AudioCodes Mediant 2000 User Manual page 599

User's Manual
Parameter
DTMF Parameters
EMS: Use End of DTMF
[MGCPDTMFDetectionP
oint]
Web: Declare RFC 2833
in SDP
EMS: Rx DTMF Option
[RxDTMFOption]
Tx DTMF Option Table
Web/EMS: Tx DTMF
Option
[TxDTMFOption]
Version 6.6
event flashhook

[4] RFC 2833 = This option is currently not supported.

[5] INFO (Lucent) = Sends proprietary SIP INFO message with
Hook-Flash indication. The device sends the INFO message as
follows:
Content-Type: application/hook-flash
Content-Length: 11
signal=hf

[6] INFO (NetCentrex) = Sends proprietary SIP INFO message
with Hook-Flash indication. The device sends the INFO message
as follows:
Content-Type: application/dtmf-relay
Signal=16
Where 16 is the DTMF code for hook flash.

[7] INFO (HUAWAEI) = Sends a SIP INFO message with Hook-
Flash indication. The device sends the INFO message as follows:
Content-Length: 17
Content-Type: application/sscc
event=flashhook
Note: The device can interwork DTMF HookFlashCode to SIP INFO
messages with Hook Flash indication.
Determines when the detection of DTMF events is notified.

[0] = DTMF event is reported at the end of a detected DTMF digit.

[1] = (Default) DTMF event is reported at the start of a detected
DTMF digit.
Defines the supported receive DTMF negotiation method.

[0] No = Don't declare RFC 2833 telephony-event parameter in
SDP.

[3] Yes = (Default) Declare RFC 2833 telephony-event parameter
in SDP.
The device is always receptive to RFC 2833 DTMF relay packets.
Therefore, it is always correct to include the 'telephony-event'
parameter as default in the SDP. However, some devices use the
absence of the 'telephony-event' in the SDP to decide to send DTMF
digits in-band using G.711 coder. If this is the case, you can set this
parameter to 0.
Note: This parameter can also be configured in an IP Profile.
This table parameter configures up to two preferred transmit DTMF
negotiation methods. The format of this parameter is as follows:
[TxDTMFOption]
FORMAT TxDTMFOption_Index = TxDTMFOption_Type;
[\TxDTMFOption]
Where Type is:

[0] Not Supported = (Default) No negotiation - DTMF digits are
sent according to the parameters DTMFTransportType and
RFC2833PayloadType.

[1] INFO (Nortel) = Sends DTMF digits according to IETF Internet-
599
45. Configuration Parameters Reference
Description
Mediant 2000