AudioCodes Mediant 3000 User Manual page 737

User's Manual
Parameter
[EnableMediaUDPChecksum
]
Web: RTP Base UDP Port
EMS: Base UDP Port
[BaseUDPport]
EMS: No Op Enable
[NoOpEnable]
EMS: No Op Interval
[NoOpInterval]
EMS: No Op Payload Type
[RTPNoOpPayloadType]
Version 6.6
and video).

[0] = (Default) Disable - the outgoing UDP packets carry the
value of 0x00 (i.e., no checksum) in the UDP checksum field of
the UDP header.

[1] = Enable - UDP checksum is added in the outgoing UDP
header.
Note: For this parameter to take effect, a device reset is required.
Defines the lower boundary of the UDP port used for RTP, RTCP
(RTP port + 1) and T.38 (RTP port + 2). For example, if the Base
UDP Port is set to 6000, then one channel may use the ports RTP
6000, RTCP 6001, and T.38 6002, while another channel may use
RTP 6010, RTCP 6011, and T.38 6012, and so on.
The range of possible UDP ports is 6,000 to 64,000. The default
base UDP port is 6000.
Once this parameter is configured, the UDP port range (lower to
upper boundary) is calculated as follows:

Mediant 3000/TP-6310: BaseUDPport to (BaseUDPport +
4031*10)

Mediant 3000/TP-8410: BaseUDPport to (BaseUDPport +
4031*10)
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 194).

If RTP Base UDP Port is not a factor of 10, the following
message is generated: 'invalid local RTP port'.
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 this parameter, ensure that it doesn't cause
collision with other payload types.
737
53. Configuration Parameters Reference
Description
Mediant 3000