AudioCodes Mediant 500 E-SBC, User Manual

Page: 788 / 920

User's Manual 788 Document #: LTRT-10437
Mediant 500 E-SBC
Parameter Description
Web: RTP Base UDP Port
EMS: Base UDP Port
[BaseUDPport]
Global parameter that defines the lower boundary of the UDP
port used for RTP, RTCP (RTP port + 1) and T.38 (RTP port +
2). For a detailed description of configuring the UDP port
range, see Configuring RTP Base UDP Port on page
176 .
Note: For this parameter to take effect, a device reset is
required.
EMS: No Op Enable
CLI: no-operation-enable
[NoOpEnable]
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.
EMS: No Op Interval
[NoOpInterval]
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.
EMS: No Op Payload Type
CLI: no-operation-interval
[RTPNoOpPayloadType]
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 this parameter, ensure that it doesn't
cause collision with other payload types.
CLI: rtcp-act-mode
[RTCPActivationMode] Disables RTCP traffic when there is no RTP traffic. This
feature is useful, for example, to stop RTCP traffic that is
typically sent when calls are put on hold (by an INVITE with
'a=inactive' in the SDP).

[0] Active Always = (Default) RTCP is active even during
inactive RTP periods, i.e., when the media is in 'recvonly' or
'inactive' mode.

[1] Inactive Only If RTP Inactive = No RTCP is sent when
RTP is inactive.
Note: This parameter is applicable only to Gateway calls (not
SBC).
RTP Control Protocol Extended Reports (RTCP XR) Parameters
Web: Enable RTCP XR
EMS: RTCP XR Enable
CLI: voice-quality-monitoring-enable
[VQMonEnable]
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 SEM (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
SEM (if configured), but does not send them to remote side
using RTCP XR.
Note: For this parameter to take effect, a device reset is
required.