Audio Compression; Rtp Digit Relay Mode - Dialogic DMG1000 User Manual

Parameter Reference
3.6.2.3 Audio Group
The Audio subgroup includes the following parameters:
•

Audio Compression

•

RTP Digit Relay Mode

• RTP Fax/Modem Tone Relay Mode
RTP Source IP Address Validation
•
• RTP Source UDP Port Validation
• Signaling Digit Relay Mode
• Voice Activity Detection
Codec/Frame Size/Frames Per Packet
•
Audio Compression
Description: Sets the audio coder/decoder to be used by the Media Gateway.
Allowed Values:
• G.711u/G.711a = G.711 uLaw preferred, G.711 aLaw secondary
G.711u = G.711 uLaw only
•
• G.711a = G.711 aLaw only
• G.723.1 = G.723.1 only
• G.729AB = G.729AB only
Default Value = G.711u/G.711a
INI File Parameter Name = dspCompression
Note: Unit requires a restart if this parameter value is changed.
RTP Digit Relay Mode
Description: Selects the Realtime Transfer Protocol (RTP) method by which dual tone multi-
frequency (DTMF) tones are transported between the Media Gateway and VoIP endpoints.
Note: The Inband-Tone method passes the digits as audio data in the RTP stream, and is only reliable
when the parameter Audio Compression is set to G.711 only. The AVT method uses RFC 2833
RTP packets to pass the digits.
Allowed Values (Phone Emulating):
None = The Media Gateway will not use RTP packets to transmit/receive tone information.
•
• RFC2833 = The (DTMF) tone information is sent between the Media Gateway and VoIP
endpoints via RTP packets as defined by RFC 2833.
Note: A payload type of 101 is used in the implementation of the RFC2833 method.
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Dialogic 1000 and 2000 Media Gateway Series User's Guide — September 2007
Dialogic Corporation