AudioCodes Mediant 800B User Manual page 307

User's Manual
Parameter
Web: RTP Redundancy Depth
CLI: rtp-redundancy-depth
[IpProfile_RTPRedundancyDe
pth]
Web: Echo Canceler
CLI: echo-canceller
[IpProfile_EnableEchoCanceller
]
Web: Disconnect on Broken
Connection
CLI: disconnect-on-broken-
connection
[IpProfile_DisconnectOnBrok
enConnection]
Version 6.8

[0] Disable (default)

[1] Enable = Silence Suppression is enabled.

[2] Enable Without Adaptation = A single silence packet is sent
during a silence period (applicable only to G.729).
Notes:

If the coder is G.729, the value of the 'annexb' parameter of the
'fmtp' attribute in the SDP is determined by the following:

This parameter is set to Disable [0]: 'annexb=no'

This parameter is set to Enable [1]: 'annexb=yes'

This parameter is set to Enable Without Adaptation [2] and
IsCiscoSCEMode to [0]: 'annexb=yes'

Enable Without Adaptation is set to Enable Without
Adaptation [2] and IsCiscoSCEMode to [1]: 'annexb=no'

The corresponding global parameter is
EnableSilenceCompression.
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.

The corresponding global parameter is RTPRedundancyDepth.
Enables echo cancellation (i.e., echo from voice calls is removed).

[0] Disable

[1] Line (default)

[2] Acoustic
Notes:

For more information on the Echo Cancellation feature, see
Echo Cancellation on page 158.

The corresponding global parameter is EnableEchoCanceller.
Enables the device to release the call if RTP packets are not
received within a user-defined timeout, configured by the
BrokenConnectionEventTimeout parameter.

[0] No

[1] Yes (default)
Notes:

This feature is applicable only if the RTP session is used without
Silence Compression. If Silence Compression is enabled, the
device doesn't detect a broken RTP connection.

During a call, if the source IP address (from where the RTP
packets are received) is changed without notifying the device,
the device filters these RTP packets. To overcome this, set the
307
19. Coders and Profiles
Description
Mediant 800B Gateway and E-SBC