Version 6.6 591 Mediant 2000
User's Manual 45. Configuration Parameters Reference
Parameter Description
Notes:
 For this parameter to take effect, a device reset is required.
 The UDP ports are allocated randomly to channels.
 You can define a UDP port range per Media Realm (see
Configuring Media Realms on page 177).
 If RTP Base UDP Port is not a factor of 10, the following
message is generated: 'invalid local RTP port'.
Web: Remote RTP Base UDP
Port
EMS: Remote Base UDP Port
[RemoteBaseUDPPort]
Defines the lower boundary of UDP ports used for RTP, RTCP and
T.38 by a remote device. If this parameter is set to a non-zero
value, ThroughPacketâ„¢ (RTP multiplexing) is enabled. The device
uses this parameter (and BaseUDPPort) to identify and distribute
the payloads from the received multiplexed IP packet to the
relevant channels.
The valid range is the range of possible UDP ports: 6,000 to
64,000. The default is 0 (i.e., RTP multiplexing is disabled).
Notes:
 The value of this parameter on the local device must equal the
value of BaseUDPPort on the remote device.
 To enable RTP multiplexing, the parameters
L1L1ComplexTxUDPPort and L1L1ComplexRxUDPPort must
be set to a non-zero value.
 When VLANs are used, RTP multiplexing is not supported.
 This parameter can also be configured in an IP Profile.
 For more information on RTP multiplexing, see RTP
Multiplexing (ThroughPacket) on page 169.
Web: RTP Multiplexing Local
UDP Port
[L1L1ComplexTxUDPPort]
Defines the local (source) UDP port for outgoing multiplexed RTP
packets, for RTP multiplexing.
The valid value is the range of possible UDP ports: 6,000 to
64,000. The default is 0 (i.e., RTP multiplexing is disabled).
Note: For this parameter to take effect, a device reset is required.
Web: RTP Multiplexing
Remote UDP Port
[L1L1ComplexRxUDPPort]
Defines the remote UDP port to where the multiplexed RTP
packets are sent and the local UDP port for incoming multiplexed
RTP packets, for RTP multiplexing.
The valid value is the range of possible UDP ports: 6,000 to
64,000. The default is 0 (i.e., RTP multiplexing is disabled).
Notes:
 For this parameter to take effect, a device reset is required.
 All devices that participate in the same RTP multiplexing
session must use this same port.
EMS: No Op 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
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