3Com VCX v7111 User Manual page 152

ini File Parameter Name
EnableDID
EnableDID_X
NTTDIDSignallingForm
FarEndDisconnectSilenceThreshold Threshold of the packet count (in percents), below which is
T38UseRTPPort
DisableAutoDTMFMute
152
Valid Range and Description
Enables Japan NTT Modem Direct Inward Dialing (DID) support.
FXS gateways can be connected to Japans NTT PBX using
Modem DID lines. These DID lines are used to deliver a called
number to the PBX (applicable to FXS gateways). The DID signal
can be sent alone or combined with an NTT Caller ID signal.
Enables generation of Japan NTT Modem DID signal per port. The
format is: EnableDID_<Port> = <Modem DID>
Modem DID:
0 = Disabled (default).
1 = Enabled.
If not configured, use the global parameter EnableDID.
Applicable only to V7111/FXS gateways.
Determines the type of Direct Inward Dialing (DID) signaling
support for Japan NTT modem: DTMF- or Frequency Shift Keying
(FSK)-based signaling. Gateways can be connected to Japan's
NTT PBX using 'Modem' DID lines. These DID lines are used to
deliver a called number to the PBX.
0 = FSK-based signaling (default).
1 = DTMF-based signaling.
Applicable only to V7111/FXS gateways.
considered silence by the media gateway.
The valid range is 1 to 100. The default is 8%.
Applicable only if silence is detected according to packet
count (FarEndDisconnectSilenceMethod = 1).
Defines that the T.38 packets are sent / received using the same
port as RTP packets.
0 = Use the RTP port +2 to send / receive T.38 packets (default).
1 = Use the same port as the RTP port to send / receive T.38
packets.
Enables / disables the automatic mute of DTMF digits when out-of-
band DTMF transmission is used.
0 = Auto mute is used (default).
1 = No automatic mute of in-band DTMF.
When DisableAutoDTMFMute=1, the DTMF transport type is set
according to the parameter DTMFTransportType and the DTMF
digits are not muted if out-of-band DTMF mode is selected
(TxDTMFOption = 1, 2 or 3). This enables the sending of DTMF
digits in-band (transparent of RFC 2833) in addition to out-of-band
DTMF messages.
Usually this mode is not recommended.
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3Com VCX V7111 VoIP Gateway User Guide