Configuring Dtmf Transport Types - AudioCodes Mediant 2000 User Manual


SASRegistrationTime = <expiration time that SAS returns in the 200 OK to REGISTER
in Emergency mode> (default 20)

SASDefaultGatewayIP = < SAS gateway IP address>

SASProxySet = 1
9.4

Configuring DTMF Transport Types

You can control the way DTMF digits are transported over the IP network to the remote
endpoint, by using one of the following modes:

Using INFO message according to Nortel IETF draft:
remote side in INFO messages. To enable this mode, define the following:
•
RxDTMFOption = 0 (
•
TxDTMFOption = 1 (
Note that in this mode, DTMF digits are erased from the audio stream
[DTMFTransportType is automatically set to 0 ('DTMF Transport Type' field = 'DTMF
Mute' -- Web interface)].

Using INFO message according to Cisco's mode:
remote side in INFO messages. To enable this mode, define the following:
•
RxDTMFOption = 0 (
•
TxDTMFOption = 3 (
Note that in this mode, DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 ('DTMF Transport Type' field = 'DTMF
Mute' -- Web interface)].

Using NOTIFY messages according to <draft-mahy-sipping-signaled-digits-
01.txt> : DTMF digits are carried to the remote side using NOTIFY messages. To
enable this mode, define the following:
•
RxDTMFOption = 0 (
•
TxDTMFOption = 2 (
Note that in this mode, DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 ('DTMF Transport Type' field = 'DTMF
Mute' -- Web interface)].

Using RFC 2833 relay with Payload type negotiation:
the remote side as part of the RTP stream in accordance with RFC 2833 standard. To
enable this mode, define the following:
•
RxDTMFOption = 3 (
•
TxDTMFOption = 4 (
Note that 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 device negotiates the RFC 2833 payload type using local and remote
SDP and sends packets using the payload type from the received SDP. The device
expects to receive RFC 2833 packets with the same payload type as configured by the
RFC2833PayloadType parameter. If the remote side doesn't include 'telephony-event'
in its SDP, the device sends DTMF digits in transparent mode (as part of the voice
stream).

SIP User's Manual
ini file); 'Declare RFC 2833 in SDP' field = 'No'
st th
ini file); '1 to 5 Tx DTMF Option' field = 'INFO (Nortel)'
ini file); 'Declare RFC 2833 in SDP' field = 'No'
ini file); '1 st to 5 th Tx DTMF Option' field = 'INFO (Cisco)'
ini file); 'Declare RFC 2833 in SDP' field = 'No'
st th
ini file); '1 to 5 Tx DTMF Option' field = 'NOTIFY'
ini file); 'Declare RFC 2833 in SDP' field = 'Yes'
ini file); '1 st to 5 th Tx DTMF Option' field = 'RFC 2833'
408
Mediant 2000
DTMF digits are carried to the
DTMF digits are carried to the
DTMF digits are carried to
Document #: LTRT-68809