defined in
Note: (For DMG1000 only) If secure RTP (SRTP) is enabled, then you must select 30 msec frame sizes
for G.711.
76
®
Dialogic 1000 and 2000 Media Gateway Series User's Guide — September 2007
Table 1, "Coder/Decoder Parameters", on page 77.
Dialogic Corporation