AudioCodes Media Pack MP-124, User Manual

Page: 488 / 584

User's Manual 488 Document #: LTRT-65422
MP-11x & MP-124
Parameter Description
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.
[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: 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.
Web/EMS: First Call
Ringback Tone 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 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).
Web: Reanswer Time
EMS: Regret Time
[RegretTime]
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.
The valid range is 0 to 255 (in seconds). The default is 0.
Web: Enable Reanswering
Info
[EnableReansweringINF
O]
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 device
notifies the far-end that the call has been re-answered.

[0] Disable (default)

[1] Enable
This parameter is typically implemented for incoming IP-to-Tel collect
calls to the FXS port. If the FXS user does not wish to accept the collect
call, the user disconnects the call by on-hooking the phone. The device
notifies the softswitch (or Application server) of the unanswered collect
call (on-hook) by sending a SIP INFO message. As a result, the
softswitch disconnects the call (sends a BYE message to the device). If
the call is a regular incoming call and the FXS user on-hooks the phone
without intending to disconnect the call, the softswitch does not