AudioCodes E-SBC User Manual

CHAPTER68 Configuration Parameters Reference
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
[TimeoutBetween100And
18x]
The valid range is 0 to 180,000 (i.e., 3 minutes). The default is
32000 (i.e., 32 sec).
configure voip >
sip-definition
settings >
immediate-trying
[EnableImmediateTrying]
Determines if and when the device sends a 100 Trying in
response to an incoming INVITE request.
■ [0] = 100 Trying response is sent upon receipt of a
Proceeding message from the PSTN.
■ [1] = (Default) 100 Trying response is sent immediately upon
receipt of INVITE request.
configure voip >
sip-definition
settings > trans-
coder-present
[TransparentCoderPresen
tation]
Determines the format of the Transparent coder representation in
the SDP.
■ [0] = clearmode (default)
■ [1] = X-CCD
configure voip >
sip-definition
settings > ignore-
remote-sdp-mki
[IgnoreRemoteSDPMKI]
Determines whether the device ignores the Master Key Identifier
(MKI) if present in the SDP received from the remote side.
■ [0] = (Default) Disable
■ [1] = Enable
'Comfort Noise
Generation Negotiation'
configure voip >
media rtp-rtcp >
com-noise-gen-nego
[ComfortNoiseNegotiatio
n]
Enables negotiation and usage of Comfort Noise (CN) for
Gateway calls.
■ [0] Disable
■ [1] Enable (default)
The use of CN is indicated by including a payload type for CN on
the media description line of the SDP. The device can use CN
with a codec whose RTP time stamp clock rate is 8,000 Hz
(G.711/G.726). The static payload type 13 is used. The use of
CN is negotiated between sides. Therefore, if the remote side
doesn't support CN, it is not used. Regardless of the device's
settings, it always attempts to adapt to the remote SIP UA's
request for CNG, as described below.
To determine CNG support, the device uses the
ComfortNoiseNegotiation parameter and the codec’s SCE
(silence suppression setting) using the CodersGroup parameter.
If the ComfortNoiseNegotiation parameter is enabled, then the
following occurs:
■ If the device is the initiator, it sends a “CN” in the SDP only if
the SCE of the codec is enabled. If the remote UA responds
with a “CN” in the SDP, then CNG occurs; otherwise, CNG
does not occur.
■ If the device is the receiver and the remote SIP UA does not
send a “CN” in the SDP, then no CNG occurs. If the remote
side sends a “CN”, the device attempts to be compatible with
the remote side and even if the codec’s SCE is disabled,
CNG occurs.
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AudioCodes E-SBC Specifications

General

Brand	AudioCodes
Model	E-SBC
Category	Gateway
Language	English