AudioCodes MP-11x User Manual page 560

Parameter
Web: Enable RTP Redundancy
Negotiation
[EnableRTPRedundancyNegotiation]
Web: RFC 2198 Payload Type
EMS: Redundancy Payload Type
[RFC2198PayloadType]
Web: Packing Factor
EMS: Packetization Factor
[RTPPackingFactor]
Web/EMS: Basic RTP Packet Interval
[BasicRTPPacketInterval]
Web: RTP Directional Control
[RTPDirectionControl]
Web/EMS: RFC 2833 TX Payload
Type
[RFC2833TxPayloadType]
User's Manual
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
same PT value for both parties.
Defines the RTP redundancy packet payload type according
to RFC 2198.
The range is 96 to 127. The default is 104.
Note: This parameter is applicable only if the parameter
RTPRedundancyDepth is set to 1.
N/A. Controlled internally by the device according to the
selected coder.
N/A. Controlled internally by the device according to the
selected coder.
N/A. Controlled internally by the device according to the
selected coder.
Defines the Tx RFC 2833 DTMF relay dynamic payload
type.
The valid range is 96 to 99, and 106 to 127. The default is
96. The 100, 102 to 105 range is allocated for proprietary
usage.
Notes:

Certain vendors (e.g., Cisco) use payload type 101 for
RFC 2833.

When RFC 2833 payload type negotiation is used (i.e.,
the parameter TxDTMFOption is set to 4), this payload
type is used for the received DTMF packets. If
negotiation isn't used, this payload type is used for
receive and for transmit.
560
MP-11x & MP-124
Description
Document #: LTRT-65432