AudioCodes Media Pack MP-11x, User Manual

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User's Manual 562 Document #: LTRT-65432
MP-11x & MP-124
Parameter Description
Web: RTP Base UDP Port
EMS: Base UDP Port
[BaseUDPport]
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:

MP-112/MP-114: BaseUDPport to (BaseU
3*10)

MP-118: BaseUDPport to (BaseU 7*10)

MP-124: BaseUDPport to (BaseU 23*10)
Notes:

For this parameter to take effect, a device reset is
required.

You can define a UDP port range per Media Realm (see
Configuring Media Realms on page
188 ).

The UDP ports are allocated randomly to channels.

If RTP Base UDP Port is not a factor of 10, the following
message is generated: 'invalid local RTP 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 parameter.
EMS: No Op Payload Type
[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.
[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.
RTP Control Protocol Extended Reports (RTCP XR) Parameters