Rtp, Rtcp And T.38 Parameters - AudioCodes Mediant 3000 User Manual

51.9.4 RTP, RTCP and T.38 Parameters

The RTP, RTCP and T.38 parameters are described in the table below.
Parameter
Web: Dynamic Jitter Buffer Minimum
Delay
EMS: Minimal Delay (dB)
[DJBufMinDelay]
Web: Dynamic Jitter Buffer
Optimization Factor
EMS: Opt Factor
[DJBufOptFactor]
Web: RTP Redundancy Depth
EMS: Redundancy Depth
[RTPRedundancyDepth]
Web: Enable RTP Redundancy
Negotiation
[EnableRTPRedundancyNegotiation]
User's Manual
Table 51-39: RTP/RTCP and T.38 Parameters
Global parameter that defines the minimum delay (in msec) of
the device's dynamic Jitter Buffer. You can also configure this
functionality per specific calls, using IP Profiles
(IpProfile_JitterBufMinDelay) or Tel Profiles. For a detailed
description of this parameter and for configuring this
functionality in the IP Profile table, see Configuring IP Profiles
on page 329, or in the Tel Profile table, see Configuring Tel
Profiles on page 326.
Note: If this functionality is configured for a specific profile, the
settings of this global parameter is ignored for calls associated
with the profile.
Global parameter that defines the Dynamic Jitter Buffer frame
error/delay optimization factor. You can also configure this
functionality per specific calls, using IP Profiles or Tel Profiles.
For a detailed description of this parameter and for configuring
this functionality in the IP Profile table, see Configuring IP
Profiles on page 329, or in the Tel Profile table, see
Configuring Tel Profiles on page 326.
Note: If this functionality is configured for a specific profile, the
settings of this global parameter is ignored for calls associated
with the profile.
Global parameter that enables the device to generate RFC
2198 redundant packets. You can also configure this
functionality per specific calls, using IP Profiles
(IpProfile_RTPRedundancyDepth). For a detailed description
of this parameter and for configuring this functionality in the IP
Profile table, see Configuring IP Profiles on page 329.
Note: If this functionality is configured for a specific IP Profile,
the settings of this global parameter is ignored for calls
associated with the IP Profile.
Enables the device to include the RTP redundancy dynamic
payload type in the SDP, according to RFC 2198.

[0] Disable (default)

[1] Enable
When enabled, the device includes in the SDP message the
RTP payload type "RED" and the payload type configured by
the parameter RFC2198PayloadType.
a=rtpmap:<PT> RED/8000
Where <PT> is the payload type as defined by
RFC2198PayloadType. The device sends the INVITE
message with "a=rtpmap:<PT> RED/8000" and responds with
a 18x/200 OK and "a=rtpmap:<PT> RED/8000" in the SDP.
Notes:

For this feature to be functional, you must also set the
parameter RTPRedundancyDepth to 1 (i.e., enabled).

Currently, the negotiation of "RED" payload type is not
supported and therefore, it should be configured to the
832
Description
Document #: LTRT-89738
Mediant 3000