Hewlett-Packard Mediant 2000 User's Manual
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Brand: HP
Category: Gateway
Type: Operation & user’s manual for HP Mediant 2000
Pages: 496 (6.06 Mb)
Version 5.8 409 October 2009
SIP User's Manual 9. IP Telephony Capabilities
Sending DTMF digits (in RTP packets) as part of the audio stream (DTMF Relay
is disabled):
• RxDTMFOption = 0 (
This method is typically used with G.711 coders; with other low-bit rate
(LBR) coders, the quality of the DTMF digits is reduced. To enable this mode, define
the following:
ini
• TxDTMFOption = 0 (
file); 'Declare RFC 2833 in SDP' field = 'No'
ini file); '1
st
to 5
th
• DTMFTransportType = 2 (DTMF Transport Type = Transparent DTMF)
Tx DTMF Option' field = 'Disable'
Using INFO message according to Korea mode:
• RxDTMFOption = 0 (
DTMF digits are carried to the
remote side in INFO messages. To enable this mode, define the following:
ini
• TxDTMFOption = 3 (
file); 'Declare RFC 2833 in SDP' field = 'No'
ini file); '1
st
to 5
th
Note that in this mode, DTMF digits are erased from the audio stream
(DTMFTransportType is automatically set to 0 (DTMF Mute)).
Tx DTMF Option' field = 'INFO (Korea)'
Notes:
• The device is always ready to receive DTMF packets over IP in all
possible transport modes: INFO messages, NOTIFY, and RFC 2833 (in
proper payload type) or as part of the audio stream.
• To exclude RFC 2833 Telephony event parameter from the device's
SDP, set RxDTMFOption to 0 in the ini
file.
The following parameters affect the way the device handles the DTMF digits:
TxDTMFOption, RxDTMFOption, and RFC2833PayloadType
MGCPDTMFDetectionPoint, DTMFVolume, DTMFTransportType, DTMFDigitLength,
and DTMFInterDigitInterval (refer to ''
Channel Parameters'' 366 on page )