AudioCodes Mediant 800B MSBR User Manual page 329

User's Manual
Parameter
Web: Early Answer Timeout
CLI: early-answer-timeout
[IpProfile_EarlyAnswerTimeout]
SBC
Web: Extension Coders Group ID
CLI: sbc-ext-coders-group-id
[IpProfile_SBCExtensionCodersGroupID
]
Web: Transcoding Mode
CLI: transcoding-mode
[IpProfile_TranscodingMode]
Version 6.8
INVITE. In such a case, you can set the
ProgressIndicator2IP parameter to 1 (PI = 1) for the
device to send a SIP 183 upon receipt of an ISDN Call
Proceeding message.

The corresponding global parameter is
EnableEarly183.
Defines the duration (in seconds) that the device waits for
an ISDN Connect message from the called party (Tel
side), started from when it sends a Setup message. If this
timer expires, the call is answered by sending a SIP 200
OK message (to the IP side).
The valid range is 0 to 2400. The default is 0 (i.e.,
disabled).
Note: The corresponding global parameter is
EarlyAnswerTimeout.
Assigns a Coder Group ID used for Extended (additional)
coders, added to the outgoing leg for this SIP entity. This
is used when transcoding is required between two IP
entities (i.e., the SDP answer from one doesn't include
any coder included in the offer previously sent by the
other). Therefore, to allow IP entities to communicate with
each other regardless of their capabilities, an Extended
coders table with at least one coder that is supported by
each IP entity needs to be assigned to each IP Group.
Therefore, each offer destined to specific IP Groups
includes this coder.
Note: To configure Coders Groups, see Configuring
Coder Groups on page 310.
Defines the voice transcoding mode (media negotiation)
for this SIP entity.

[0] Only if Required = (Default) Transcoding is done
only when necessary. Many of the media settings
(such as gain control) are not implemented on the
voice stream. The device forwards RTP packets
transparently (RTP-to-RTP), without processing them.

[1] Force = Transcoding is always done on the
outgoing leg. The device interworks the media between
for this SIP entity (as both legs have different media
capabilities), by implementing DSP transcoding. This
enables the device to receive capabilities that are not
negotiated between the SIP entities. For example, it
can enforce Gain Control to use voice transcoding
even though both legs have negotiated without the
device's intervention (such as Extension coders).
Notes:

To implement transcoding, you must configure the
number of required DSP channels for transcoding
(using the MediaChannels parameter). Each
transcoding session uses two DSP resources.

The corresponding global parameter is
TranscodingMode.
329
23. Coders and Profiles
Description
Mediant 800B MSBR