User's Manual 1084 Document #: LTRT-27055
Mediant 1000B Gateway & E-SBC
Parameter Description
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.
If the ComfortNoiseNegotiation parameter is disabled, then the device
does not send “CN” in the SDP. However, if the codec’s SCE is
enabled, then CNG occurs.
Note: The parameter is applicable only to the Gateway application.
configure voip > sip-
definition settings > sdp-
ecan-frmt
[SDPEcanFormat]
Defines the echo canceller format in the outgoing SDP. The 'ecan'
attribute is used in the SDP to indicate the use of echo cancellation.
[0] = (Default) The 'ecan' attribute appears on the 'a=gpmd' line.
[1] = The 'ecan' attribute appears as a separate attribute.
[2] = The 'ecan' attribute is not included in the SDP.
[3] = The 'ecan' attribute and the 'vbd' parameter are not included
in the SDP.
Note: The parameter is applicable only when the IsFaxUsed
parameter is set to 2, and for re-INVITE messages generated by the
device as result of modem or fax tone detection.
First Call Ringback Tone ID
configure voip > sip-
definition settings > 1st-call-
rbt-id
[FirstCallRBTId]
Defines the index of the first ringback tone in the CPT file. This option
enables an Application server to request the device to play a
distinctive ringback tone to the calling party according to the
destination of the call. The tone is played according to the Alert-Info
header received in the 180 Ringing SIP response (the value of the
Alert-Info header is added to the value of the parameter).
The valid range is -1 to 1,000. The default is -1 (i.e., play standard
ringback tone).
Note:
It is assumed that all ringback tones are defined in sequence in the
CPT file.
In case of an MLPP call, the device uses the value of the
parameter plus 1 as the index of the ringback tone in the CPT file
(e.g., if this value is set to 1, then the index is 2, i.e., 1 + 1).
Reanswer Time
configure voip > sip-
definition settings >
reanswer-time
[RegretTime]
Analog: Defines the time interval from when the user hangs up the
phone until the call is disconnected (FXS). This allows the user to
hang up and then pick up the phone (before this timeout) to continue
the call conversation. Thus, it's also referred to as regret time.
Digital: Defines the time period the device waits for an MFC R2
Resume (Reanswer) signal once a Suspend (Clear back) signal is
received from the PBX. If this timer expires, the call is released. Note
that this is applicable only to the MFC-R2 CAS Brazil variant.
The valid range is 0 to 255 (in seconds). The default is 0.
Enable Reanswering Info
configure voip > gateway
For Analog interfaces: Enables the device to send a SIP INFO
message with the On-Hook/Off-Hook parameter when the FXS phone
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