3Com VCX V7122, User Manual

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V7122 GatewayUser Guide
ini File Field Name
Web Parameter Name
Valid Range and Description
ComfortNoiseNegotiation
[Comfort Noise Generation
Negotiation]
Enables negotiation and usage of Comfort Noise (CN).
Valid options include:
0 = Disable (default)
1 = Enable Comfort Noise negotiation
The use of CN is indicated by including a payload type for CN on the
media description line of the SDP. The gateway can use CN with a
codec whose RTP timestamp clock rate is 8,000 Hz (G.711/G.726). The
static payload type 13 is used. The use of CN is negotiated between
sides; therefore, if the remote side doesn't support CN, it is not used.
Silence Suppression must be enabled to generate CN.
RTPSIDCoeffNum
Determines the number of spectral coefficients added to an SID packet
being sent according to RFC 3389. Valid only if
‘EnableStandardSIDPayloadType’ is set to 1.
The valid values are 0 (default), 4, 6, 8 and 10.
DTMFVolume
[DTMF Volume]
DTMF gain control value in dB (to the TDM side).
The valid range is -31 to 0 dB. The default value is -11 dB.
RxDTMFHangOverTime Defines the Voice Silence time (in msec units) after playing DTMF or MF
digits to the Tel / PSTN side that arrive as Relay from the IP side.
Valid range is 0 to 2,000 msec.
Default is 1,000 msec.
TxDTMFHangOverTime Defines the Voice Silence time (in msec units) after detecting the end of
DTMF or MF digits at the Tel / PSTN side when the DTMF Transport
Type is either Relay or Mute.
Valid range is 0 to 2,000 msec.
Default is 100 msec.
DTMFTransportType
[DTMF Transport Type]
0 = Erase digits from voice stream, do not relay to remote.
2 = Digits remain in voice stream.
3 = Erase digits from voice stream, relay to remote according to RFC
2833 (default).
This parameter is automatically updated if one of the
following parameters is configured: TxDTMFOption or
RxDTMFOption.
RFC2833PayloadType
[RFC 2833 Payload Type]
The RFC 2833 DTMF relay dynamic payload type.
Range: 96 to 99, 106 to 127; Default = 96
The 100, 102 to 105 range is allocated for proprietary usage.
When RFC 2833 payload type (PT) negotiation is used
(TxDTMFOption=4), this payload type is used for the
received DTMF packets. If negotiation isn’t used, this
payload type is used for receive and for transmit.
MGCPDTMFDetectionPoint
0 = DTMF event is reported on the end of a detected DTMF digit.
1 = DTMF event is reported on the start of a detected DTMF digit
(default).