Alcatel-Lucent ALE M3 - Voice Quality Monitoring (VQM)

ALE M3-M5-M7-M8 DeskPhones Administrator Guide
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message sequence. The SIP INFO message can transmit DTMF digits in three ways: DTMF, DTMF-
Relay and Telephone-Event.
• SIP INFO + RFC 2833
The following table lists the parameters for configuring the transmitting DTMF digit:
Note: X means account ID and it can be number 1~8 for M3/M5/M7, 1-20 for M8.
Parameter
AccountXDtmfMode
config.xml
Description
It configures the mode for server GroupX when sending DTMF.
Permitted
Values
0 - None
1 - InBand
2 - RFC2833
3 - RFC4733
4 - SIP_INFO
5 - SIP_INFO+RFC2833
Default
2
Web UI
Account → Advanced → DTMF Mode
Parameter
SettingDtmfDuration
config.xml
Description
It configures the DTMF duration.
Permitted
Values
1 - 80ms
2 - 100ms
3 - 200ms
4 - 250ms
Default
2
Parameter
SettingDtmfFeedbackEnable
config.xml
Description
It enables or disables DTMF feedback.
Permitted
Values
false - disable
true - enable
Default
true
Web UI
Setting → Audio → Enable DTMF Feedback
Parameter
SettingDtmfLevel
config.xml
Description
It configures bias value of DTMF tone level.
Permitted
Values
[-6,6]
Default
0
Web UI
Setting → Audio → DTMF Level
7.12 Voice Quality Monitoring (VQM)
Voice quality monitoring feature allows the IP phones to generate various quality metrics for listening quality
and conversational quality. These metrics can be sent to a specific server in RTCP-XR packets. These
metrics can also be sent in SIP PUBLISH messages to a central voice quality report collector.