SIP User's Manual 358 Document #: LTRT-12801
MP-500 MSBG
Parameter Description
 When RFC 2833 (4) is selected, the device:
1) Negotiates RFC 2833 Payload Type (PT) using local and
remote SDPs.
2) Sends DTMF packets using RFC 2833 PT according to the
PT in the received SDP.
3) Expects to receive RFC 2833 packets with the same PT as
configured by the parameter RFC2833PayloadType.
4) Sends DTMF digits in transparent mode (as part of the
voice stream).
 When TxDTMFOption is set to 0, the RFC 2833 PT is set
according to the parameter RFC2833PayloadType for both
transmit and receive.
 The ini file table parameter TxDTMFOption can be repeated
twice for configuring the DTMF transmit methods.
Web: Tx DTMF Option Table
[TxDTMFOption]
This ini file table parameter determines up to two preferred
transmit DTMF negotiation methods. The format of this
parameter is as follows:
[TxDTMFOption]
FORMAT TxDTMFOption_Index = TxDTMFOption_Type;
[\TxDTMFOption]
For example:
TxDTMFOption 0 = 1;
TxDTMFOption 1 = 3;
Notes:
 This parameter can include up two indices.
 For a description on using ini file table parameters, refer to
''Structure of ini File Table Parameters'' on page 273.
[DisableAutoDTMFMute]
Enables / disables the automatic muting of DTMF digits when
out-of-band DTMF transmission is used.
 [0] = Automatic mute is used (default).
 [1] = No automatic mute of in-band DTMF.
When DisableAutoDTMFMute = 1, the DTMF transport type is
set according to the parameter DTMFTransportType and the
DTMF digits aren't muted if out-of-band DTMF mode is selected
(TxDTMFOption =1, 2 or 3). This enables the sending of DTMF
digits in-band (transparent of RFC 2833) in addition to out-of-
band DTMF messages.
Note: Usually this mode is not recommended.
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