User`s manual

SIP User's Manual 5. Web Management
Version 5.0 153 December 2006
2. Configure the Voice Settings according to Table 5-42.
3. Click the Submit button to save your changes.
4. To save the changes so they are available after a power fail, refer to Section 5.10.2 on
page 205.
Table 5-42: Media Settings, Voice Settings Parameters
Parameter Description
Voice Volume
[VoiceVolume]
Voice gain control in dB. This parameter sets the level for the transmitted
(IPÆTel) signal.
The valid range is -32 to 31 dB.
The default value is 0 dB.
Input Gain
[InputGain]
PCM input gain control in dB. This parameter sets the level for the received
(TelÆIP) signal.
The valid range is -32 to 31 dB.
The default value is 0 dB.
Note: This parameter is intended for advanced users. Changing it affects
other gateway functionalities.
Silence Suppression
[EnableSilenceCompression]
The parameter is used to
maintain backward compatibility.
Disable
[0] = Silence Suppression disabled (default).
Enable
[1] = Silence Suppression enabled.
Enable without adaptation
[2] = 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.
Note: If the selected coder is G.729, the following rules determine the value
of the ‘annexb’ parameter of the fmtp attribute in the SDP.
EnableSilenceCompression = 0 Æ ‘annexb=no’.
EnableSilenceCompression = 1 Æ ‘annexb=yes’.
EnableSilenceCompression = 2 and IsCiscoSCEMode = 0 Æ ‘annexb=yes’.
EnableSilenceCompression = 2 and IsCiscoSCEMode = 1 Æ ‘annexb=no’.
Echo Canceler
[EnableEchoCanceller]
The parameter is used to
maintain backward compatibility.
Off [0] = Echo Canceler disabled.
On
[1] = Echo Canceler enabled (default).
DTMF Transport Type
[DTMFTransportType]
DTMF Mute
[0] = Erase digits from voice stream, do not relay to
remote.
Transparent DTMF
[2] = Digits remain in voice stream.
RFC 2833 Relay DTMF
[3] = Erase digits from voice stream, relay to
remote according to RFC 2833 (default).
Note: This parameter is automatically updated if one of the following
parameters is configured: TxDTMFOption or RxDTMFOption.
MF Transport Type
[MFTransportType]
N/A.
DTMF Volume (-31 to 0 dB)
[DTMFVolume]
DTMF gain control value in dB (to the analog side).
The valid range is -31 to 0 dB.
The default value is -11 dB.
Enable Answer Detector
[EnableAnswerDetector]
N/A.
Answer Detector Activity Delay
[AnswerDetectorActivityDelay]
N/A.
Answer Detector Silence Time
[AnswerDetectorSilenceTime]
N/A.
Answer Detector Redirection
[AnswerDetectorRedirection]
N/A.
Answer Detector Sensitivity
[AnswerDetectorSensitivity]
Determines the Answer Detector sensitivity.
The range is 0 (most sensitive) to 2 (least sensitive).
The default is 0.