AudioCodes Mediant 1000B User Manual page 793

User's Manual
Parameter
CLI: sdp-ecan-frmt
[SDPEcanFormat]
Web/EMS: First Call
Ringback Tone ID
CLI: 1st-call-rbt-id
[FirstCallRBTId]
Web: Reanswer Time
EMS: Regret Time
CLI: reanswer-time
[RegretTime]
Web: Enable Reanswering
Info
CLI: reans-info-enbl
[EnableReansweringINFO]
Version 6.8
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: This parameter is applicable only to the Gateway application.
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: This 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.
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 this parameter).
The valid range is -1 to 1,000. The default is -1 (i.e., play standard
ringback tone).
Notes:

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 this
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).
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.
Enables the device to send a SIP INFO message with the On-
Hook/Off-Hook parameter when the FXS phone goes on-hook during
an ongoing call and then off-hook again, within the user-defined regret
timeout (configured by the parameter RegretTime). Therefore, the
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51. Configuration Parameters Reference
Description
Mediant 1000B Gateway & SBC