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V6100 and V7122 User Guide
243
1
Using INFO message according to the Nortel IETF draft:
In this mode DTMF digits are carried to the remote side within INFO messages.
To enable this mode set:
‘RxDTMFOption = 0’
(Protocol Management>Protocol Definition>DTMF & Dialing>Declare RFC 2833 in
SDP = No)
‘TxDTMFOption = 5’
(1
st
to 5
th
DTMF Option = INFO (Nortel))
In this mode DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 (DTMF Mute)).
2
Using INFO message according to Cisco’s style:
In this mode DTMF digits are carried to the remote side within INFO messages.
To enable this mode set:
‘RxDTMFOption = 0’
(Declare RFC 2833 in SDP = No)
‘TxDTMFOption = 3’
(1
st
to 5
th
DTMF Option = INFO (Cisco))
In this mode DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 (DTMF Mute)).
3
Using NOTIFY messages according to <draft-mahy-sipping-signaled-digits-01.txt>:
In this mode DTMF digits are carried to the remote side using NOTIFY messages.
To enable this mode set:
‘RxDTMFOption = 0’
(Declare RFC 2833 in SDP = No)
‘TxDTMFOption = 6’
(1
st
to 5
th
DTMF Option = NOTIFY)
In this mode DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 (DTMF Mute)).
4
Using RFC 2833 relay with Payload type negotiation:
In this mode, DTMF digits are carried to the remote side as part of the RTP stream in
accordance with RFC 2833 standard.
To enable this mode set:
‘TxDTMFOption = 4’
(1
st
to 5
th
DTMF Option = RFC 2833)
‘RxDTMFOption = 3’ (Declare RFC 2833 in SDP = Yes)
To set the RFC 2833 payload type with a different value (other than its default,
96) configure the ‘RFC2833PayloadType’ (RFC 2833 Payload Type) parameter.
The gateway negotiates the RFC 2833 payload type using local and remote SDP
and sends packets using the PT from the received SDP. The gateway expects to
receive RFC 2833 packets with the same PT as configured by the
‘RFC2833PayloadType’ parameter. If the remote side doesn’t include ‘telephony-
event’ in its SDP, the gateway sends DTMF digits in transparent mode (as part
of the voice stream).
Содержание TP-1610
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