3Com VCX V7122 User Manual page 135

ini File Field Name
*
Web Parameter Name
V32ModemTransportType
[V.32 Modem Transport Type]
V34ModemTransportType
[V.34 Modem Transport Type]
InputGain
[Input Gain]
VoiceVolume
[Voice Volume]
RTPRedundancyDepth
[RTP Redundancy Depth]
RFC2198PayloadType
EnableSilenceCompression
[Silence Suppression]
The parameter SCE is used to
maintain backward compatibility.
EnableEchoCanceller
[Echo Canceler]
The parameter ECE is used to
maintain backward compatibility.
EnableStandardSIDPayloadType
[Enable RFC 3389 CN Payload
Type]
DTMFVolume
[DTMF Volume]
3Com VCX V7122 SIP VoIP Gateway User Manual
Valid Range and Description
V.32 Modem Transport Type that the gateway uses.
You can select:
0 = Transparent.
2 = Modem Bypass (default).
Note: This option applies to V.32 and V.32bis modems.
V.34 Modem Transport Type that the gateway uses.
You can select:
0 = Transparent.
2 = Modem Bypass (default).
Note: This option applies to V.34 and V.90 modems.
PCM input gain control in dB. This parameter sets the level for the received
(PSTN IP) signal.
You can enter a value from -32 to 31 dB.
The default value is 0 dB.
Note: This parameter is intended for advanced users. Changing it affects other
gateway functionalities.
Voice gain control in dB. This parameter sets the level for the transmitted
(IP PSTN) signal.
You can enter a value from -32 to 31 dB.
The default value is 0 dB.
0 = Disable redundancy packets generation (default).
1 = Enable generation of RFC 2198 redundancy packets.
RTP redundancy packet payload type, according to RFC 2198.
The range is 96-127. The default is 104.
Applicable if "RTPRedundancyDepth=1".
0 = Silence Suppression disabled (default).
1 = Silence Suppression enabled.
2 [Enable without adaptation] = A single silence packet is sent during silence period
(applicable only to G.729).
Silence Suppression is a method conserving bandwidth on VoIP calls by not
sending packets when silence is detected.
0 = Echo Canceler disabled.
1 = Echo Canceler Enabled (default).
Note: Refer also to the parameters 'MaxEchoCancellerLength' and
'EchoCancellerLength' (described in
0 = Disable (default).
1 = Enable.
If enabled, the SID (comfort noise) packets are sent with the RTP SID payload type
according to RFC 3389. Applicable to G.711 and G.726 coders.
If disabled, the G.711 SID packets are sent in a proprietary method.
-31 to 0 corresponding to -31 dBm to 0 dBm in 1 dB steps (default = -11 dBm) DTMF
gain control.
Table 24 on page 94).
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