AudioCodes Mediant 4000 SBC User Manual page 988

CHAPTER 60 Configuration Parameters Reference
'T38 Fax Max Buffer'
configure voip > sip-
definition settings > t38-
fax-mx-buff
[T38FaxMaxBufferSize]
No-Op Packets Parameters
no-operation-enable
[NoOpEnable]
[NoOpInterval]
no-operation-interval
[RTPNoOpPayloadType]
RTP Control Protocol Extended Reports (RTCP XR) Parameters
For more information on RTCP XR, see
'Enable RTCP XR'
configure voip > media
rtp-rtcp > voice-quality-
monitoring-enable
[VQMonEnable]
'Minimum Gap Size'
[VQMonGMin]
Parameter Description
Defines the maximum size (in bytes) of the device's
T.38 buffer. This value is included in the outgoing SDP
when T.38 is used for fax relay over IP.
The valid range is 500 to 3000. The default is 3,000.
Enables the transmission of RTP or T.38 No-Op
packets.
■ [0] = Disable (default)
■ [1] = Enable
This mechanism ensures that the NAT binding
remains open during RTP or T.38 silence periods.
Defines the time interval in which RTP or T.38 No-Op
packets are sent in the case of silence (no RTP/T.38
traffic) when No-Op packet transmission is enabled.
The valid range is 20 to 65,000 msec. The default is
10,000.
Note: To enable No-Op packet transmission, use the
[NoOpEnable] parameter.
Defines the payload type of No-Op packets.
The valid range is 96 to 127 (for the range of Dynamic
RTP Payload Type for all types of non hard-coded
RTP Payload types, refer to RFC 3551). The default is
120.
Note: When defining the parameter, ensure that it
doesn't cause collision with other payload types.
Configuring RTCP XR.
Enables voice quality monitoring and RTCP XR,
according to RFC 3611.
■ [0] Disable (default)
■ [1] Enable Fully = Calculates voice quality
metrics, uses them for QoE calculations, reports
them to OVOC (if configured), and sends them to
remote side using RTCP XR.
■ [2] Enable Calculation Only = Calculates voice
quality metrics, uses them for QoE calculations,
reports them to OVOC (if configured), but does not
send them to remote side using RTCP XR.
Defines the voice quality monitoring - minimum gap
size (number of frames).
The default is 16.
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Mediant 4000 SBC | User's Manual