AudioCodes 405HD, Administrator'S Manual

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400HD Series IP Phones
Administrator's Manual 80 Document #: LTRT-11973
Parameter Description
voip/dialing/automatic_disconnect
Determines whether the phone automatically
goes idle (i.e. on-hook) when the last remaining
call is disconnected. This is only relevant when
the speaker or headset is used.

0 Disable

1 Enable (default)
5.3.4 Configuring DTMF
Dual-Tone Multi-Frequency (DTMF) signaling can be configured.
 To configure DTMF:
• Use the table as reference.
Table 5-15: DTMF Transport Mode
Parameter Description
voip/media/out_of_band_dtmf DTMF transport mode.

INBAND Inband

RFC2833 RFC 2833 (default)

VIA_SIP Via SIP
voip/media/dtmf_via_sip_force_flag Must be set to 1 to enable Via SIP as DTMF
transport type.
voip/audio/gain/dtmf_rtp_event_signal_level Allows the network administrator to control the
DTMF tones level.

0 db (Minimum)

31
db (Maximum)
Note: If the cfg file parameter 'voip/media/dtmf_via_sip_force_flag' is enabled, a SIP
message is sent in addition to the RTP message. If it is disabled, only one message is
sent, according to the selected DTMF transport type.