AudioCodes Mediant 500L - Page 1107

Version 7.2 1107 Mediant 500L Gateway & E-SBC
User's Manual 69. Configuration Parameters Reference
Parameter Description

[3] = Options 1 and 2 are used.
Note:
 For the parameter to take effect, a device reset is required.
 If the device is located in a network subnet which is
connected to other gateways using a router that uses
Virtual Router Redundancy Protocol (VRRP) for
redundancy, then set the parameter to 0 or 2.
RTP Base UDP Port
configure voip > media rtp-
rtcp > 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 more information on configuring the UDP port range,
see ''Configuring RTP Base UDP Port'' on page 203.
The range of possible UDP ports is 6,000 to 65,535. The
default base UDP port is 6000.
Note: For the parameter to take effect, a device reset is
required.
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: The parameter is applicable only to the Gateway
application.
No-Op Packets Parameters
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.
[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.
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 the parameter, ensure that it doesn't
cause collision with other payload types.
RTP Control Protocol Extended Reports (RTCP XR) Parameters
For more information on RTCP XR, see ''Configuring RTCP XR'' on page 909.