User`s manual

MediaPack SIP User’s Manual 8. Telephony Capabilities
Version 4.6 175 June 2005
Table 8-1: Summary of DTMF configuration Parameters (continues on pages 174 to 175)
ini File Field Name
[Web Name]
Valid Range and Description
RxDTMFOption
[Declare RFC 2833 in SDP]
Defines the supported Receive DTMF negotiation method.
No [0] = Don’t declare RFC 2833 Telephony-event parameter in SDP
Yes [3] = Declare RFC 2833 Telephony-event parameter in SDP (default)
The MediaPack is designed to always be receptive to RFC 2833 DTMF relay packets.
Therefore, it is always correct to include the ‘Telephony-event’ parameter as a default in
the SDP. However some gateways use the absence of the ‘telephony-event’ from the
SDP to decide to send DTMF digits inband using G.711 coder, if this is the case you can
set ‘RxDTMFOption=0’.
RFC 2833 Payload Type
[RFC2833PayloadType]
The RFC 2833 DTMF relay dynamic payload type.
Range: 96 to 99, 106 to 127; Default = 96
The 100, 102 to 105 range is allocated for proprietary usage.
Note 1: Cisco is using payload type 101 for RFC 2833.
Note 2: When RFC 2833 payload type (PT) negotiation is used (TxDTMFOption=4), this
payload type is used for the received DTMF packets. If negotiation isn’t used, this
payload type is used for receive and for transmit.
MGCPDTMFDetectionPoin
t
0 = DTMF event is reported on the end of a detected DTMF digit.
1 = DTMF event is reported on the start of a detected DTMF digit (default).
DTMFDigitLength
Time in msec for generating DTMF tones to the PSTN side (if OutOfBandDTMFFormat =
1 or 2).
The default value is 100 msec. The valid range is 0 to 32767.
DTMFInterDigitInterval
Time in msec between generated DTMFs to PSTN side (if OutOfBandDTMFFormat = 1
or 2).
The default value is 100 msec. The valid range is 0 to 32767.
DTMFVolume
[DTMF Volume]
DTMF level for regenerated digits to PSTN side (-31 to 0, corresponding to -31 dBm to 0
dBm in 1 dB steps, default = -11 dBm).
DTMFTransportType
[DTMF Transport Type]
DTMF Mute [0] = Erase digits from voice stream, do not relay to remote.
Transparent DTMF [2] = Digits remain in voice stream.
RFC 2833 Relay DTMF [3] = Erase digits from voice stream, relay to remote according
to RFC 2833.
Note: This parameter is automatically updated if one of the following parameters is
configured: IsDTMFUsed, TxDTMFOption or RxDTMFOption.