AudioCodes Mediant 800B User Manual page 731

User's Manual
Parameter
Web/EMS: Analog Signal Transport
Type
[AnalogSignalTransportType]
Web: RTP Redundancy Depth
EMS: Redundancy Depth
[RTPRedundancyDepth]
Web: Enable RTP Redundancy
Negotiation
[EnableRTPRedundancyNegotiation]
Web: RFC 2198 Payload Type
EMS: Redundancy Payload Type
[RFC2198PayloadType]
Version 6.6
‎ 5 1. Configuration Parameters Reference
and/or a Tel Profile.

For more information on Jitter Buffer, see Dynamic Jitter
Buffer Operation on page 161.
Determines the analog signal transport type.

[0] Ignore Analog Signals = (Default) Ignore.

[1] RFC 2833 Analog Signal Relay = Transfer hookflash
using RFC 2833.
Enables the device to generate RFC 2198 redundant
packets. This can be used for packet loss where the missing
information (audio) can be reconstructed at the receiver's
end from the redundant data that arrives in subsequent
packets. This is required, for example, in wireless networks
where a high percentage (up to 50%) of packet loss can be
experienced.

[0] 0 = (Default) Disable.

[1] 1 = Enable - previous voice payload packet is added
to current packet.
Notes:

When enabled, you can configure the payload type,
using the RFC2198PayloadType parameter.

The RTP redundancy dynamic payload type can be
included in the SDP, by using the
EnableRTPRedundancyNegotiation parameter.

This parameter can also be configured in an 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
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.
731
Description
Mediant 800B GW & E-SBC