User`s manual

SIP User's Manual 162 Document #: LTRT-83303
Mediant 1000 & Mediant 600
Parameter Description
1
st
to 5
th
Tx DTMF Option
[TxDTMFOption]
Determines a single or several preferred transmit DTMF negotiation
methods.
 [0] Not Supported = No negotiation - DTMF digits are sent according to
the parameters DTMFTransportType and RFC2833PayloadType
(default).
 [1] INFO (Nortel) = Sends DTMF digits according to IETF <draft-
choudhuri-sip-info-digit-00>.
 [2] NOTIFY = Sends DTMF digits according to <draft-mahy-sipping-
signaled-digits-01>.
 [3] INFO (Cisco) = Sends DTMF digits according to Cisco format.
 [4] RFC 2833.
 [5] INFO (Korea) = Sends DTMF digits according to Korea Telecom
format.
Notes:
 DTMF negotiation methods are prioritized according to the order of their
appearance.
 When out-of-band DTMF transfer is used ([1], [2], [3], or [5]), the
parameter DTMFTransportType is automatically set to 0 (DTMF digits
are erased from the RTP stream).
 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 5 times for
configuring the DTMF transmit methods.
RFC 2833 Payload Type
[RFC2833PayloadType]
The RFC 2833 DTMF relay dynamic payload type.
The valid range is 96 to 99, and 106 to 127. The default is 96. The 100,
102 to 105 range is allocated for proprietary usage.
Notes:
 Certain vendors (e.g., Cisco) use payload type 101 for RFC 2833.
 When RFC 2833 payload type (PT) negotiation is used (the parameter
TxDTMFOption is set to 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.