AudioCodes Mediant 800B MSBR User Manual page 841

Mediant 800B MSBR
Parameter
[UseSIPURIForDiversionH
eader]
[TimeoutBetween100And1
8x]
[EnableImmediateTrying]
[TransparentCoderPresentat
ion]
[IgnoreRemoteSDPMKI]
[TrunkStatusReportingMode
]
Web: Comfort Noise
Generation Negotiation
EMS: Comfort Noise
Generation
CLI: com-noise-gen-nego
[ComfortNoiseNegotiation
]
Version 6.8

[0] = 'tel:' (default)

[1] = 'sip:'
Defines the timeout (in msec) between receiving a 100 Trying
response and a subsequent 18x response. If a 18x response is not
received within this timeout period, the call is disconnected.
The valid range is 0 to 180,000 (i.e., 3 minutes). The default is 32000
(i.e., 32 sec).
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.
Determines the format of the Transparent coder representation in the
SDP.

[0] = clearmode (default)

[1] = X-CCD
Determines whether the device ignores the Master Key Identifier (MKI)
if present in the SDP received from the remote side.

[0] Disable (default)

[1] Enable
Determines whether the device responds to SIP OPTIONS if all the
trunks pertaining to Trunk Group #1 are down.

[0] Disable (default)

[1] Enable = If all the trunks pertaining to Trunk Group #1 are down,
the device does not respond to received SIP OPTIONS.
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
841
67. Configuration Parameters Reference
Description
Mediant 800B MSBR